gsmiller commented on PR #777:
URL: https://github.com/apache/lucene/pull/777#issuecomment-1122652678

   > just an observation, this is a large amount of code changes for 
performance change that may be in the noise? I'm a bit confused.
   
   I don't think we actually have benchmarks for this functionality yet. A 
little while back, @Yuti-G added new functionality for `getTopDims` 
([LUCENE-10325](https://issues.apache.org/jira/browse/LUCENE-10325))that, by 
default, just delegates to `getAllDims` and truncates. This is an attempt to 
make `getTopDims` more efficient, but I think we're missing benchmarks to 
actually measure that. Is that accurate @Yuti-G, or did you add some new 
benchmarks that I'm unaware of? Maybe I'm missing that.


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