stefanvodita commented on PR #12844:
URL: https://github.com/apache/lucene/pull/12844#issuecomment-1836064137

   I did 5 benchmark runs for 4 configurations. To avoid making this comment 
way too large, I'll just report the averages across the 5 runs per 
configuration.
   It looks like there are some genuine differences between the baseline and 
cadidate, but I'm not sure the differences between different candidate 
configurations are significant. How do we trade off between the extra 
miliseconds and the memory savings?
   
   ```
   baseline
   recall  latency nDoc    fanout  maxConn beamWidth       visited index ms
   0.720    0.16   10000   0       64      250     100     2502    1.00    
post-filter
   0.542    0.23   100000  0       64      250     100     43624   1.00    
post-filter
   0.512    0.28   200000  0       64      250     100     111019  1.00    
post-filter
   
   candidate with INITIAL_CAPACITY == 10
   recall  latency nDoc    fanout  maxConn beamWidth       visited index ms
   0.720    0.16   10000   0       64      250     100     2498    1.00    
post-filter
   0.542    0.23   100000  0       64      250     100     45063   1.00    
post-filter
   0.512    0.28   200000  0       64      250     100     116683  1.00    
post-filter
   
   candidate with INITIAL_CAPACITY == 100
   recall  latency nDoc    fanout  maxConn beamWidth       visited index ms
   0.720    0.16   10000   0       64      250     100     2528    1.00    
post-filter
   0.542    0.23   100000  0       64      250     100     46055   1.00    
post-filter
   0.512    0.28   200000  0       64      250     100     115407  1.00    
post-filter
   
   candidate with INITIAL_CAPACITY == 1000
   recall  latency nDoc    fanout  maxConn beamWidth       visited index ms
   0.720    0.16   10000   0       64      250     100     2518    1.00    
post-filter
   0.542    0.23   100000  0       64      250     100     46617   1.00    
post-filter
   0.512    0.29   200000  0       64      250     100     118359  1.00    
post-filter
   ```


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