enhance: add multiply factor when loading index

[chyezh]

issue: #38715
pr: #38716

[mergify]

@chyezh go-sdk check failed, comment rerun go-sdk can trigger the job again.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.06%. Comparing base (9113090) to head (5751a6e).
Report is 2 commits behind head on 2.5.

Additional details and impacted files

@@            Coverage Diff             @@
##              2.5   #38722      +/-   ##
==========================================
- Coverage   81.06%   81.06%   -0.01%     
==========================================
  Files        1381     1381              
  Lines      195103   195113      +10     
==========================================
+ Hits       158156   158164       +8     
- Misses      31390    31394       +4     
+ Partials     5557     5555       -2     

Components	Coverage Δ
Client	78.26% <ø> (ø)
Core	69.33% <ø> (-0.02%)	⬇️
Go	83.05% <100.00%> (+<0.01%)	⬆️

Files with missing lines	Coverage Δ
internal/querynodev2/segments/segment.go	64.30% <100.00%> (+0.03%)	⬆️
pkg/util/paramtable/component_param.go	98.38% <100.00%> (+<0.01%)	⬆️

... and 34 files with indirect coverage changes

[chyezh]

rerun go-sdk

[chyezh]

rerun ut

[tedxu]

/lgtm

[xiaofan-luan]

/lgtm
/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chyezh, xiaofan-luan

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• configs/OWNERS [xiaofan-luan]
• internal/querynodev2/segments/OWNERS [xiaofan-luan]
• pkg/util/OWNERS [xiaofan-luan]

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