Optimize benchmark for SCANN & HNSW

[cydrain]

No description provided.

[sre-ci-robot]

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[mergify]

@cydrain 🔍 Important: PR Classification Needed!

For efficient project management and a seamless review process, it's essential to classify your PR correctly. Here's how:

1. If you're fixing a bug, label it as kind/bug.
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.03%. Comparing base (3c46f4c) to head (c3b9616).
Report is 280 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##           main    #1010       +/-   ##
=========================================
+ Coverage      0   74.03%   +74.03%     
=========================================
  Files         0       82       +82     
  Lines         0     6960     +6960     
=========================================
+ Hits          0     5153     +5153     
- Misses        0     1807     +1807     

see 82 files with indirect coverage changes

[cydrain]

/kind improvement

[alexanderguzhva]

/lgtm