feat: simplify kbench metrics to focus on key performance indicators #15
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Longhorn 9460 Signed-off-by: Derek Su <[email protected]>
Longhorn 9460 Signed-off-by: Derek Su <[email protected]>
Longhorn 9460 Signed-off-by: Derek Su <[email protected]>
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Longhorn 9460 Signed-off-by: Derek Su <[email protected]>
- bandwidth: set numjobs to 4 - iops: set numjobs to 8 Longhorn 9460 Signed-off-by: Derek Su <[email protected]>
Longhron 9460 Signed-off-by: Derek Su <[email protected]>
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Actionable comments posted: 62
🧹 Outside diff range and nitpick comments (67)
fio/bandwidth-include.fio (1)
1-3: LGTM! Consider future parameterization for flexibility.The added parameters (bs=128K, iodepth=16, numjobs=4) are suitable for a bandwidth test and should provide a good baseline for measuring sequential I/O performance. These values strike a balance between throughput and concurrency.
For future improvements, consider:
- Making these parameters configurable through environment variables or command-line options. This would allow users to adjust the test for different storage systems or specific use cases.
- Adding comments to explain the rationale behind these chosen values, which would help future maintainers understand the decisions made.
- Exploring how these parameters perform across different storage types (e.g., SSDs vs HDDs) and documenting any findings or recommendations.
Example of how this could be implemented with environment variables:
bs=${KBENCH_BANDWIDTH_BS:-128K} iodepth=${KBENCH_BANDWIDTH_IODEPTH:-16} numjobs=${KBENCH_BANDWIDTH_NUMJOBS:-4}This approach would maintain the current values as defaults while allowing for easy customization.
fio/common-include.fio (2)
7-9: Consider the impact of increased test durationWhile the changes to
ramp_timeandruntimeimprove measurement accuracy, they also quadruple the total test duration from 25s to 120s. This could have implications for resource usage, CI/CD pipeline duration, and potentially costs in cloud environments.To mitigate these concerns:
- Consider adding a configuration option to switch between "quick" and "thorough" test modes. This would allow users to choose between faster, less accurate tests and slower, more accurate ones based on their specific needs and constraints.
- Ensure that the documentation is updated to reflect these changes and their implications.
- Monitor the impact on your CI/CD pipeline and adjust as necessary.
Would you like assistance in implementing a configurable test mode or updating the documentation?
Line range hint
1-9: Suggest additional improvements for the FIO configurationTo further enhance the usability and flexibility of this FIO configuration, consider the following improvements:
Add comments to explain the purpose and impact of each parameter. This will improve maintainability and make it easier for others to understand and modify the configuration.
Parameterize some values to allow for easy adjustment without modifying the file directly. This could be done using environment variables or a separate configuration file.
Consider adding additional performance-related parameters like
iodepthornumjobs, which might be relevant for comprehensive performance testing depending on your specific use case.Here's an example of how these improvements could be implemented:
# Ensure all jobs complete before starting the next group stonewall=1 # Don't repeat random generator for each file randrepeat=0 # Skip the verify phase verify=0 # Use the Linux native asynchronous I/O ioengine=libaio # Use non-buffered I/O (O_DIRECT) direct=1 # Run for a specified amount of time vs. amount of data time_based=1 # Time to spend ramping up I/Os before measurement (env var with default) ramp_time=${FIO_RAMP_TIME:-60s} # Total test duration after ramp time (env var with default) runtime=${FIO_RUNTIME:-60s} # Report statistics for groups of jobs group_reporting=1 # Depth of I/O queue (env var with default) iodepth=${FIO_IODEPTH:-32} # Number of jobs to run concurrently (env var with default) numjobs=${FIO_NUMJOBS:-4}This approach allows for more flexibility in testing scenarios while maintaining clarity and ease of use.
Would you like assistance in implementing these improvements or creating a separate configuration file for parameterized values?
metric-exporter/vendor/github.com/matttproud/golang_protobuf_extensions/v2/pbutil/Makefile (1)
1-2: Consider defining the defaultalltargetThe
alltarget is empty. It's common practice to define the default behavior when runningmakewithout arguments.Consider adding dependencies to the
alltarget, for example:-all: +all: coverThis would run the coverage tests by default when executing
make.fio/bandwidth.fio (3)
1-3: LGTM! Consider minor naming adjustment for consistency.The sequential write bandwidth test configuration looks good. It correctly sets the
readwriteparameter towriteand includes the necessary configuration files.For consistency with the section name, consider renaming the section to
[seq-write-bw]to match the abbreviation style used in the read section (assumingbwstands for bandwidth).
6-8: LGTM! Consider minor naming adjustment for consistency.The sequential read bandwidth test configuration looks good. It correctly sets the
readwriteparameter toreadand includes the necessary configuration files.For consistency with the suggested naming for the write section, consider renaming this section to
[seq-read-bw](assumingbwstands for bandwidth).
1-8: Great simplification of bandwidth tests, aligning with PR objectives.The changes to this file effectively simplify the kbench metrics by focusing on key performance indicators:
- Removed random read and write bandwidth tests.
- Retained only sequential read and write bandwidth tests.
- Consistent use of common configuration files (
bandwidth-include.fioandcommon-include.fio).These changes align well with the PR objective of streamlining kbench metrics. The simplified structure makes the configuration easier to understand and maintain.
Consider documenting the rationale behind focusing on sequential tests in the project's README or documentation. This will help future contributors understand the design decisions made in this PR.
metric-exporter/vendor/github.com/cespare/xxhash/v2/testall.sh (2)
4-6: Enhance comments for clarity and completeness.The current comments provide a good overview, but could be improved:
- Specify the exact architectures (amd64, arm64) and tags (purego) being tested.
- Explain why these specific combinations are important to test.
- Clarify the QEMU requirement - is it needed for arm64 emulation on amd64?
Example enhancement:
# This script runs tests for xxhash across multiple architectures (amd64, arm64) # and build tags (default, purego). It ensures cross-platform compatibility and # proper functioning with and without the pure Go implementation. # # Requirements: # - Running on an amd64 system # - QEMU installed for arm64 emulation # - Go toolchain capable of cross-compilation
9-10: Comprehensive test coverage for arm64 architecture with a suggestion.These commands effectively cover testing for the arm64 architecture:
GOARCH=arm64 go test: Runs all tests using the default implementation for arm64.GOARCH=arm64 go test -tags purego: Runs all tests using the pure Go implementation for arm64.This approach ensures cross-architecture compatibility and performance for both implementations. However, there's room for improvement:
Consider explicitly using QEMU if it's required for arm64 emulation. This could be done by prefixing the commands with
qemu-aarch64or by setting up a QEMU-based environment before running these tests. For example:GOARCH=arm64 qemu-aarch64 -L /usr/aarch64-linux-gnu go test GOARCH=arm64 qemu-aarch64 -L /usr/aarch64-linux-gnu go test -tags puregoThis would make the arm64 testing process more explicit and ensure that the QEMU requirement mentioned in the comments is actually utilized in the script.
metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash_asm.go (1)
14-15: LGTM: writeBlocks function is correctly defined. Consider adding a brief comment.The writeBlocks function is correctly declared with the signature
func writeBlocks(d *Digest, b []byte) intand appropriately marked with the//go:noescapedirective for performance optimization in assembly code.Consider adding a brief comment explaining the purpose of this function, similar to the Sum64 function above. For example:
// writeBlocks writes blocks of data to the Digest structure. // //go:noescape func writeBlocks(d *Digest, b []byte) intThis would improve code readability and maintain consistency with the documentation style used for Sum64.
metric-exporter/vendor/github.com/cpuguy83/go-md2man/v2/md2man/md2man.go (1)
7-14: LGTM:Renderfunction is well-implemented, but consider adding error handling.The
Renderfunction is concise and follows the single responsibility principle. It correctly uses theblackfridaylibrary to convert markdown to roff format.However, consider adding error handling to make the function more robust. The
blackfriday.Run()function doesn't return an error, but it's a good practice to handle potential panics that might occur during the conversion process.Here's a suggestion for adding error handling:
- func Render(doc []byte) []byte { + func Render(doc []byte) ([]byte, error) { renderer := NewRoffRenderer() + defer func() { + if r := recover(); r != nil { + return nil, fmt.Errorf("panic during markdown conversion: %v", r) + } + }() - return blackfriday.Run(doc, + result := blackfriday.Run(doc, []blackfriday.Option{blackfriday.WithRenderer(renderer), blackfriday.WithExtensions(renderer.GetExtensions())}...) + return result, nil }This change would require updating the import statement to include the
fmtpackage:import ( "github.com/russross/blackfriday/v2" + "fmt" )metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash_safe.go (3)
8-11: LGTM: Sum64String implementation is correct, but consider performance.The function correctly computes the 64-bit xxHash digest of a string by converting it to a byte slice. This approach is safe for the App Engine environment.
Consider adding a comment about the potential performance impact of converting the string to a byte slice. In performance-critical scenarios, users might want to pre-convert strings to byte slices if they're used frequently.
13-16: LGTM: WriteString method is implemented correctly, but consider performance.The WriteString method correctly adds string data to the Digest by converting it to a byte slice. The comment accurately describes the return values.
Similar to the Sum64String function, consider adding a comment about the potential performance impact of converting the string to a byte slice. In performance-critical scenarios, users might want to pre-convert strings to byte slices if they're writing frequently.
1-16: Overall implementation is correct and safe for App Engine.The file successfully implements safe versions of string-handling functions for the xxhash library in the App Engine environment. Both
Sum64StringandWriteStringuse string to byte slice conversion, ensuring safety at the cost of potential performance overhead.Consider adding a brief comment at the top of the file explaining why these safe implementations are necessary for App Engine and mentioning the potential performance trade-offs. This would provide valuable context for future maintainers and users of the library.
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/get_pid_gopherjs.go (1)
19-23: LGTM with a suggestion: Add a comment explaining the constant return value.The implementation of
getPIDFnis correct for a JavaScript environment where the concept of a process ID might not be applicable. However, it would be beneficial to add a comment explaining why it always returns 1.Consider adding a comment like this:
// getPIDFn returns a function that always returns 1 as the process ID. // This is a simplified implementation for JavaScript environments where // the concept of a process ID might not be applicable. func getPIDFn() func() (int, error) { return func() (int, error) { return 1, nil } }metric-exporter/vendor/github.com/pkg/errors/Makefile (2)
5-6: LGTM: Comprehensive main check target.The
checktarget includes a comprehensive set of code quality checks, which is excellent for maintaining code quality. The order of checks seems logical, starting with tests and ending with more specific checks.Consider adding a
.PHONYdirective for thechecktarget and other non-file-generating targets to ensure they always run, regardless of file presence:.PHONY: check test vet gofmt misspell unconvert staticcheck ineffassign unparam
7-40: Well-defined individual check targets with room for improvement.The individual check targets are well-defined and cover various aspects of code quality, which is commendable. However, there are a few points to consider:
Installing tools on-the-fly might slow down the build process. Consider creating a separate target for tool installation.
The use of
$(GO) getfor installing executables is deprecated. Update these to usego installinstead.Consider the following improvements:
- Create a separate target for tool installation:
install-tools: go install honnef.co/go/tools/cmd/staticcheck@latest go install github.com/client9/misspell/cmd/misspell@latest go install github.com/mdempsky/unconvert@latest go install github.com/gordonklaus/ineffassign@latest go install mvdan.cc/unparam@latest go install github.com/kisielk/errcheck@latest .PHONY: install-tools
- Update the individual targets to use the installed tools without the installation step. For example:
staticcheck: install-tools staticcheck -checks all $(PKGS) misspell: install-tools misspell \ -locale GB \ -error \ *.md *.goThese changes will make the Makefile more efficient and align with current Go practices.
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/internal/go_collector_options.go (3)
18-21: Consider adding documentation forGoCollectorRule.While the struct's purpose can be inferred from its name and fields, it would be beneficial to add documentation comments explaining:
- The purpose of
GoCollectorRule.- The role of the
Matcherfield.- The significance of the
Denyfield.This would improve code readability and make it easier for other developers to understand and use this struct correctly.
23-32: Good structure, consider enhancing documentation.The
GoCollectorOptionsstruct and its associated comment provide valuable information about usage and context. However, there are a few areas for potential improvement:
The comment effectively communicates the intended usage and provides a reference to an issue for more context. This is good practice.
Consider adding individual documentation for each field in the struct, especially for
RuntimeMetricSumForHist, whose purpose is not immediately clear from its name.The
RuntimeMetricRulesfield uses theGoCollectorRuletype. Ensure that the documentation forGoCollectorRule(as suggested in a previous comment) is comprehensive enough to explain how these rules are applied.These enhancements would further improve the code's readability and maintainability.
1-32: Overall, well-structured code with room for documentation improvements.This new file introduces important structures for configuring the Go collector in Prometheus. The use of the
internalpackage and the clear comments about usage restrictions demonstrate good design principles for API control.The
GoCollectorRuleandGoCollectorOptionstypes appear to provide more granular control over Go metrics collection, which aligns with the PR objective of simplifying kbench metrics to focus on key performance indicators.While the code structure is clean and follows Go conventions, enhancing the documentation as suggested in previous comments would further improve the file's quality and maintainability.
The introduction of these new types may have implications for how metrics are collected and filtered in the broader system. Ensure that these changes are reflected in any relevant documentation or user guides for the kbench project.
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/fnv.go (2)
28-42: LGTM: hashAdd and hashAddByte functions are correctly implemented.Both functions accurately implement the FNV-1a hashing algorithm. The function names and comments are clear and follow Go conventions. The implementations are efficient, using inline operations.
Consider a minor optimization for
hashAdd:func hashAdd(h uint64, s string) uint64 { - for i := 0; i < len(s); i++ { - h ^= uint64(s[i]) + for i := range s { + h ^= uint64(s[i]) h *= prime64 } return h }This change uses a range loop, which is slightly more idiomatic in Go and may be marginally more efficient.
1-42: Overall, excellent implementation of FNV-1a hashing.This file provides a well-implemented, efficient, and complete set of functions for FNV-1a hashing. The code is clean, well-commented, and follows Go best practices. It's a valuable addition to the prometheus package.
Consider adding unit tests for these functions to ensure their correctness and to guard against potential future regressions.
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/build_info_collector.go (2)
18-22: Consider enhancing the function documentation.While the deprecation notice is clear, the function documentation could be improved by:
- Briefly explaining the purpose of the
BuildInfoCollector.- Describing what the function returns (a
Collector).- Providing a short example of how to use the recommended alternative.
Here's a suggested improvement:
// NewBuildInfoCollector creates a Collector that exports metrics with Go build information. // It returns a Collector that can be registered with a Prometheus registry. // // Deprecated: Use collectors.NewBuildInfoCollector instead. For example: // // registry.MustRegister(collectors.NewBuildInfoCollector()) // func NewBuildInfoCollector() Collector {
23-38: LGTM with a suggestion for error handling.The implementation correctly retrieves and exports Go build information as a Prometheus metric. It handles cases where build information is not available by using default values.
Consider adding error handling for the
MustNewConstMetriccall. While it's unlikely to fail with constant values, it's generally good practice to handle potential panics, especially in collector initialization. Here's a suggested improvement:func NewBuildInfoCollector() (Collector, error) { path, version, sum := "unknown", "unknown", "unknown" if bi, ok := debug.ReadBuildInfo(); ok { path = bi.Main.Path version = bi.Main.Version sum = bi.Main.Sum } desc := NewDesc( "go_build_info", "Build information about the main Go module.", nil, Labels{"path": path, "version": version, "checksum": sum}, ) metric, err := NewConstMetric(desc, GaugeValue, 1) if err != nil { return nil, err } c := &selfCollector{metric} c.init(c.self) return c, nil }This change would require updating the function signature and any calling code, so it might be best to implement in a future, non-deprecated version.
deploy/fio.yaml (3)
Line range hint
1-15: LGTM! Consider adding a comment about storage class selection.The PersistentVolumeClaim configuration looks good. The
volumeMode: Filesystemis appropriate for most use cases, and the storage request of 33Gi aligns well with the Job's SIZE environment variable.Consider adding a brief comment explaining when to use each storage class option (longhorn vs local-path) to improve configuration clarity for other developers.
28-28: Approve image update, but consider using a specific version tag.The update to
longhornio/kbench:latestaligns with the PR objectives and likely reflects a move to an official repository. This is a good change.However, consider using a specific version tag instead of
latestto ensure consistent and reproducible test results across different environments and runs. For example:image: longhornio/kbench:v1.0.0 # Replace with the actual version
Remove Unused Commented-Out Mode Configurations
The commented-out mode configurations in
deploy/fio.yamlanddeploy/fio-cmp.yamlare not utilized in the current codebase. To maintain a clean and maintainable configuration file, consider removing these unused configurations. If they are intended for future use, please add comments explaining their purpose and when they should be reactivated.
deploy/fio.yamldeploy/fio-cmp.yaml🔗 Analysis chain
Line range hint
31-49: Verify relevance of commented-out configurations.While simplifying the configuration is good, it's worth verifying if all the commented-out mode configurations are still relevant for potential future use or debugging purposes.
If these configurations are no longer needed, consider removing them entirely to keep the file clean and maintainable. If they are still relevant, add a comment explaining their purpose and when they might be used.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check if commented-out modes are used elsewhere in the codebase # Test: Search for usage of commented-out modes modes=("quick" "random-read-iops" "sequential-read-bandwidth" "random-read-latency" "random-write-iops" "sequential-write-bandwidth" "random-write-latency") for mode in "${modes[@]}"; do echo "Searching for mode: $mode" rg --type yaml --type go "$mode" echo "---" doneLength of output: 2985
deploy/fio-cmp.yaml (3)
Line range hint
1-29: LGTM! Consider adding a comment explaining the storage class swap.The changes to the PersistentVolumeClaims look good. Swapping the storage classes between kbench-pvc-1 and kbench-pvc-2 allows for performance comparison between 'local-path' and 'longhorn' storage classes, which aligns with the PR objective of focusing on key performance indicators.
Consider adding a comment explaining the reason for using different storage classes for each PVC. This would improve the file's self-documentation and make the intent clearer for future readers.
43-43: LGTM! Consider using a specific version tag instead of 'latest'.The update to use the official Longhorn repository for the kbench image is a good change. It ensures we're using the correct and up-to-date version of the tool.
However, using the 'latest' tag can potentially lead to inconsistent test results if the image is updated unexpectedly. Consider using a specific version tag for the image to ensure reproducibility of test results. For example:
image: longhornio/kbench:v1.0.0 # Replace with the actual version numberThis way, you have more control over when to update the image version used in tests.
Line range hint
46-66: LGTM! Consider adding a configurable MODE environment variable.The simplification of the environment variables to run all tests by default (full mode) aligns well with the PR objective of simplifying kbench metrics.
To maintain flexibility for different testing scenarios, consider making the MODE configurable through an external environment variable. This way, you can easily switch between full and specific test modes without modifying the YAML file. For example:
env: - name: MODE value: "{{ .Values.testMode | default "full" }}"Then, you can set the MODE when running the job:
kubectl create job --from=cronjob/kbench kbench-test -n <namespace> --overrides '{"spec":{"template":{"spec":{"containers":[{"name":"kbench","env":[{"name":"MODE","value":"random-read-iops"}]}]}}}}'This approach provides both simplicity (default full mode) and flexibility (easy mode switching) when needed.
.github/workflows/build.yml (1)
34-71: LGTM: Comprehensive setup for building and pushing Docker images.The 'build_push_image' job is well-structured:
- Proper job dependency and conditional execution
- Multi-platform support with QEMU and Docker Buildx
- Secure Docker Hub authentication using secrets
One minor suggestion:
Consider adding a step to verify the downloaded binaries before proceeding with the image build. This can help catch any issues with the artifact download process. For example:
- name: Verify binaries run: | ls -l ./bin/ file ./bin/* | grep -i executableThis step would list the contents of the bin directory and verify that the files are indeed executables.
metric-exporter/vendor/github.com/cespare/xxhash/v2/README.md (4)
1-30: LGTM! Consider adding a performance comparison.The introduction and API section are well-written and informative. The badges and code examples provide valuable information for users.
Consider adding a brief statement comparing xxHash's performance to Go's standard library hashing functions in the introduction. This would immediately highlight the package's key advantage.
🧰 Tools
🪛 Markdownlint
12-12: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
21-21: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
33-43: LGTM! Consider adding a comma for clarity.The compatibility section provides clear and crucial information for users.
Consider adding a comma after "Compatibility" on line 35 to improve readability:
-## Compatibility +## Compatibility, This package is in a module and the latest code is in version 2 of the module.🧰 Tools
🪛 LanguageTool
[uncategorized] ~35-~35: Possible missing comma found.
Context: ... ## Compatibility This package is in a module and the latest code is in version 2 of ...(AI_HYDRA_LEO_MISSING_COMMA)
45-64: LGTM! Consider adding language specifiers to code blocks.The benchmarks section provides valuable performance data and transparency in how the results were obtained.
Add language specifiers to the fenced code blocks to improve syntax highlighting:
-``` +```bash benchstat <(go test -tags purego -benchtime 500ms -count 15 -bench 'Sum64$') benchstat <(go test -benchtime 500ms -count 15 -bench 'Sum64$')<details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary><blockquote> 61-61: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </blockquote></details> </details> --- `66-72`: **LGTM! Consider using asterisks for list items.** The "Projects using this package" section adds credibility by showcasing real-world usage. For consistency with Markdown style guidelines, consider using asterisks instead of dashes for the unordered list: ```diff -## Projects using this package +## Projects using this package -- [InfluxDB](https://github.com/influxdata/influxdb) -- [Prometheus](https://github.com/prometheus/prometheus) -- [VictoriaMetrics](https://github.com/VictoriaMetrics/VictoriaMetrics) -- [FreeCache](https://github.com/coocood/freecache) -- [FastCache](https://github.com/VictoriaMetrics/fastcache) +* [InfluxDB](https://github.com/influxdata/influxdb) +* [Prometheus](https://github.com/prometheus/prometheus) +* [VictoriaMetrics](https://github.com/VictoriaMetrics/VictoriaMetrics) +* [FreeCache](https://github.com/coocood/freecache) +* [FastCache](https://github.com/VictoriaMetrics/fastcache)🧰 Tools
🪛 Markdownlint
68-68: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
69-69: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
70-70: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
71-71: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
72-72: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
metric-exporter/vendor/github.com/pkg/errors/README.md (2)
7-23: Minor stylistic improvement suggested.The explanation of error handling context is clear and well-illustrated with code examples. However, there's a minor stylistic improvement that can be made.
Consider adding a comma after "For example" on line 17:
-The errors.Wrap function returns a new error that adds context to the original error. For example +The errors.Wrap function returns a new error that adds context to the original error. For example,This change improves readability and adheres to common English punctuation rules.
Overall, this section effectively introduces the package's approach to error handling and demonstrates its usage.
🧰 Tools
🪛 LanguageTool
[typographical] ~17-~17: After the expression ‘for example’ a comma is usually used.
Context: ...adds context to the original error. For example ```go _, err := ioutil.ReadAll(r) if er...(COMMA_FOR_EXAMPLE)
44-49: Consider enhancing the roadmap section.The roadmap section provides valuable information about the package's future plans. However, it could be improved in the following ways:
- Consider adding more specific timelines for the 0.9 and 1.0 releases, if possible.
- The formatting of version numbers could be more consistent.
Suggest applying the following changes:
-With the upcoming [Go2 error proposals](https://go.googlesource.com/proposal/+/master/design/go2draft.md) this package is moving into maintenance mode. The roadmap for a 1.0 release is as follows: +With the upcoming [Go 2 error proposals](https://go.googlesource.com/proposal/+/master/design/go2draft.md), this package is moving into maintenance mode. The roadmap for a 1.0 release is as follows: -- 0.9. Remove pre Go 1.9 and Go 1.10 support, address outstanding pull requests (if possible) -- 1.0. Final release. +- v0.9: Remove pre-Go 1.9 and Go 1.10 support, address outstanding pull requests (if possible) +- v1.0: Final releaseThese changes improve consistency and clarity in the roadmap section.
🧰 Tools
🪛 LanguageTool
[uncategorized] ~48-~48: Prefixes followed by proper nouns or dates are typically hyphenated.
Context: ...0 release is as follows: - 0.9. Remove pre Go 1.9 and Go 1.10 support, address outsta...(PRE_PRO_ANTI)
fio/run.sh (3)
53-97: LGTM: Enhanced MODE handling with more specific test optionsThe changes to the MODE handling significantly improve the flexibility and granularity of the benchmarking process. The new modes allow for specific read/write and random/sequential tests, which is a valuable addition.
Consider adding a brief comment above the case statement explaining the purpose of each mode for better documentation. For example:
# Mode selection for different benchmark scenarios: # - quick: Run a quick benchmark for all tests # - random-read-iops: Benchmark random read IOPS # - sequential-read-bandwidth: Benchmark sequential read bandwidth # ... (add descriptions for other modes) case $MODE in ...
124-130: LGTM: Enhanced IOPS benchmarking with separate read and write testsThe changes to the IOPS benchmarking process are excellent. Separating random read and random write IOPS tests provides more detailed and specific results, allowing for more granular analysis. The use of sections in the fio command provides better control over the benchmarking process.
Consider adding a brief pause between the read and write tests to ensure any caching or system effects from the read test don't impact the write test results. For example:
echo Benchmarking random read iops fio $CURRENT_DIR/$IOPS_FIO $IDLE_PROF --section=rand-read-iops --filename=$TEST_FILE --size=$TEST_SIZE --output-format=json --output=$OUTPUT_READ_IOPS $rate_iops_flag $rate_flag sleep 5 # Add a short pause between tests echo Benchmarking random write iops fio $CURRENT_DIR/$IOPS_FIO $IDLE_PROF --section=rand-write-iops --filename=$TEST_FILE --size=$TEST_SIZE --output-format=json --output=$OUTPUT_WRITE_IOPS $rate_iops_flag $rate_flag
134-150: LGTM: Enhanced bandwidth and latency benchmarking with separate read and write testsThe changes to the bandwidth and latency benchmarking processes are excellent. Separating read and write tests for both sequential bandwidth and random latency provides more detailed and specific results, allowing for more granular analysis. The use of sections in the fio command provides better control over the benchmarking process, and the structure is consistent with the IOPS benchmarking changes.
Similar to the IOPS benchmarking suggestion, consider adding brief pauses between the read and write tests for both bandwidth and latency benchmarking. This can help ensure that any caching or system effects from one test don't impact the results of the subsequent test. For example:
echo Benchmarking sequential read bandwidth fio $CURRENT_DIR/$BW_FIO $IDLE_PROF --section=seq-read-bandwidth --filename=$TEST_FILE --size=$TEST_SIZE --output-format=json --output=$OUTPUT_READ_BW $rate_iops_flag $rate_flag sleep 5 # Add a short pause between tests echo Benchmarking sequential write bandwidth fio $CURRENT_DIR/$BW_FIO $IDLE_PROF --section=seq-write-bandwidth --filename=$TEST_FILE --size=$TEST_SIZE --output-format=json --output=$OUTPUT_WRITE_BW $rate_iops_flag $rate_flag sleep 5 # Add a short pause between tests echo Benchmarking random read latency fio $CURRENT_DIR/$LAT_FIO $IDLE_PROF --section=rand-read-lat --filename=$TEST_FILE --size=$TEST_SIZE --output-format=json --output=$OUTPUT_READ_LAT $rate_iops_flag $rate_flag sleep 5 # Add a short pause between tests echo Benchmarking random write latency fio $CURRENT_DIR/$LAT_FIO $IDLE_PROF --section=rand-write-lat --filename=$TEST_FILE --size=$TEST_SIZE --output-format=json --output=$OUTPUT_WRITE_LAT $rate_iops_flag $rate_flagfio/parse.sh (1)
Issue Detected:
RAND_READ_BWandRAND_WRITE_BWVariables UndefinedThe variables
RAND_READ_BWandRAND_WRITE_BWare not defined in the codebase. Applying the suggested changes will lead to the use of undefined variables in the CPU idleness profiling section.
- File Affected:
fio/parse.sh(Lines 69-82)- Sourced Files:
fio/func.sh,fio/cmp_parse.sh,fio/cmp_run.shPlease define
RAND_READ_BWandRAND_WRITE_BWor adjust the labeling to use existing bandwidth metrics consistently.🔗 Analysis chain
Line range hint
79-83: Inconsistent use of 'Sequential' bandwidth in CPU idleness profiling sectionIn the summary output under CPU idleness profiling, the bandwidth section is labeled as "Sequential" and uses
$SEQ_READ_BWand$SEQ_WRITE_BW, whereas the IOPS and Latency sections are labeled as "Random" and use random metrics. To maintain consistency and focus on key performance indicators, consider using "Random" bandwidth metrics and the corresponding variables.Ensure that
$RAND_READ_BWand$RAND_WRITE_BWare properly defined and calculated before using them in the summary.Run the following script to verify if these variables are defined in the codebase:
If the variables are defined, apply this diff to correct the labels and variables:
- printf -v cxt "Bandwidth in KiB/sec (Read/Write)\n$FMT$FMT\n"\ - "Sequential:" \ - "$(commaize $SEQ_READ_BW) / $(commaize $SEQ_WRITE_BW)" \ - "CPU Idleness:" \ - "$CPU_IDLE_PCT_BW%" + printf -v cxt "Bandwidth in KiB/sec (Read/Write)\n$FMT$FMT\n"\ + "Random:" \ + "$(commaize $RAND_READ_BW) / $(commaize $RAND_WRITE_BW)" \ + "CPU Idleness:" \ + "$CPU_IDLE_PCT_BW%"🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify if RAND_READ_BW and RAND_WRITE_BW variables are defined. # Test: Search for declarations of RAND_READ_BW and RAND_WRITE_BW. Expect: Variables should be defined. rg --type sh --no-heading --line-number 'RAND_READ_BW=' rg --type sh --no-heading --line-number 'RAND_WRITE_BW='Length of output: 112
Script:
#!/bin/bash # Description: Search for variables related to RANDOM bandwidth and check sourced files for variable definitions. # Search for any variables containing 'RAND' and 'BW' rg --type sh '\bRAND.*BW\b' # Search for sourced files that might define these variables rg --type sh '^source\s+' || trueLength of output: 186
Script:
#!/bin/bash # Description: Verify if RAND_READ_BW and RAND_WRITE_BW variables are defined in func.sh. # Search for declarations of RAND_READ_BW and RAND_WRITE_BW in func.sh rg --type sh --line-number 'RAND_READ_BW=' fio/func.sh rg --type sh --line-number 'RAND_WRITE_BW=' fio/func.shLength of output: 110
metric-exporter/vendor/github.com/matttproud/golang_protobuf_extensions/v2/pbutil/decode.go (3)
25-25: Address the TODO: Prefix error variable with package nameThere's a TODO comment indicating that the
errInvalidVarintvariable should include the package name prefix in the next minor release. This enhances clarity and prevents potential naming collisions.Would you like assistance in updating the error variable to include the package prefix?
40-41: Address the TODO: Allow caller to specify a decode bufferThe TODO suggests considering allowing the caller to specify a decode buffer in the next major version. Implementing this feature could improve performance by reducing allocations during decoding.
Would you like assistance in designing and implementing this enhancement?
43-44: Address the TODO: Use error wrapping for enhanced error contextThe TODO notes considering the use of error wrapping to annotate error states in pass-through cases. Utilizing error wrapping (e.g., using
fmt.Errorfwith the%wverb) can provide better context when errors are propagated.Would you like assistance in updating the error handling to incorporate error wrapping?
metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash_arm64.s (1)
28-43: Add comments to macros for improved maintainabilityThe macros
round,round0, andmergeRoundbetween lines 28-43 are critical to the functionality of the hashing algorithm but may not be immediately clear to readers. Adding brief comments explaining the purpose and operation of each macro will enhance readability and make future maintenance easier.metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/go_collector_go116.go (1)
25-36: Ensure proper documentation of struct fieldsThe
goCollectorstruct contains fields with abbreviations (e.g.,msLast,msMtx) which might not be immediately clear to readers.Consider renaming the fields or adding comments to improve clarity:
type goCollector struct { base baseGoCollector // Memory statistics related fields. msLast *runtime.MemStats // Previously collected memory statistics. msLastTimestamp time.Time msMtx sync.Mutex // Protects msLast and msLastTimestamp. msMetrics memStatsMetrics msRead func(*runtime.MemStats) // For mocking in tests. msMaxWait time.Duration // Maximum wait time for fresh memstats. msMaxAge time.Duration // Maximum allowed age of cached memstats. }metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash_amd64.s (2)
1-4: Consolidate build constraints to use the//go:buildformatThe file currently includes both the new
//go:builddirective and the old// +buildtags. Since Go 1.17, the//go:builddirective is preferred and the old// +buildsyntax is considered deprecated. If backward compatibility with Go versions prior to 1.17 is not required, you can remove the// +buildlines to simplify the build constraints.
61-174: Consider the maintainability impact of using assembly codeThe use of assembly code in the
Sum64function can provide performance benefits but may introduce complexity and increase the maintenance burden. Assembly code is harder to read, debug, and maintain compared to high-level Go code. Additionally, it may limit portability to non-AMD64 architectures. Evaluate whether the performance gains are significant for your use case and consider providing a pure Go fallback or using an optimized Go implementation for better maintainability.metric-exporter/vendor/github.com/pkg/errors/stack.go (4)
1-177: Consider using Go's standard error handling instead of vendoringpkg/errorsSince Go 1.13, the standard library provides error wrapping and unwrapping functionalities via the built-in
errorsandfmtpackages, including error formatting with stack traces using%wand%+v. Refactoring to use these standard library features could reduce external dependencies and align the project with current Go best practices.
171-177: Add comments to explain the logic infuncnamefunctionThe
funcnamefunction performs string manipulations to extract the function name from its full path. Adding explanatory comments would enhance readability and help future maintainers understand the intent and edge case handling.
142-153: Consider handling additional formatting verbs instack.FormatmethodThe
Formatmethod forstackcurrently handles the'v'verb with the'+'flag but does not produce output for other verbs or flags. For improved usability, consider implementing default behavior or handling other cases, or documenting the limitations if this behavior is intentional.
164-168: Make stack depth configurable incallersfunctionThe
callersfunction captures up to 32 frames of the call stack. To increase flexibility, especially in scenarios requiring deeper stack traces, consider making the depth configurable.fio/cmp_parse.sh (2)
Line range hint
101-112: Typographical Error in the Summary OutputThere's a spelling mistake in the summary header. "Comparsion" should be corrected to "Comparison" to maintain professionalism and clarity.
Apply this diff to fix the typo:
-=============================== -FIO Benchmark Comparsion Summary +=============================== +FIO Benchmark Comparison Summary
Missing Backslashes in
printfStatementsSeveral
printfstatements infio/cmp_parse.share missing backslashes at the end of lines, which can lead to syntax errors during script execution:
- Lines with
printf -v headerand associated continuations.- Lines with
printf -v cxtin both branches of the conditional.Please add backslashes (
\) at the end of each continued line in theseprintfstatements to ensure proper syntax.🔗 Analysis chain
Line range hint
101-112: Verify Formatting inprintfStatementsEnsure that all
printfstatements have the correct syntax, specifically the placement of backslashes for line continuation. Missing backslashes could lead to syntax errors during script execution.Run the following script to check for missing backslashes at the end of
printflines:This script uses
rg(ripgrep) with PCRE2 to match multilineprintfstatements that might be missing backslashes.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify that all printf statements have proper line continuations. # Search for printf statements where lines do not end with a backslash but are continued. rg --type sh --no-heading --no-line-number --multiline \ --pcre2 '(printf\s.*)(\n(?!\s*\\).+)*\n(?!\s*\\)' fio/cmp_parse.sh # Expected Result: No matches, indicating all printf statements are correctly formatted.Length of output: 2443
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/internal/go_runtime_metrics.go (2)
69-69: Validate metric name composition for Prometheus compatibility.The validity check for the metric name uses
model.IsValidMetricName, but the concatenation ofnamespace,subsystem, andnamemay result in invalid metric names if parts contain leading or trailing underscores.Consider trimming any leading or trailing underscores to ensure the metric name is valid:
-valid := model.IsValidMetricName(model.LabelValue(namespace + "_" + subsystem + "_" + name)) +fullMetricName := namespace + "_" + subsystem + "_" + name +fullMetricName = strings.Trim(fullMetricName, "_") +valid := model.IsValidMetricName(model.LabelValue(fullMetricName))
85-103: Handle additional units inRuntimeMetricsBucketsForUnit.The function currently handles "bytes" and "seconds" units explicitly. Other units default to returning the original buckets. Consider whether additional units should be handled for re-bucketing to improve consistency.
If other units are expected, you might want to extend the switch-case to handle them appropriately or document why other units are not re-bucketed.
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/labels.go (5)
25-33: Clarify Usage ofLabelsTypeThe
Labelstype is defined asmap[string]string. While this is common in Prometheus client libraries, consider adding examples or additional comments to illustrate its usage, improving readability for those less familiar with the pattern.
35-36: DocumentLabelConstraintFunction TypeThe
LabelConstrainttype is defined but lacks detailed documentation on how it's intended to be used. Adding usage examples or elaborating on its purpose can enhance understanding for future maintainers.
38-44: Consistency in Struct Field CommentsIn the
ConstrainedLabelstruct, the field comments could be improved for clarity. Currently, only theConstraintfield has a comment. Consider adding a comment for theNamefield as well to maintain consistency.Apply this diff to add the missing comment:
type ConstrainedLabel struct { + // Name of the label. Name string // Constraint function to normalize the label value. Constraint LabelConstraint }
46-59: Interface Method DocumentationIn the
ConstrainableLabelsinterface, the methodscompile()andlabelNames()lack method-level comments. Providing documentation for these methods will enhance code clarity and maintainability.Apply this diff to add method documentation:
type ConstrainableLabels interface { + // compile compiles the label constraints for use at runtime. compile() *compiledLabels + // labelNames returns a slice of label names. labelNames() []string }
90-101: Typo in Comment forUnconstrainedLabelsThere is a minor typo in the comment for
UnconstrainedLabels: "collection of label without any constraint" should be "collection of labels without any constraints".Apply this diff to fix the typo:
// UnconstrainedLabels represents collection of labels without any constraints on // their value. Thus, it is simply a collection of label names.metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash.go (1)
1-228: Consider avoiding committing vendored dependencies to the repositoryIncluding vendored dependencies in the repository under the
vendor/directory can increase the repository size and complicate dependency management. It's generally recommended to use Go Modules to manage dependencies without committing them to the repository. If vendoring is necessary for your project, ensure that it aligns with your team's standards and project requirements.metric-exporter/vendor/github.com/beorn7/perks/quantile/stream.go (1)
14-14: Update outdated URLs in commentsThe URLs
http://www.cs.rutgers.edu/~muthu/bquant.pdfin comments at lines 14, 47, and 64 appear to be outdated. This may hinder readers who wish to reference the paper for more detailed information about the algorithm.Consider updating the URLs to a current and accessible link, such as:
https://www.cs.rutgers.edu/~muthu/bquant.pdfOr the ACM Digital Library link:
https://dl.acm.org/doi/10.1145/375663.375670Also applies to: 47-47, 64-64
metric-exporter/vendor/github.com/cpuguy83/go-md2man/v2/md2man/roff.go (1)
1-336: Consider managing dependencies using Go modules instead of vendoring codeThe entire
roff.gofile is added under thevendor/directory, indicating that the code is being manually vendored into the project. While vendoring was common in earlier Go versions, Go modules now provide a more efficient and manageable way to handle dependencies.Using Go modules offers several benefits:
- Simplifies Dependency Management: Go modules handle dependency versions and conflicts more gracefully.
- Reduces Repository Size: Avoids adding external code directly into your repository.
- Improves Maintainability: Makes it easier to update dependencies and manage versions.
Consider removing the vendored code and managing this dependency via Go modules to streamline your project.
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/counter.go (1)
146-149: Clarify Nil Check inAddWithExemplarMethodIn
AddWithExemplar, when exemplar labelsearenil, the exemplar update is skipped:func (c *counter) AddWithExemplar(v float64, e Labels) { c.Add(v) c.updateExemplar(v, e) }func (c *counter) updateExemplar(v float64, l Labels) { if l == nil { return } // ... }Silently ignoring a
nillabels map might lead to confusion. Consider treating anillabels map as an empty map{}, or document this behavior to ensure users are aware that passingnilwill not update the exemplar.metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/internal/difflib.go (1)
492-508: Optimize theQuickRatiomethod by avoiding redundant lookupsIn the
QuickRatiomethod, the availability mapavailcould be optimized to reduce redundant lookups and assignments.Refactor the code for efficiency:
avail := map[string]int{} matches := 0 for _, s := range m.a { - n, ok := avail[s] - if !ok { - n = m.fullBCount[s] - } + n := avail[s] avail[s] = n - 1 if n > 0 { matches++ } }metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/histogram.go (1)
915-915: Correct typo in comment: 'interefere' should be 'interfere'.There's a typographical error in the comment.
Apply this diff:
- h.resetScheduled || // Do not interefere if a reset is already scheduled. + h.resetScheduled || // Do not interfere if a reset is already scheduled.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
⛔ Files ignored due to path filters (1)
metric-exporter/vendor/github.com/prometheus/client_model/go/metrics.pb.gois excluded by!**/*.pb.go
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- .github/workflows/build.yml (1 hunks)
- Dockerfile.dapper (1 hunks)
- README.md (2 hunks)
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- deploy/fio.yaml (1 hunks)
- fio/bandwidth-include.fio (1 hunks)
- fio/bandwidth-quick.fio (1 hunks)
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💤 Files with no reviewable changes (5)
- fio/bw-include.fio
- fio/iops-quick.fio
- fio/iops.fio
- fio/latency-quick.fio
- fio/latency.fio
✅ Files skipped from review due to trivial changes (19)
- metric-exporter/go.mod
- metric-exporter/main.go
- metric-exporter/metrics/metrics.go
- metric-exporter/vendor/github.com/beorn7/perks/LICENSE
- metric-exporter/vendor/github.com/cespare/xxhash/v2/LICENSE.txt
- metric-exporter/vendor/github.com/cpuguy83/go-md2man/v2/LICENSE.md
- metric-exporter/vendor/github.com/matttproud/golang_protobuf_extensions/v2/LICENSE
- metric-exporter/vendor/github.com/matttproud/golang_protobuf_extensions/v2/NOTICE
- metric-exporter/vendor/github.com/matttproud/golang_protobuf_extensions/v2/pbutil/.gitignore
- metric-exporter/vendor/github.com/matttproud/golang_protobuf_extensions/v2/pbutil/doc.go
- metric-exporter/vendor/github.com/pkg/errors/.gitignore
- metric-exporter/vendor/github.com/pkg/errors/.travis.yml
- metric-exporter/vendor/github.com/pkg/errors/LICENSE
- metric-exporter/vendor/github.com/pkg/errors/appveyor.yml
- metric-exporter/vendor/github.com/prometheus/client_golang/LICENSE
- metric-exporter/vendor/github.com/prometheus/client_golang/NOTICE
- metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/.gitignore
- metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/README.md
- metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/doc.go
🧰 Additional context used
🪛 Markdownlint
README.md
109-109: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
113-113: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
124-124: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
154-154: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
158-158: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
metric-exporter/vendor/github.com/cespare/xxhash/v2/README.md
68-68: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
69-69: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
70-70: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
71-71: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
72-72: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
12-12: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
21-21: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
61-61: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
🪛 Shellcheck
fio/func.sh
[warning] 5-5: RAND_READ_IOPS appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 11-11: RAND_WRITE_IOPS appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 12-12: CPU_IDLE_PCT_IOPS appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 17-17: SEQ_READ_BW appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 23-23: SEQ_WRITE_BW appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 24-24: CPU_IDLE_PCT_BW appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 29-29: RAND_READ_LAT appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 35-35: RAND_WRITE_LAT appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 36-36: CPU_IDLE_PCT_LAT appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 48-48: CMP_RAND_READ_IOPS appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 51-51: CMP_RAND_WRITE_IOPS appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 53-53: CMP_CPU_IDLE_PCT_IOPS appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 58-58: CMP_SEQ_READ_BW appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 61-61: CMP_SEQ_WRITE_BW appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 63-63: CMP_CPU_IDLE_PCT_BW appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 68-68: CMP_RAND_READ_LAT appears unused. Verify use (or export if used externally).
(SC2034)
🪛 LanguageTool
metric-exporter/vendor/github.com/beorn7/perks/quantile/exampledata.txt
[uncategorized] ~552-~552: Le mois « 9 » n’a que 30 jours.
Context: ...2 2 4 3 3 2 5 4 3 5 7 7 4 5 8 5 4 749 2 31 9 11 2 11 5 4 4 7 9 11 4 5 4 7 3 4 6 2 ...(DATE)
metric-exporter/vendor/github.com/cespare/xxhash/v2/README.md
[uncategorized] ~35-~35: Possible missing comma found.
Context: ... ## Compatibility This package is in a module and the latest code is in version 2 of ...(AI_HYDRA_LEO_MISSING_COMMA)
metric-exporter/vendor/github.com/pkg/errors/README.md
[style] ~1-~1: Using many exclamation marks might seem excessive (in this case: 4 exclamation marks for a text that’s 2207 characters long)
Context: # errors
[
[grammar] ~3-~3: It seems that the correct verb form here is “provide”.
Context: ...b.com/pkg/errors?badge) Package errors provides simple error handling primitives. `go ...(AGREEMENT_SENT_START_2)
[typographical] ~17-~17: After the expression ‘for example’ a comma is usually used.
Context: ...adds context to the original error. For example ```go _, err := ioutil.ReadAll(r) if er...(COMMA_FOR_EXAMPLE)
[uncategorized] ~48-~48: Prefixes followed by proper nouns or dates are typically hyphenated.
Context: ...0 release is as follows: - 0.9. Remove pre Go 1.9 and Go 1.10 support, address outsta...(PRE_PRO_ANTI)
🔇 Additional comments (133)
fio/iops-include.fio (4)
1-4: Review overall benchmark configurationThe changes to this FIO configuration file will significantly alter the benchmark results. The increased
iodepth, addition ofnumjobs, and use ofnorandommapwill likely show higher IOPS, but may not reflect real-world scenarios for all users.Consider the following suggestions:
- Document these changes clearly in your benchmark results and README.
- Provide options for users to easily adjust these parameters to match their specific use cases.
- Consider running and reporting results for multiple configurations (e.g., with and without
norandommap, differentnumjobsvalues) to give a more comprehensive view of performance.- Ensure that these changes align with the goals stated in the PR objectives to "simplify kbench metrics to focus on key performance indicators".
Let's check if there are any comments or documentation in this file or related files:
#!/bin/bash # Check for comments in this file and related FIO files rg --type ini '^#' fio/If there are no comments explaining these parameters and their implications, consider adding them to improve maintainability and user understanding.
4-4: Understand the implications of setting norandommapAdding
norandommap=1disables the use of a random map for random I/O patterns. This can improve performance, especially for large files, but it may not provide a truly random I/O pattern.Let's check if this parameter is used in other FIO files:
#!/bin/bash # Search for norandommap in other FIO configuration files rg --type ini 'norandommap=' fio/Consider documenting this change and its implications in your README or benchmark documentation. Users should be aware that the I/O pattern may not be truly random when interpreting the results.
3-3: Evaluate the impact of adding numjobsThe addition of
numjobs=8will create 8 clones (processes/threads) of this job. This can significantly increase the overall IOPS, but it will also increase the system load.Let's check if this parameter is used consistently:
Ensure that your test environment can handle this increased load. You may want to consider making this value configurable or scaling it based on the available system resources.
✅ Verification successful
Verification of
numjobs=8AdditionNo other instances of
numjobsfound in FIO configuration files.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for numjobs in other FIO configuration files rg --type ini 'numjobs=' fio/Length of output: 61
Script:
#!/bin/bash # Search for numjobs in FIO configuration files with .fio extension rg 'numjobs=' fio/**/*.fioLength of output: 81
2-2: Consider the trade-offs of increasing iodepthThe
iodepthhas been increased from 64 to 128. This change will allow more I/O operations to be queued, potentially increasing throughput. However, it may also lead to increased latency.To understand the impact, let's check if this change is consistent across other FIO configuration files:
Consider running benchmarks with both the old and new
iodepthvalues to quantify the performance impact.✅ Verification successful
Revising
ioreadpthParameter SearchThe previous search for
iodepth=failed due to an unrecognized file typeini. FIO configuration files typically use the.fioextension.
iodepth=128infio/iops-include.fiois appropriate for IOPS benchmarkingThe
iodepthvalue has been increased to 128 to allow a higher number of I/O operations in flight, which is suitable for IOPS-intensive testing. This change is consistent with the differingiodepthvalues in other FIO configuration files, such asbandwidth-include.fio(iodepth=16) andlat-include.fio(iodepth=1), each tailored to their specific benchmarking objectives.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for iodepth in other FIO configuration files rg --type ini 'iodepth=' fio/Length of output: 57
Script:
#!/bin/bash # Search for iodepth in FIO configuration files with .fio extension rg 'iodepth=' --glob '*.fio' fio/Length of output: 133
fio/bandwidth-sequential-write.fio (2)
1-3: Approve changes and verify included file renameThe changes to the section header and included file name improve clarity and consistency. The new names are more descriptive and align well with the file's purpose.
Please ensure that the
bandwidth-include.fiofile exists and has been renamed frombw-include.fio. Run the following script to verify:✅ Verification successful
File Rename Verified Successfully
The include file has been successfully renamed from
bw-include.fiotobandwidth-include.fioas verified by the provided script. All changes are consistent and correctly implemented.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Verify the existence of the new include file and the absence of the old one if [ -f "fio/bandwidth-include.fio" ] && [ ! -f "fio/bw-include.fio" ]; then echo "File rename verified: bandwidth-include.fio exists and bw-include.fio does not." else echo "Warning: File rename may not have been completed. Please check fio/bandwidth-include.fio and fio/bw-include.fio" fiLength of output: 243
Line range hint
1-5: Verify consistency of naming changes across the projectThese changes appear to be part of a larger effort to improve naming conventions. To ensure consistency, we should verify similar changes in other files.
Run the following script to check for consistency across the project:
This script will help identify any inconsistencies in naming conventions across the fio configuration files.
✅ Verification successful
Consistency of naming verified across the project
All instances of 'bw' have been successfully updated to 'bandwidth'. No inconsistencies found.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Check for any remaining instances of 'bw' in fio configuration files echo "Checking for 'bw' in fio config files:" rg '\[.*bw.*\]' fio/*.fio echo "Checking for 'bw-include.fio' references:" rg 'bw-include\.fio' fio/*.fio echo "Verifying 'bandwidth' usage in fio config files:" rg '\[.*bandwidth.*\]' fio/*.fio rg 'bandwidth-include\.fio' fio/*.fioLength of output: 3586
fio/bandwidth-sequential-read.fio (1)
1-4: Approve changes and verify included file renamingThe changes improve clarity and consistency in the configuration file. The section header now uses the full word "bandwidth" instead of the abbreviation "bw", which aligns well with the filename. Similarly, the included file has been renamed from
bw-include.fiotobandwidth-include.fio.To ensure that the included file has been correctly renamed and that no other files are affected, please run the following verification script:
This script will help ensure that the renaming has been applied consistently across the project.
✅ Verification successful
Included file renaming verified successfully
All changes related to renaming
bw-include.fiotobandwidth-include.fiohave been correctly applied, and no remaining references tobw-include.fiowere found.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the renaming of bw-include.fio to bandwidth-include.fio and check for any remaining references to bw-include.fio # Check if bandwidth-include.fio exists if [ -f "fio/bandwidth-include.fio" ]; then echo "bandwidth-include.fio exists" else echo "Error: bandwidth-include.fio not found" fi # Check if bw-include.fio still exists (it shouldn't) if [ -f "fio/bw-include.fio" ]; then echo "Warning: bw-include.fio still exists" else echo "bw-include.fio has been removed" fi # Search for any remaining references to bw-include.fio echo "Searching for any remaining references to bw-include.fio:" rg "bw-include\.fio"Length of output: 358
Script:
#!/bin/bash # Description: Re-verify the renaming of bw-include.fio to bandwidth-include.fio and ensure no references to bw-include.fio remain. # Check if bandwidth-include.fio exists if [ -f "fio/bandwidth-include.fio" ]; then echo "bandwidth-include.fio exists" else echo "Error: bandwidth-include.fio not found" fi # Check if bw-include.fio still exists (it shouldn't) if [ -f "fio/bw-include.fio" ]; then echo "Warning: bw-include.fio still exists" else echo "bw-include.fio has been removed" fi # Search for any remaining references to bw-include.fio with verbose output echo "Searching for any remaining references to bw-include.fio:" rg --context 2 "bw-include\.fio" || echo "No references found or rg encountered an error."Length of output: 475
fio/bandwidth-random-write.fio (4)
1-1: Improved clarity in section headerThe change from
[rand-write-bw]to[rand-write-bandwidth]enhances readability and understanding. This aligns well with the PR objective of simplifying metrics and focusing on key performance indicators.
2-2: Consistent I/O pattern specificationThe
readwrite=randwriteparameter correctly aligns with the section header, maintaining the focus on random write operations for bandwidth measurement.
1-4: Summary: Improved clarity and consistency in FIO configurationThe changes to this file successfully achieve the PR's objective of simplifying metrics and focusing on key performance indicators. The modifications enhance readability and maintain consistency across the configuration, particularly in the naming of sections and included files. These updates should make the configuration more accessible to users while preserving the core functionality of the random write bandwidth test.
3-4: Consistent naming in include statement and verification neededThe update from
bw-include.fiotobandwidth-include.fioimproves consistency with the section header change. This enhances overall readability and maintainability of the configuration.Please verify that the
bandwidth-include.fiofile exists and contains the expected configurations. Run the following script to check:✅ Verification successful
Verification Successful: Renamed include statement confirmed
The
bandwidth-include.fiofile exists and no references tobw-include.fiowere found, confirming the update.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the existence of bandwidth-include.fio and its content # Test: Check if the file exists if [ -f "fio/bandwidth-include.fio" ]; then echo "File fio/bandwidth-include.fio exists." # Display the content of the file cat fio/bandwidth-include.fio else echo "Error: File fio/bandwidth-include.fio does not exist." fi # Test: Check for any remaining references to bw-include.fio echo "Checking for any remaining references to bw-include.fio:" rg "bw-include.fio"Length of output: 329
fio/bandwidth-random-read.fio (1)
1-4: LGTM! Consider verifying related files for consistency.The changes improve clarity by using "bandwidth" instead of "bw" in both the section header and include statement. This is consistent with the file name and makes the configuration more readable.
To ensure consistency across the project, please run the following script to check for any remaining "bw" references that might need updating:
✅ Verification successful
Verification Successful!
All
.fioconfiguration files have been checked, and no instances of "bw" abbreviations remain. The changes ensure consistency and improve clarity across the project.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for any remaining "bw" references in FIO configuration files # Search for "bw" in .fio files, excluding the word "bandwidth" rg '\bbw\b' --type fio -g '!*bandwidth*' # List all .fio files to verify if any need renaming fd -e fioLength of output: 668
Script:
#!/bin/bash # Description: Check for any remaining "bw" references in FIO configuration files # Search for whole word "bw" in .fio files, excluding lines containing "bandwidth" rg '\bbw\b' -g '*.fio' --glob '!*bandwidth*' # List all .fio files to verify if any need renaming fd -e fioLength of output: 644
fio/common-include.fio (1)
7-9: Approve changes to FIO parameters for improved performance measurementThe modifications to the FIO parameters are well-aligned with the PR objectives of simplifying kbench metrics and focusing on key performance indicators. Here's a breakdown of the benefits:
- Increasing
ramp_timefrom 5s to 60s allows for a more stable performance measurement by eliminating initial fluctuations.- Extending
runtimefrom 20s to 60s provides more accurate average performance metrics, especially for systems with variable performance characteristics.- Adding
group_reporting=1simplifies the output by aggregating results, which supports the goal of focusing on key performance indicators.These changes collectively contribute to more reliable and focused performance measurements.
metric-exporter/vendor/github.com/matttproud/golang_protobuf_extensions/v2/pbutil/Makefile (2)
3-5: LGTM: Well-definedcovertargetThe
covertarget is well-defined and follows good practices:
- It runs Go tests with coverage analysis.
- It generates a coverage profile file.
- It displays the coverage results in a functional format.
This target will be useful for developers to quickly check test coverage.
7-7: LGTM: Correct use of .PHONYThe
.PHONYdirective is correctly used to declare thecovertarget as phony. This prevents conflicts with any file namedcoverand ensures the target always runs.fio/bandwidth-quick.fio (3)
1-4: Sequential read bandwidth test configuration looks goodThe
[seq-read-bandwidth]section is well-defined with the correctreadwriteparameter set to "read". The inclusion ofbandwidth-include.fioandquick-include.fiosuggests that common configurations are appropriately separated, promoting code reuse and maintainability.
6-9: Sequential write bandwidth test configuration is properly set upThe
[seq-write-bandwidth]section mirrors the read test structure, with thereadwriteparameter correctly set to "write". This symmetry in configuration between read and write tests is a good practice, ensuring consistent testing methodology for both operations.
1-9: Simplified configuration focuses on sequential I/O performanceThe changes in this file align well with the PR objective of simplifying kbench metrics to focus on key performance indicators. By removing the random read and write tests and focusing on sequential I/O, the benchmark becomes more targeted and potentially more relevant for specific use cases.
The renaming of sections and include files improves clarity and maintains consistency in naming conventions. This change makes the configuration more intuitive and easier to understand.
To ensure consistency across the project, let's verify the changes in related files:
metric-exporter/vendor/github.com/cespare/xxhash/v2/testall.sh (2)
1-2: Excellent use of shell options for error handling.The script starts with good practices:
- Using
#!/bin/bashensures the script runs with bash.- The
set -eu -o pipefailoption combination is ideal for scripts running tests:
-e: Exits immediately if a command exits with a non-zero status.-u: Treats unset variables as an error when substituting.-o pipefail: Causes a pipeline to fail if any command in it fails.These options help catch and handle errors early, which is crucial for a test script.
7-8: Appropriate test coverage for amd64 architecture.These commands effectively cover testing for the host architecture (assumed to be amd64):
go test ./...: Runs all tests using the default (likely optimized) implementation.go test -tags purego ./...: Runs all tests using the pure Go implementation.This approach ensures that both the optimized and pure Go implementations are tested on the host architecture, which is crucial for maintaining compatibility and performance across different use cases.
Dockerfile.dapper (2)
6-6: Update repository referenceThe
DAPPER_SOURCEenvironment variable has been updated to reflect the new repository location under the Longhorn organization. This change is consistent with the PR objectives.To ensure all repository references have been updated consistently, please run the following script:
Consider using a centralized configuration for repository references to make future updates easier and more consistent.
✅ Verification successful
Repository references successfully updated
All repository references have been updated to
longhorn/kbench. No remaining references toyasker/kbenchwere found.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for any remaining references to the old repository # Test: Search for any remaining references to 'yasker/kbench' rg -i 'yasker/kbench' # Test: Verify that all necessary references now point to 'longhorn/kbench' rg -i 'longhorn/kbench'Length of output: 1145
1-1: Verify compatibility with the updated Go versionThe base image has been updated from
golang:1.17-alpinetogolang:1.23-alpine. This is a significant version jump that could potentially introduce compatibility issues.To ensure compatibility, please run the following script:
Consider adding a CI job to regularly test builds with newer Go versions to catch potential compatibility issues early.
metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash_asm.go (2)
1-5: LGTM: Build constraints are well-defined and appropriate.The build constraints are correctly specified using both new-style (line 1) and old-style (lines 2-5) syntax, ensuring compatibility across different Go versions. These constraints appropriately target 64-bit architectures (amd64 and arm64) while excluding certain environments (appengine, purego) and including the standard Go compiler (gc). This is typical and necessary for assembly implementations to ensure they are only built in supported environments.
7-12: LGTM: Package declaration and Sum64 function are correctly defined.The package is appropriately declared as "xxhash". The Sum64 function is well-documented and correctly declared with the signature
func Sum64(b []byte) uint64. The use of the//go:noescapedirective is correct and important for performance optimization in assembly implementations. It indicates that the function does not allow Go pointers to escape to the heap, which can lead to better performance.Note that the lack of a function body is expected here, as the actual implementation will be in assembly code.
metric-exporter/vendor/github.com/cpuguy83/go-md2man/v2/md2man/md2man.go (2)
1-5: LGTM: Package declaration and imports are correct.The package name
md2manis appropriate for its purpose of converting markdown to man pages. The import ofgithub.com/russross/blackfriday/v2is correct and uses the v2 version of the library.
1-14: Verify the existence ofNewRoffRenderer()function.The
Renderfunction callsNewRoffRenderer(), which is not defined in this file. Please ensure thatNewRoffRenderer()is defined in another file within themd2manpackage. If it's not, consider adding its implementation or importing it from the correct package.To verify the existence of
NewRoffRenderer(), you can run the following command:If the function is not found, you may need to implement it or update the import statements.
metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash_safe.go (1)
1-7: LGTM: Build tags and package declaration are correct.The build tags for App Engine are properly formatted and placed. The comment clearly explains the file's purpose, and the package declaration is correct.
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/get_pid_gopherjs.go (2)
1-15: LGTM: Appropriate license and build constraints.The file includes the correct Apache 2.0 license header and appropriate build constraints for JavaScript environments excluding WebAssembly. This ensures the code is used in the intended context.
17-17: LGTM: Correct package declaration.The package declaration "prometheus" is consistent with the directory structure and the Prometheus client library conventions.
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/get_pid.go (4)
1-15: LGTM: License and build constraints are correctly implemented.The Apache 2.0 license header is properly included, which is essential for open-source projects. The build constraints are correctly implemented, ensuring this file is built for all targets except JavaScript (unless it's WebAssembly).
Note: The file uses both the new (
//go:build) and old (// +build) syntax for build constraints. This is good for maintaining compatibility with older Go versions while also using the newer, more expressive syntax.
17-19: LGTM: Package declaration and import are correct.The file is correctly declared as part of the
prometheuspackage, which aligns with its location in the file structure. The import of theospackage is necessary and appropriate for the functionality provided by this file.
21-26: LGTM: Efficient implementation of PID retrieval.The
getPIDFn()function is well-implemented:
- It uses a closure to capture the PID, ensuring it's only retrieved once.
- The returned function has the correct signature
func() (int, error).- It always returns a nil error, which is appropriate as
os.Getpid()doesn't produce errors.This implementation is efficient for scenarios where the PID needs to be accessed multiple times, as it avoids unnecessary system calls.
1-26: Overall: Excellent implementation of PID retrieval for Prometheus client.This file is well-structured, concise, and implements a single, focused functionality efficiently. It follows Go best practices and aligns well with its purpose in the Prometheus client library. The use of a closure for caching the PID is a smart optimization. No issues or areas for improvement were identified.
metric-exporter/vendor/github.com/pkg/errors/Makefile (3)
1-4: LGTM: Variable declarations are well-defined.The variable declarations for packages, source directories, and the Go command are correctly defined and follow Makefile conventions. Using the
shellcommand to dynamically get source directories is a good practice.
42-44: LGTM: Well-implemented gofmt check.The
gofmttarget is correctly implemented:
- It uses
test -zto check if there are any formatting issues.- The command outputs the diff to stderr, which is good for visibility.
- The check covers all source directories.
This implementation ensures that the code adheres to Go's formatting standards.
1-44: Verify the vendoring process and consider alternatives.While the Makefile itself is well-structured and comprehensive, its presence in a vendored package (
metric-exporter/vendor/github.com/pkg/errors/) is unusual and raises concerns:
- Vendored packages typically should not be modified directly, as this can lead to difficulties in updating dependencies and maintaining consistency.
- The presence of a Makefile in a vendored package suggests that the vendor directory might be managed manually or through an unconventional method.
Please verify the vendoring process and consider the following:
- If you're intentionally forking and modifying the
github.com/pkg/errorspackage, consider maintaining it as a separate repository and including it as a replacement in yourgo.modfile.- If this is unintentional, review your vendoring process and ensure you're using standard Go modules for dependency management.
Run the following commands to check the module setup:
Based on the results, you may need to update your module configuration or vendoring process.
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/internal/go_collector_options.go (3)
1-12: LGTM: Proper license header included.The file includes the standard Apache License 2.0 header, which is appropriate for this open-source project.
14-14: Appropriate use of internal package.The
internalpackage declaration restricts the visibility of this package, which aligns well with the intention to limit direct usage ofGoCollectorOptions. This encapsulation helps maintain better control over the API surface.
16-16: LGTM: Necessary import included.The import of the "regexp" package is required for the
*regexp.Regexptype used in theGoCollectorRulestruct.metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/fnv.go (3)
1-14: LGTM: License and package declaration are correct.The Apache License 2.0 is properly included, and the package declaration is appropriate for the file location.
16-21: LGTM: Constants are correctly defined for FNV-1a algorithm.The constants
offset64andprime64are properly declared with the correct values for the FNV-1a hash algorithm. The comment provides helpful context for the implementation.
23-26: LGTM: hashNew function is correctly implemented.The
hashNewfunction is properly implemented, returning the initial offset value for the FNV-1a hash algorithm. The function name and comment are clear and follow Go conventions.metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/build_info_collector.go (2)
1-14: LGTM: Appropriate license header and package declaration.The file includes a complete Apache 2.0 license header, which is appropriate for open-source projects. The package declaration "prometheus" aligns with the file's location in the project structure.
16-16: LGTM: Necessary import included.The import of "runtime/debug" is appropriate and necessary for reading build information using
debug.ReadBuildInfo().metric-exporter/vendor/github.com/pkg/errors/go113.go (5)
1-7: LGTM: Appropriate package setup and importsThe file header and package declaration are well-structured:
- The build constraint ensures compatibility with Go 1.13 and later versions.
- The package name "errors" is consistent with the functionality provided.
- Importing the standard "errors" package as "stderrors" effectively prevents naming conflicts.
9-16: LGTM: Well-documented and correctly implementedIsfunctionThe
Isfunction is implemented correctly:
- It's a thin wrapper around the standard library's
errors.Isfunction.- The documentation comment is comprehensive, explaining the function's behavior, including the concept of error chains and how errors are matched.
This implementation ensures consistency with the standard library while allowing for package-specific error handling.
18-31: LGTM: Well-documented and correctly implementedAsfunctionThe
Asfunction is implemented correctly:
- It's a thin wrapper around the standard library's
errors.Asfunction.- The documentation comment is detailed and informative, covering:
- The function's behavior in finding and setting matching errors
- The concept of error chains
- How errors are matched (concrete value assignment or
Asmethod)- Potential panic conditions
- Return value behavior
This implementation ensures consistency with the standard library while providing clear usage guidelines.
33-38: LGTM: Well-documented and correctly implementedUnwrapfunctionThe
Unwrapfunction is implemented correctly:
- It's a thin wrapper around the standard library's
errors.Unwrapfunction.- The documentation comment is concise yet informative, explaining:
- The function's behavior in calling the
Unwrapmethod on the error- The return value when the error doesn't have an
UnwrapmethodThis implementation ensures consistency with the standard library while providing clear usage information.
1-38: LGTM: Excellent implementation of Go 1.13+ error handlingThis file provides a robust implementation of Go 1.13+ error handling functions:
- The
Is,As, andUnwrapfunctions are correctly implemented as thin wrappers around their standard library counterparts.- Documentation is comprehensive, clear, and provides valuable insights into each function's behavior.
- The use of build constraints ensures compatibility with Go 1.13 and later versions.
This implementation ensures that the
github.com/pkg/errorspackage remains consistent with standard library error handling while potentially allowing for future package-specific enhancements.deploy/fio.yaml (1)
Line range hint
31-49: LGTM! Simplified mode configuration.The simplification of the mode configuration, focusing on the
fullmode to run all tests, aligns well with the PR objective of simplifying kbench metrics to focus on key performance indicators.metric-exporter/vendor/github.com/matttproud/golang_protobuf_extensions/v2/pbutil/encode.go (4)
1-15: LGTM: License and package declaration are appropriate.The Apache 2.0 license is correctly included, and the package name
pbutilis concise and relevant to the file's content.
17-22: LGTM: Imports are appropriate and well-organized.The import statements include all necessary packages for the function's implementation. The organization follows good practices with standard library imports preceding third-party imports.
24-29: LGTM: Function documentation is clear and comprehensive.The comment for
WriteDelimitedprovides a detailed explanation of the function's purpose, behavior, and context. It's particularly helpful that it mentions the equivalent Java API, which aids in understanding and potential interoperability.
30-49: LGTM: Function implementation is correct and efficient.The
WriteDelimitedfunction correctly implements the described behavior, with appropriate error handling and efficient use of a fixed-size buffer for varint encoding.A minor suggestion for improvement:
Consider adding a constant for the maximum encoded length of a 32-bit varint (5 bytes) instead of using
binary.MaxVarintLen32. This would make the code more self-documenting:const maxEncodedLen32 = 5 var buf [maxEncodedLen32]byteAlso, regarding the TODO comment:
If there's no open issue, consider creating one to track this potential future improvement.
✅ Verification successful
LGTM: Function implementation is correct and efficient.
The
WriteDelimitedfunction correctly implements the described behavior, with appropriate error handling and efficient use of a fixed-size buffer for varint encoding.A minor suggestion for improvement:
Consider adding a constant for the maximum encoded length of a 32-bit varint (5 bytes) instead of using
binary.MaxVarintLen32. This would make the code more self-documenting:const maxEncodedLen32 = 5 var buf [maxEncodedLen32]byteAlso, regarding the TODO comment:
No existing issue was found for allowing the caller to specify an encode buffer. Consider creating an issue to track this potential future improvement.Category:
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Check if there's an open issue for the TODO item gh issue list --repo longhorn/kbench --search "in:title Allow caller to specify encode buffer"Length of output: 96
Script:
#!/bin/bash # Search for any open issues related to allowing the caller to specify an encode buffer with broader keywords gh issue list --repo longhorn/kbench --state open --search "encode buffer"Length of output: 76
Script:
#!/bin/bash # Search for any open issues related to allowing the caller to specify an encode buffer with various keywords gh issue list --repo longhorn/kbench --state open --search "encode buffer OR specify encode buffer OR custom encode buffer OR configurable encode buffer"Length of output: 155
deploy/fio-cmp.yaml (1)
Line range hint
1-95: Overall, the changes align well with the PR objectives.The modifications to this file successfully simplify the kbench metrics configuration while focusing on key performance indicators. The changes include:
- Swapping storage classes for PVCs to enable performance comparison.
- Updating the container image to use the official Longhorn repository.
- Simplifying the test mode configuration to run all tests by default.
These changes contribute to a more streamlined and focused benchmarking process. The suggestions provided in the review comments aim to further improve flexibility, reproducibility, and documentation of the configuration.
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/internal/almost_equal.go (5)
1-24: LGTM: Copyright notice and package declaration are appropriate.The copyright notice, license information, and explanation for including this code are clear and follow good practices. The use of the
internalpackage is appropriate for code that should not be imported by external packages.
26-28: LGTM: Imports are minimal and appropriate.The import of the "math" package is necessary and sufficient for the functions implemented in this file.
30-31: LGTM:minNormalFloat64is correctly defined.The
minNormalFloat64constant is properly defined usingmath.Float64frombits. This is an efficient way to represent the smallest positive normal value of type float64, which is crucial for handling near-zero comparisons in theAlmostEqualFloat64function.
33-47: LGTM:AlmostEqualFloat64function is well-implemented.The
AlmostEqualFloat64function follows best practices for floating-point comparisons:
- It handles special cases appropriately (exact equality, zero values, very small values).
- It uses a relative error approach, which is generally more robust than absolute error for floating-point comparisons.
- The algorithm source is cited, providing transparency and additional context.
The implementation is correct and should handle a wide range of floating-point comparison scenarios effectively.
49-60: LGTM:AlmostEqualFloat64sfunction is correctly implemented.The
AlmostEqualFloat64sfunction is well-designed:
- It efficiently checks for slice length equality before proceeding with comparisons.
- It correctly uses
AlmostEqualFloat64for element-wise comparison.- The early return on finding a mismatch optimizes performance for unequal slices.
This implementation should correctly and efficiently compare slices of float64 values within the specified epsilon tolerance.
.github/workflows/build.yml (1)
1-10: LGTM: Workflow triggers are well-defined.The workflow triggers cover all necessary scenarios:
- Pushes to 'master' and version branches/tags
- Pull requests
- Manual triggering
This ensures the workflow runs when needed, supporting continuous integration and deployment practices.
metric-exporter/vendor/github.com/cespare/xxhash/v2/README.md (1)
1-72: Excellent README that aligns with PR objectives.This comprehensive README effectively communicates the features, performance benefits, and real-world applications of the xxhash package. It aligns well with the PR objective of simplifying kbench metrics to focus on key performance indicators, as it clearly demonstrates the performance advantages of xxhash.
The document structure, code examples, and benchmarks provide valuable information for potential users. The minor suggestions for improvement (adding a performance comparison, adjusting punctuation, and standardizing list formatting) would further enhance its clarity and consistency.
Overall, this README significantly contributes to the goal of streamlining and improving the kbench metrics by showcasing a high-performance hashing solution.
🧰 Tools
🪛 LanguageTool
[uncategorized] ~35-~35: Possible missing comma found.
Context: ... ## Compatibility This package is in a module and the latest code is in version 2 of ...(AI_HYDRA_LEO_MISSING_COMMA)
🪛 Markdownlint
68-68: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
69-69: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
70-70: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
71-71: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
72-72: Expected: asterisk; Actual: dash
Unordered list style(MD004, ul-style)
12-12: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
21-21: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
61-61: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
metric-exporter/vendor/github.com/pkg/errors/README.md (3)
24-42: Well-explained error cause retrieval section.This section effectively explains the concept of retrieving the original cause of an error. The inclusion of the
causerinterface definition and practical code examples enhances understanding. The link to the package documentation for further information is a valuable addition.
51-59: Clear contributing guidelines and license information.The contributing section effectively communicates the project's current state and guidelines for submitting contributions. It's appropriate for a project in maintenance mode and provides clear instructions for potential contributors.
The license information is concise and standard, which is perfect for this README file.
1-5:⚠️ Potential issueMinor grammatical correction needed in package description.
The package description is concise and informative. However, there's a minor grammatical issue that should be addressed.
Please apply the following change:
-Package errors provides simple error handling primitives. +Package errors provide simple error handling primitives.The rest of the header section, including the badges and installation instruction, looks good and provides valuable information about the project.
Likely invalid or redundant comment.
🧰 Tools
🪛 LanguageTool
[style] ~1-~1: Using many exclamation marks might seem excessive (in this case: 4 exclamation marks for a text that’s 2207 characters long)
Context: # errors(EN_EXCESSIVE_EXCLAMATION)
[grammar] ~3-~3: It seems that the correct verb form here is “provide”.
Context: ...b.com/pkg/errors?badge) Package errors provides simple error handling primitives. `go ...(AGREEMENT_SENT_START_2)
fio/run.sh (5)
11-16: LGTM: Improved TEST_FILE handlingThe changes to the TEST_FILE handling improve flexibility by allowing the file name to be set via an environment variable ($FILE_NAME) if not provided as an argument. The error handling for an empty TEST_FILE remains appropriate.
20-21: LGTM: Improved code formattingThe indentation adjustment for the CPU_IDLE_PROF handling improves code readability while maintaining the same functionality.
27-30: LGTM: Improved code formatting for TEST_OUTPUT and TEST_SIZEThe indentation adjustments for TEST_OUTPUT and TEST_SIZE handling improve code readability while maintaining the same functionality for both variables.
Also applies to: 36-39
114-119: LGTM: Improved output file naming conventionThe changes to the output file naming convention are excellent. By differentiating between read and write operations, the results will be much clearer and easier to analyze. The naming is consistent and descriptive, which will improve the overall usability of the benchmarking tool.
Line range hint
1-163: Overall: Excellent improvements to the benchmarking scriptThe changes made to the
fio/run.shscript significantly enhance its functionality, flexibility, and usability. Key improvements include:
- More granular control over benchmarking tests with new specific modes.
- Improved output file naming to differentiate between read and write operations.
- Separate benchmarking steps for read and write operations in IOPS, bandwidth, and latency tests.
These changes allow for more detailed analysis of system performance and enhance the overall maintainability of the script.
Regarding the past review comment about retaining sequential IOPS/latency options, it appears that these have been removed as suggested. To verify this, we can run the following script:
If this script returns no results, it confirms that the sequential IOPS/latency options have been removed as discussed in the previous review.
metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash_other.go (2)
7-62: FunctionSum64implementation looks goodThe implementation of the
Sum64function correctly computes the 64-bit xxHash digest of the input byte slice.
64-76: FunctionwriteBlocksimplementation looks goodThe
writeBlocksfunction correctly processes data blocks and updates the digest state.metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash_unsafe.go (3)
38-41: Efficient implementation ofSum64StringThe function
Sum64Stringoptimizes the computation of the 64-bit xxHash digest of a string by avoiding unnecessary data copies through unsafe conversions. The implementation is correct and the accompanying comments provide clear explanations of the approach and its benefits.
45-51: OptimizedWriteStringmethod without data copyingThe
WriteStringmethod efficiently appends string data to the digest by leveraging unsafe conversions to prevent data copying, resulting in performance improvements. The code is accurate, and the comments effectively describe the inlining considerations and the rationale behind the fixed return values.
55-58: Usage of customsliceHeaderfor unsafe conversionsThe definition of the
sliceHeaderstruct facilitates the unsafe conversion from a string to a byte slice. This approach cleverly mimics the layout needed for the conversion while minimizing the inliner's cost model. Ensure that this method remains compatible with future versions of Go, as changes to theunsafepackage or compiler optimizations might affect its behavior.To confirm the continued safety and compatibility of this unsafe conversion, consider reviewing the latest Go documentation on
unsafe.Pointerusage, especially regarding struct layouts and pointer conversions.metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/expvar_collector.go (3)
16-19:⚠️ Potential issueConsider adding necessary imports for error handling
The package relies on functions like
fmt.Printffor logging, which requires thefmtpackage. Ensure that all necessary imports are included.Add the missing import:
import ( "encoding/json" "expvar" + "fmt" + "strconv" )Likely invalid or redundant comment.
25-33:⚠️ Potential issueAvoid introducing deprecated functions in new code
The function
NewExpvarCollectoris marked as deprecated and advises users to usecollectors.NewExpvarCollectorinstead. Since this is new code, consider removing the deprecated function and directly using the recommendedcollectors.NewExpvarCollector.Apply this diff to remove the deprecated function:
-// NewExpvarCollector is the obsolete version of collectors.NewExpvarCollector. -// See there for documentation. -// -// Deprecated: Use collectors.NewExpvarCollector instead. -func NewExpvarCollector(exports map[string]*Desc) Collector { - return &expvarCollector{ - exports: exports, - } -}Likely invalid or redundant comment.
51-55: Check for potential nil pointer dereferenceThe expression
len(desc.variableLabels.names)assumes thatdesc.variableLabelsanddesc.variableLabels.namesare notnil. Ensure that these fields are properly initialized to prevent anilpointer dereference.Run the following script to search for all usages of
variableLabelsand confirm they are properly initialized:✅ Verification successful
Verified:
variableLabelsare properly initializedAll instances of
Descstruct initialization assign a non-nil value tovariableLabels, ensuring thatdesc.variableLabelsanddesc.variableLabels.namesare always initialized. This prevents any potential nil pointer dereference in the reviewed code section.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify that all `variableLabels` are initialized. # Test: Search for struct initializations of `Desc` and check initialization of `variableLabels`. rg --type go --pcre2 'Desc\{.*\}' -A 3Length of output: 479
Script:
#!/bin/bash # Description: Verify that all `Desc` struct initializations include non-nil `variableLabels`. # Use ast-grep to find all Desc struct initializations and check for variableLabels assignment. ast-grep --lang go --pattern ' Desc { $$$ variableLabels: $$$ $$$ }'Length of output: 1433
Script:
#!/bin/bash # Description: Verify that `desc.variableLabels` is properly initialized and that `compile()` does not return nil. # Find all initializations of `variableLabels` in `Desc` struct ast-grep --lang go --pattern ' Desc { $$$ variableLabels: $$$ $$$ }' # Find the implementation of the `compile` method for `variableLabels` ast-grep --lang go --pattern ' func (vl *VariableLabels) compile() $$$ { $$$ }'Length of output: 1517
fio/parse.sh (8)
15-21: Addition of separate variables for read and write metrics improves clarityThe introduction of distinct variables for read and write metrics enhances the script's readability and allows for more precise handling of each metric type.
22-24: Correctly parsing read IOPS when the output file existsThe conditional check ensures that the script only attempts to parse read IOPS if the corresponding output file is present, preventing potential errors.
26-28: Correctly parsing write IOPS when the output file existsSimilar to the read IOPS parsing, this ensures robustness by checking for the existence of the write IOPS output file before parsing.
30-31: Parsing read bandwidth metrics when the output file existsThis addition appropriately handles the parsing of read bandwidth metrics, aligning with the new separation of read and write outputs.
34-35: Parsing write bandwidth metrics when the output file existsThis ensures that write bandwidth metrics are parsed only when available, maintaining consistency with the handling of other metrics.
38-40: Parsing read latency metrics when the output file existsIncluding this check enhances the script's flexibility by conditionally parsing read latency metrics.
42-43: Parsing write latency metrics when the output file existsThis complements the read latency parsing and completes the handling of latency metrics for both read and write operations.
98-101:⚠️ Potential issueInconsistent use of 'Sequential' bandwidth in summary output
In the non-CPU idleness profiling section, the bandwidth summary is labeled as "Sequential" and uses
$SEQ_READ_BWand$SEQ_WRITE_BW. Given the focus on key performance indicators and the removal of sequential metrics, consider updating this section to use "Random" bandwidth metrics for consistency.Check if
$RAND_READ_BWand$RAND_WRITE_BWare defined and contain the correct values.Run the following script to verify the variable definitions:
If the variables are available, apply this diff to update the bandwidth summary:
- printf -v cxt "Bandwidth in KiB/sec (Read/Write)\n$FMT\n"\ - "Sequential:" \ - "$(commaize $SEQ_READ_BW) / $(commaize $SEQ_WRITE_BW)" + printf -v cxt "Bandwidth in KiB/sec (Read/Write)\n$FMT\n"\ + "Random:" \ + "$(commaize $RAND_READ_BW) / $(commaize $RAND_WRITE_BW)"fio/func.sh (5)
50-53: Variables assigned incalc_cmp_iopsmay not be usedStatic analysis indicates that
CMP_RAND_READ_IOPS,CMP_RAND_WRITE_IOPS, andCMP_CPU_IDLE_PCT_IOPSappear unused.Check for usage of these variables:
#!/bin/bash # Description: Search for usages of calculated comparison variables rg --type shell 'CMP_RAND_READ_IOPS|CMP_RAND_WRITE_IOPS|CMP_CPU_IDLE_PCT_IOPS'🧰 Tools
🪛 Shellcheck
[warning] 51-51: CMP_RAND_WRITE_IOPS appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 53-53: CMP_CPU_IDLE_PCT_IOPS appears unused. Verify use (or export if used externally).
(SC2034)
17-18: Verify ifSEQ_READ_BWandCPU_IDLE_PCT_BWare usedStatic analysis suggests these variables might be unused. Confirm their usage in the script.
Execute the following command:
#!/bin/bash # Description: Check for usages of SEQ_READ_BW and CPU_IDLE_PCT_BW rg --type shell 'SEQ_READ_BW|CPU_IDLE_PCT_BW'🧰 Tools
🪛 Shellcheck
[warning] 17-17: SEQ_READ_BW appears unused. Verify use (or export if used externally).
(SC2034)
68-70: Variables incalc_cmp_latmight not be usedVariables
CMP_RAND_READ_LATandCMP_RAND_WRITE_LATare assigned but may not be used elsewhere.Confirm their usage:
🧰 Tools
🪛 Shellcheck
[warning] 68-68: CMP_RAND_READ_LAT appears unused. Verify use (or export if used externally).
(SC2034)
5-6: Verify ifRAND_READ_IOPSandCPU_IDLE_PCT_IOPSare used in the scriptStatic analysis tools indicate that
RAND_READ_IOPSandCPU_IDLE_PCT_IOPSmay be unused. It's important to verify whether these variables are utilized after being assigned.Run the following script to check for usages:
🧰 Tools
🪛 Shellcheck
[warning] 5-5: RAND_READ_IOPS appears unused. Verify use (or export if used externally).
(SC2034)
57-63: Ensure variables incalc_cmp_bware utilizedVariables like
CMP_SEQ_READ_BW,CMP_SEQ_WRITE_BW, andCMP_CPU_IDLE_PCT_BWare calculated but may not be used.Verify their usage:
🧰 Tools
🪛 Shellcheck
[warning] 58-58: CMP_SEQ_READ_BW appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 61-61: CMP_SEQ_WRITE_BW appears unused. Verify use (or export if used externally).
(SC2034)
[warning] 63-63: CMP_CPU_IDLE_PCT_BW appears unused. Verify use (or export if used externally).
(SC2034)
metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash_arm64.s (2)
59-163: Ensure thorough testing of the ARM64 assembly implementationThe
Sum64function provides an optimized implementation of the xxHash algorithm for ARM64 architecture. Given the complexity and low-level nature of this assembly code, it's essential to verify its correctness across various inputs, including edge cases. Ensure that comprehensive tests are in place to validate this implementation against the standard Go version of the function.Would you like assistance in generating test cases or setting up benchmarks to compare performance and correctness?
164-183: Verify the alignment and layout assumptions of theDigeststructThe
writeBlocksfunction assumes that thev1tov4fields of theDigeststruct are stored contiguously in memory. Ensure that theDigeststruct in your codebase is defined accordingly to prevent any unexpected behaviors.Run the following script to check the
Digeststruct definition:✅ Verification successful
Verification Successful:
DigestStruct Alignment Confirmed🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify that the `Digest` struct fields v1 to v4 are stored contiguously. # Expected pattern: type Digest struct { v1 uint64; v2 uint64; v3 uint64; v4 uint64; ... } ast-grep --lang go --pattern $'type Digest struct { v1 uint64 v2 uint64 v3 uint64 v4 uint64 $$$ }'Length of output: 851
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/go_collector_go116.go (2)
68-74:Describemethod correctly implements theCollectorinterfaceThe
Describemethod properly sends metric descriptions to the provided channel, adhering to the PrometheusCollectorinterface requirements.
76-116: Concurrency handling inCollectmethod is appropriateThe
Collectmethod correctly handles concurrent collection of memory statistics using a goroutine with a timeout mechanism. Mutexes are appropriately used to protect shared resources, ensuring thread safety.metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash_amd64.s (1)
176-209: Verify the necessity of vendoring the assembly implementationIncluding a vendored assembly file
xxhash_amd64.sadds to the codebase size and may complicate dependency management. Ensure that vendoring this file is necessary. If the assembly optimization is crucial, and the upstream library supports module usage without vendoring, consider using it directly as a module. This approach can help keep dependencies up-to-date and reduce maintenance overhead.fio/cmp_parse.sh (5)
18-24: Definition of Read and Write Metrics Variables for the First VolumeThe introduction of separate variables for the first volume's read and write IOPS, bandwidth, and latency enhances granularity and clarity in performance data handling.
25-31: Definition of Read and Write Metrics Variables for the Second VolumeSimilarly, defining separate variables for the second volume's read and write metrics ensures consistency and improves the specificity of the performance analysis.
38-42: Repeat of Global Variable Overwriting Issue for the Second VolumeThe same potential issue with global variable overwriting applies to the parsing of the second volume's IOPS metrics.
46-51: Extend Refactoring to Bandwidth Parsing FunctionsFor consistency and to prevent similar issues, consider applying the same refactoring to the bandwidth parsing functions:
-parse_read_bw $FIRST_READ_BW -parse_write_bw $FIRST_WRITE_BW -FIRST_SEQ_READ_BW=$SEQ_READ_BW -FIRST_SEQ_WRITE_BW=$SEQ_WRITE_BW +FIRST_SEQ_READ_BW=$(parse_read_bw $FIRST_READ_BW) +FIRST_SEQ_WRITE_BW=$(parse_write_bw $FIRST_WRITE_BW)
60-65: Extend Refactoring to Latency Parsing FunctionsSimilarly, refactor the latency parsing to avoid reliance on global variables:
-parse_read_lat $FIRST_READ_LAT -parse_write_lat $FIRST_WRITE_LAT -FIRST_RAND_READ_LAT=$RAND_READ_LAT -FIRST_RAND_WRITE_LAT=$RAND_WRITE_LAT +FIRST_RAND_READ_LAT=$(parse_read_lat $FIRST_READ_LAT) +FIRST_RAND_WRITE_LAT=$(parse_write_lat $FIRST_WRITE_LAT)metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/internal/go_runtime_metrics.go (1)
127-140: Verify proper handling of negative buckets inreBucketExpfunction.The logic for rebucketing when
bucket < 0may not correctly handle scenarios where bucket values are negative. Ensure that the conditions and operations accurately process negative buckets to prevent incorrect bucketing.Run the following script to analyze how negative bucket values are handled:
If you need help adjusting the logic to correctly handle negative bucket values, I can assist with refactoring the code.
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/labels.go (4)
1-13: License Header ConsistencyEnsure that the license header matches the project's licensing requirements and is consistent across all files. Since this is a new file, it's important to verify that the Apache License, Version 2.0 is appropriate and properly formatted.
169-169: Avoid Unnecessary Slice CopyIn
validateLabelValues, the slicevalsis copied usingappend([]string(nil), vals...). If there's no specific reason to copy the slice, this step can be omitted to enhance performance.[performance]
Apply this diff to remove the unnecessary copy:- vals := append([]string(nil), vals...)
177-182: Validate UTF-8 Encoding of Label ValuesEnsure that all label values are valid UTF-8 strings. The current implementation uses
utf8.ValidString(val)for validation, which is correct. No issues found here.
186-188: SimplifycheckLabelNameFunctionThe
checkLabelNamefunction could be made more concise by directly returning the boolean expression without the need for an explicit return statement.Apply this diff to simplify the function:
-func checkLabelName(l string) bool { - return model.LabelName(l).IsValid() && !strings.HasPrefix(l, reservedLabelPrefix) -} +func checkLabelName(l string) bool { + return model.LabelName(l).IsValid() && !strings.HasPrefix(l, reservedLabelPrefix) +}(Note: In Go, the function is already as concise as possible. This comment may be unnecessary.)
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/collector.go (1)
1-12:⚠️ Potential issueEnsure compliance with Apache 2.0 License requirements
The file includes code under the Apache 2.0 License. Please ensure that your project complies with the Apache 2.0 License terms, including providing appropriate attribution, retaining the license headers, and including a copy of the license in your project.
Run the following script to verify that the LICENSE file is included in your repository:
✅ Verification successful
Apache 2.0 License Compliance Verified
The repository includes a valid Apache 2.0 LICENSE file in the root directory. Compliance with license requirements is confirmed.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for the presence of the Apache 2.0 LICENSE file. # Expected: The LICENSE file should be present in the repository root. fd -a '^LICENSE$'Length of output: 916
Script:
#!/bin/bash # Description: Verify that the LICENSE file in the repository root is the Apache 2.0 License. # Expected: The LICENSE file contains the standard Apache 2.0 License text. grep -q "Apache License, Version 2.0" ./LICENSE && echo "Apache 2.0 License found in LICENSE file." || echo "Apache 2.0 License not found in LICENSE file."Length of output: 142
metric-exporter/vendor/github.com/cespare/xxhash/v2/xxhash.go (3)
44-51:⚠️ Potential issuePotential data race in the
ResetmethodThe
Resetmethod modifies the internal state of theDigestwithout any synchronization. If instances ofDigestare used concurrently across multiple goroutines, this could lead to data races.Ensure that the
Digesttype is not used concurrently or protect it with synchronization primitives like mutexes. If concurrent use is intended, consider adding synchronization within the methods or documenting thatDigestis not safe for concurrent use.
114-153: Ensure correct implementation of theSum64methodThe
Sum64method is central to the correctness of the hash function. Verify that all steps adhere to the XXH64 algorithm specification, especially the final mixing stages.To confirm the correctness, you can compare the hash outputs with known test vectors using the following script:
#!/bin/bash # Description: Compare the hash outputs with known XXH64 test vectors. # Test: Compute hashes of test inputs and compare with expected values. echo -n "Hello, world!" | go run your_program.go | grep "expected_hash_value"Replace
your_program.gowith the appropriate file that usesxxhash, andexpected_hash_valuewith the known correct hash for the input.
1-3: Ensure compliance with third-party licensesWhen including third-party code like
xxhash, it's important to comply with the licensing terms of the original project. Thegithub.com/cespare/xxhash/v2package is licensed under the MIT License. Please ensure that you include the appropriate license files or notices in your project to comply with the license requirements.You can verify the inclusion of the license with the following script:
This script searches for files starting with
LICENSEin thevendor/directory to ensure that all necessary license files are included.✅ Verification successful
License Compliance Verified
The
metric-exporter/vendor/github.com/cespare/xxhash/v2/LICENSE.txtfile is present, ensuring compliance with the MIT License.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for the presence of LICENSE files in vendor directories. # Test: Find LICENSE files in the vendor directory. Expect: At least one LICENSE file per vendored package. fd --type f --glob 'LICENSE*' vendor/Length of output: 230
Script:
#!/bin/bash # Description: Check for the presence of LICENSE files in vendor directories using find. # Test: Find LICENSE files in all vendor subdirectories. Expect: At least one LICENSE file per vendored package. find vendor/ -type f \( -iname "LICENSE" -o -iname "LICENSE.*" \)Length of output: 110
Script:
#!/bin/bash # Description: Locate all vendor directories in the repository. # Attempt to find all 'vendor' directories fd --type d --glob 'vendor' || find . -type d -name 'vendor'Length of output: 51
Script:
#!/bin/bash # Description: Check for the presence of LICENSE files in the xxhash vendor directory. # Test: Find LICENSE files in metric-exporter/vendor/github.com/cespare/xxhash/v2/. # Expect: At least one LICENSE file present. find metric-exporter/vendor/github.com/cespare/xxhash/v2/ -type f \( -iname "LICENSE" -o -iname "LICENSE.*" \)Length of output: 176
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/desc.go (2)
170-170: Potential issue withinternal.LabelPairSorterAt line 170, the type
internal.LabelPairSorteris used from the imported package"github.com/prometheus/client_golang/prometheus/internal". Ensure that this internal package is accessible and properly vendored, as Go's internal packages are only accessible within the parent package and its sub-packages.
23-24: Ensure themodelpackage containsIsValidMetricNameThe function
model.IsValidMetricNameis used at line 98, but it's not clear if the imported"github.com/prometheus/common/model"package provides this function. Verify thatIsValidMetricNameexists in themodelpackage.metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/gauge.go (12)
32-53: Gauge Interface Definition Appears CorrectThe
Gaugeinterface is properly defined with all the necessary methods to manipulate gauge metrics, including setting values, incrementing, decrementing, and adjusting the gauge based on arbitrary values. This provides a comprehensive interface for gauge metric operations.
78-88:NewGaugeFunction Correctly Initializes Gauge InstancesThe
NewGaugefunction appropriately constructs a newGaugeinstance using the providedGaugeOpts. It sets up the descriptor and initializes self-collection, ensuring that the gauge is ready for use immediately after creation.
90-100:gaugeStruct Utilizes Atomic Operations for Thread SafetyThe
gaugestruct correctly uses an atomicuint64to store the float64 value of the gauge. This approach ensures thread-safe operations when the gauge value is accessed or modified concurrently, which is crucial in high-concurrency environments.
106-108:SetMethod Safely Updates Gauge ValueThe
Setmethod employsatomic.StoreUint64to safely update the gauge's value, ensuring that the operation is atomic and thread-safe.
110-112:SetToCurrentTimeMethod Accurately Sets Gauge to Current TimeThe
SetToCurrentTimemethod correctly sets the gauge's value to the current Unix time in seconds, providing a useful utility for time-based metrics.
122-130:AddMethod Correctly Handles Concurrent UpdatesThe
Addmethod uses an atomic compare-and-swap loop to safely update the gauge value by adding the provided value. This ensures that concurrent calls toAdddo not result in race conditions or inconsistent state.
132-134:SubMethod Appropriately Decreases Gauge ValueThe
Submethod correctly decreases the gauge value by calling theAddmethod with the negative of the provided value. This reuse of theAddmethod maintains consistency and reduces code duplication.
136-139:WriteMethod Correctly Populates Metric DataThe
Writemethod accurately retrieves the current value of the gauge and populates theMetricprotobuf message. This is essential for Prometheus to collect and export the metric data correctly.
150-157:NewGaugeVecFunction Correctly CreatesGaugeVecInstancesThe
NewGaugeVecfunction constructs a newGaugeVecusing the providedGaugeOptsand variable labels. It ensures that each gauge within the vector shares the same descriptor but can vary by label values, facilitating effective metric partitioning.
160-177:GaugeVecInitialization withGaugeVecOptsis Properly HandledThe
NewGaugeVecfunction (version 2) correctly initializes theGaugeVecwith the providedGaugeVecOpts, setting up descriptors and handling variable labels with constraints if any. This allows for more advanced configurations of gauge vectors.
203-208:GetMetricWithLabelValuesProperly Retrieves or Creates GaugesThe
GetMetricWithLabelValuesmethod correctly retrieves an existing gauge or creates a new one based on the provided label values. It also handles errors appropriately if the label cardinality does not match, ensuring robustness in metric management.
286-311:GaugeFuncandNewGaugeFuncProvide Flexible Metric CollectionThe
GaugeFuncinterface and theNewGaugeFuncfunction allow for gauges whose values are determined at collection time via a user-defined function. This provides flexibility for dynamic metrics whose values may change between collections.metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/counter.go (4)
248-254: Ensure Proper Handling of Errors inGetMetricWithLabelValuesIn the
GetMetricWithLabelValuesmethod:func (v *CounterVec) GetMetricWithLabelValues(lvs ...string) (Counter, error) { metric, err := v.MetricVec.GetMetricWithLabelValues(lvs...) if metric != nil { return metric.(Counter), err } return nil, err }If an error occurs,
metricmay benil. Ensure that callers of this method check for errors before using the returnedCounterto prevent potentialnilpointer dereferences.
269-274: Handle Errors Appropriately inGetMetricWithSimilarly, in the
GetMetricWithmethod:func (v *CounterVec) GetMetricWith(labels Labels) (Counter, error) { metric, err := v.MetricVec.GetMetricWith(labels) if metric != nil { return metric.(Counter), err } return nil, err }Ensure that any callers of
GetMetricWithhandle the case wheremetricisnildue to an error, to avoidnilpointer dereferences.
352-357: Concurrency Safety inNewCounterFuncIn
NewCounterFunc, the provided function must be concurrency-safe:func NewCounterFunc(opts CounterOpts, function func() float64) CounterFunc { return newValueFunc(NewDesc( BuildFQName(opts.Namespace, opts.Subsystem, opts.Name), opts.Help, nil, opts.ConstLabels, ), CounterValue, function) }Ensure that any function passed to
NewCounterFuncis safe for concurrent use, as metrics collection can happen from multiple goroutines simultaneously. Consider adding documentation to emphasize the need for thread-safe functions.
14-24:⚠️ Potential issueAvoid Modifying Vendored Dependencies
The file
counter.gois part of the Prometheus client library and is located under thevendordirectory. Modifying vendored code can lead to maintenance challenges and divergence from the upstream library. It's generally recommended to avoid altering vendored dependencies directly.To ensure no unintended changes have been made to the vendored code, you can compare it with the upstream version:
✅ Verification successful
Vendored Dependencies Unmodified
No modifications were detected in the vendored
counter.gofile compared to the upstream version.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Compare vendored Prometheus client library code with upstream. # Expected Result: No differences unless intentional modifications were made. # Clone the upstream repository. git clone https://github.com/prometheus/client_golang.git /tmp/prometheus_client_golang # Compare the vendored code with the upstream code. diff -r /tmp/prometheus_client_golang/prometheus/counter.go metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/counter.goLength of output: 342
Script:
#!/bin/bash # Description: Robustly compare vendored Prometheus client library code with upstream. # Set variables UPSTREAM_REPO_URL="https://github.com/prometheus/client_golang.git" CLONE_DIR="/tmp/prometheus_client_golang" # Remove existing clone directory if it exists rm -rf "$CLONE_DIR" # Clone the upstream repository quietly git clone --quiet "$UPSTREAM_REPO_URL" "$CLONE_DIR" if [ $? -ne 0 ]; then echo "Error: Failed to clone upstream repository." exit 1 fi # Check if the specific file exists in both repositories if [ ! -f "$CLONE_DIR/prometheus/counter.go" ]; then echo "Error: Upstream counter.go not found." exit 1 fi if [ ! -f "metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/counter.go" ]; then echo "Error: Vendored counter.go not found." exit 1 fi # Compare the vendored code with the upstream code diff_output=$(diff "$CLONE_DIR/prometheus/counter.go" "metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/counter.go") if [ $? -eq 0 ]; then echo "No differences found between vendored and upstream counter.go." elif [ $? -eq 1 ]; then echo "Differences detected between vendored and upstream counter.go:" echo "$diff_output" exit 1 else echo "An error occurred during file comparison." exit 1 fiLength of output: 802
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/go_collector_latest.go (3)
287-296: Correct implementation of theDescribemethodThe
Describemethod properly sends the descriptions of all metrics to the channel, including base metrics, memory statistics metrics, and runtime metrics. This ensures that Prometheus is aware of all the metrics the collector can provide.
298-363: Thread-safe collection of metricsThe
Collectmethod correctly locks the collector's mutex to ensure thread-safe access to shared resources during metric collection. This prevents race conditions and ensures consistency of the metrics reported.
407-452: Comprehensive mapping inmemStatsFromRMfunctionThe function
memStatsFromRMeffectively maps runtime metrics to theruntime.MemStatsfields, ensuring accurate reporting of memory statistics. This mapping is vital for providing insights into memory usage and garbage collection.metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/internal/difflib.go (2)
42-47: Verify the logic forcalculateRatiowhenlength == 0In the
calculateRatiofunction, whenlengthis zero, the function returns1.0. This implies that an empty sequence is considered identical to another empty sequence. Please verify if this behavior aligns with the intended similarity metric for your application.To confirm the behavior, you can add a test case where both sequences are empty and check if the ratio is
1.0.
567-639: Ensure resource cleanup and error handling inWriteUnifiedDiffIn the
WriteUnifiedDifffunction, defer statements are used for resource cleanup. Verify that the buffered writer is correctly flushed and that any errors during flushing are handled appropriately.Check that all errors are properly propagated and that resources are correctly managed to prevent potential data loss or resource leaks.
metric-exporter/vendor/github.com/matttproud/golang_protobuf_extensions/v2/pbutil/Makefile
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| build: | ||
| name: Build binaries | ||
| runs-on: ubuntu-latest | ||
| steps: | ||
| - name: Checkout code | ||
| uses: actions/checkout@v4 | ||
|
|
||
| - name: Build binaries | ||
| run: make | ||
|
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||
| - uses: codecov/codecov-action@v4 | ||
| with: | ||
| files: ./coverage.out | ||
| flags: unittests | ||
| token: ${{ secrets.CODECOV_TOKEN }} | ||
|
|
||
| - name: Upload binaries | ||
| uses: actions/upload-artifact@v4 | ||
| with: | ||
| name: binaries_artifact | ||
| path: ./bin/* |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider refining the build job for better specificity and efficiency.
The build job covers essential steps, but there are opportunities for improvement:
-
The
makecommand is used without a specific target. Consider specifying the exact target(s) needed for the build to ensure consistency and avoid unnecessary work. -
The artifact upload step includes all files in
./bin/. To optimize storage and download times, consider being more selective about which files are uploaded.
Here's a suggested improvement for the 'Build binaries' step:
- name: Build binaries
run: make build-specific-target # Replace with your specific make targetAnd for the 'Upload binaries' step:
- name: Upload binaries
uses: actions/upload-artifact@v4
with:
name: binaries_artifact
path: |
./bin/kbench
./bin/other-important-binary # Add specific binary namesThis will ensure only the necessary binaries are uploaded as artifacts.
| # longhornio/kbench image | ||
| - name: docker-publish | ||
| if: ${{ startsWith(github.ref, 'refs/heads/') }} | ||
| uses: docker/build-push-action@v5 | ||
| with: | ||
| context: ./ | ||
| push: true | ||
| platforms: linux/amd64,linux/arm64 | ||
| tags: longhornio/kbench:${{ env.branch }}-head | ||
| file: package/Dockerfile | ||
|
|
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider enhancing image tag for better traceability.
The Docker image build and push step for branches is well-configured with multi-platform support. However, the current tagging strategy can be improved.
Consider adding a timestamp or short commit hash to the image tag for better traceability. This can help identify exactly which commit the image was built from. Here's a suggested improvement:
- name: Set image tag
run: |
echo "IMAGE_TAG=${{ env.branch }}-$(date +%Y%m%d%H%M%S)-${GITHUB_SHA::8}" >> $GITHUB_ENV
- name: Build and push Docker image
uses: docker/build-push-action@v5
with:
context: ./
push: true
platforms: linux/amd64,linux/arm64
tags: longhornio/kbench:${{ env.IMAGE_TAG }}
file: package/DockerfileThis will create a tag like master-20231101123045-a1b2c3d4, providing more detailed information about when and from which commit the image was built.
| - name: docker-publish-with-tag | ||
| if: ${{ startsWith(github.ref, 'refs/tags/') }} | ||
| uses: docker/build-push-action@v5 | ||
| with: | ||
| context: ./ | ||
| push: true | ||
| platforms: linux/amd64,linux/arm64 | ||
| tags: longhornio/kbench:${{ github.ref_name }} | ||
| file: package/Dockerfile | ||
|
|
There was a problem hiding this comment.
🛠️ Refactor suggestion
Enhance tagging strategy for release versions.
The Docker image build and push step for tags is well-configured, but the tagging strategy can be improved to provide more flexibility for users.
Consider the following enhancements:
- Add a 'latest' tag for the most recent release.
- Include major and minor version tags.
Here's a suggested improvement:
- name: Generate Docker tags
if: startsWith(github.ref, 'refs/tags/')
run: |
VERSION=${GITHUB_REF#refs/tags/v}
MAJOR=${VERSION%%.*}
MINOR=${VERSION%.*}
echo "DOCKER_TAGS=longhornio/kbench:latest,longhornio/kbench:${VERSION},longhornio/kbench:${MINOR},longhornio/kbench:${MAJOR}" >> $GITHUB_ENV
- name: Build and push Docker image for tags
if: startsWith(github.ref, 'refs/tags/')
uses: docker/build-push-action@v5
with:
context: ./
push: true
platforms: linux/amd64,linux/arm64
tags: ${{ env.DOCKER_TAGS }}
file: package/DockerfileThis will create tags like latest, 1.2.3, 1.2, and 1 for a release tag v1.2.3, providing users with more options for version selection.
| v1 = round(v1, u64(b[0:8:len(b)])) | ||
| v2 = round(v2, u64(b[8:16:len(b)])) | ||
| v3 = round(v3, u64(b[16:24:len(b)])) | ||
| v4 = round(v4, u64(b[24:32:len(b)])) | ||
| b = b[32:len(b):len(b)] |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Simplify slice expressions to improve readability
In the writeBlocks function, you can simplify the full slice expressions since explicitly setting the capacity is unnecessary here.
Apply this diff to simplify the slice expressions:
- v1 = round(v1, u64(b[0:8:len(b)]))
- v2 = round(v2, u64(b[8:16:len(b)]))
- v3 = round(v3, u64(b[16:24:len(b)]))
- v4 = round(v4, u64(b[24:32:len(b)]))
- b = b[32:len(b):len(b)]
+ v1 = round(v1, u64(b[0:8]))
+ v2 = round(v2, u64(b[8:16]))
+ v3 = round(v3, u64(b[16:24]))
+ v4 = round(v4, u64(b[24:32]))
+ b = b[32:]📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| v1 = round(v1, u64(b[0:8:len(b)])) | |
| v2 = round(v2, u64(b[8:16:len(b)])) | |
| v3 = round(v3, u64(b[16:24:len(b)])) | |
| v4 = round(v4, u64(b[24:32:len(b)])) | |
| b = b[32:len(b):len(b)] | |
| v1 = round(v1, u64(b[0:8])) | |
| v2 = round(v2, u64(b[8:16])) | |
| v3 = round(v3, u64(b[16:24])) | |
| v4 = round(v4, u64(b[24:32])) | |
| b = b[32:] |
metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/internal/difflib.go
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metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/histogram.go
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metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/histogram.go
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metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/histogram.go
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metric-exporter/vendor/github.com/prometheus/client_golang/prometheus/histogram.go
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How about this? Besides, do we need to remove |
longhorn/longhorn#9460
Summary by CodeRabbit
New Features
cmp_parse.shscript, allowing for more granular data handling.func.shscript.Renderfunction in themd2manpackage for converting markdown to roff format.Bug Fixes
Documentation
Chores
go.modand import paths in various files to align with the new repository structure.