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testResults.2023.05.01.md

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Most recent, with 1) Netty Epoll, native, and 2) Unsafe

Primary performance test machine (my desktop)

sudo lshw
 *-cpu
          description: CPU
          product: Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz
          vendor: Intel Corp.

Options

This enables Netty unsafe, which shows as enabled in Spring Boot.

--add-opens java.base/jdk.internal.misc=ALL-UNNAMED -Dio.netty.tryReflectionSetAccessible=true

Performance tests

With PinnedThreadFactory (this commit)

Note: 3159 ms, lowest total millis for 20,000

Experiment size: 20000
--------------------- Blocking (much faster) --------------------
Took Nanos=3158576909
Avg Nanos=157928
Avg MICS=157
Took millis=3159, count=20000
Per milli=6, count=20000
Avg correlated mics=154.69846354999999
Min correlated mics=85

With thread affinity (this commit)

Note: First sub 160 RTT, First 84 mics best RTT

Experiment size: 20000
--------------------- Blocking (much faster) --------------------
Took Nanos=3250044674
Avg Nanos=162502
Avg MICS=162
Took millis=3251, count=20000
Per milli=6, count=20000
Avg correlated mics=158.95776665
Min correlated mics=84

Warm-up the test before timing: 85 mics fastest RTT

Experiment size: 20000
--------------------- Blocking (much faster) --------------------
Took Nanos=3592959723
Avg Nanos=179647
Avg MICS=179
Took millis=3593, count=20000
Per milli=5, count=20000
Avg correlated mics=176.22431210000002
Min correlated mics=85

5-1-2023: Direct buffer for Netty Server builder.

// Direct Executor makes sense, single threaded
nettyServerBuilder.directExecutor();

Results

Do request
--------------------- ASYNC (SLOW) --------------------
Time start is=603477950899571
Time start is=603477954966309
Took Nanos=569902522
Avg Nanos=56990
Avg MICS=56
Took millis=570, count=10000
Per milli=17, count=10000
Avg correlated mics=423086.8204344
Min correlated mics=317177
--------------------- Blocking (much faster) --------------------
Avg correlated mics=255.4281925
Min correlated mics=95
Took Nanos=2577476401
Avg Nanos=257747
Avg MICS=257
Took millis=2578, count=10000
Per milli=3, count=10000
Avg correlated mics=255.4281925
Min correlated mics=95

Native netty EPoll and optimizations

Note the 96 mics round trip with native optimizations of Netty enabled

Do request
--------------------- ASYNC (SLOW) --------------------
Time start is=599881585434974
Time start is=599881590673273
Took Nanos=764797972
Avg Nanos=76479
Avg MICS=76
Took millis=765, count=10000
Per milli=13, count=10000
Avg correlated mics=561713.8192574
Min correlated mics=298884
--------------------- Blocking (much faster) --------------------
Avg correlated mics=292.2020981
Min correlated mics=96
Took Nanos=2955947193
Avg Nanos=295594
Avg MICS=295
Took millis=2956, count=10000
Per milli=3, count=10000
Avg correlated mics=292.2020981
Min correlated mics=96

Baseline from non-native optimizations, Async and Blocking

Do request
--------------------- ASYNC (SLOW) --------------------
Time start is=590576141969679
Time start is=590576147185038
Time is=590576808494172
Took Nanos=677865191
Avg Nanos=67786
Avg MICS=67
Took millis=678, count=10000
Per milli=14, count=10000
Avg correlated mics=505870.2026173
Min correlated mics=287718
--------------------- Blocking (much faster) --------------------
Avg correlated mics=280.41398719999995
Min correlated mics=131
Took Nanos=2838105322
Avg Nanos=283810
Avg MICS=283
Took millis=2839, count=10000
Per milli=3, count=10000
Avg correlated mics=280.41398719999995
Min correlated mics=131

16 bytes - size the byte buffers

Do request
--------------------- ASYNC (SLOW) --------------------
Time start is=591205360875710
Time start is=591205366438454
Time is=591206123141821
Took Nanos=774331130
Avg Nanos=77433
Avg MICS=77
Took millis=775, count=10000
Per milli=12, count=10000
Avg correlated mics=567287.7477381
Min correlated mics=308461
--------------------- Blocking (much faster) --------------------
Avg correlated mics=285.82817239999997
Min correlated mics=110
Took Nanos=2892140401
Avg Nanos=289214
Avg MICS=289
Took millis=2893, count=10000
Per milli=3, count=10000
Avg correlated mics=285.82817239999997
Min correlated mics=110

Size the byte buffer: 32 bytes

Do request
--------------------- ASYNC (SLOW) --------------------
Time start is=591404902491986
Time start is=591404907800667
Time is=591405827873307
Took Nanos=936734895
Avg Nanos=93673
Avg MICS=93
Took millis=937, count=10000
Per milli=10, count=10000
Avg correlated mics=636139.5798999
Min correlated mics=363552
--------------------- Blocking (much faster) --------------------
Avg correlated mics=274.1003606
Min correlated mics=108
Took Nanos=2768569903
Avg Nanos=276856
Avg MICS=276
Took millis=2769, count=10000
Per milli=3, count=10000
Avg correlated mics=274.1003606
Min correlated mics=108