luyuncheng commented on PR #11987:
URL: https://github.com/apache/lucene/pull/11987#issuecomment-1332336907

   > are you able to report the retrieval time as well? 
   
   runStoredFieldsBenchmark.py 
   |    retrieved_time_msec   | Baseline | Candidate     |
   | :---        |    :----:   |          ---: |
   | BEST_SPEED      |  260.71       | 283.29  |
   | BEST_COMPRESSION   | 2586.35        | 2553.10  |
   
   >  if we create too much pressure on GC for unoptimized merges.
   
   I will do this benchmark.
   
   >  we may want to explicitly supply smaller heap
   
   We have been met a situation: a es node with max_shards_per_node default 
1000, and normally one shard with 40 segments,  one buffer with retained heap: 
100KB, so this would use 4G resident heap memory. 
   i think with smaller heap, this PR would cause more frequent GC when segment 
number is not big to influent the resident heap.


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