benwtrent commented on issue #13768:
URL: https://github.com/apache/lucene/issues/13768#issuecomment-2344070572

   I agree, this is worth digging into. In my benchmarking, `compressed=true` 
ended up being even marginally faster than `compressed=false`, but I didn't 
know why :/ which is why I was hesitant to remove the option before.
   
   It would be good to benchmark this with and without panamavector enabled 
over intel & arm. 
   
   Note, there has been work to move all quantized comparisons off-heap: 
https://github.com/apache/lucene/pull/13497 the results of which may or may not 
effect this decision (bytes no longer being copied on heap, thus the fewer 
bytes being copied no longer harm/help performance). But, I kept having weird 
slow downs that I cannot figure out and nobody else can replicate 
(@ChrisHegarty has tried and couldn't see why I keep seeing significant slow 
downs given different JDK versions).


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