rmuir commented on PR #15341:
URL: https://github.com/apache/lucene/pull/15341#issuecomment-3424684996

   Just as a general comment around this performance: the 256-bit SVE vectors 
available on these processors have unfortunately not had a lot of love from our 
side.
   
   Lots of digging into the 128-bit neons on the mac and the various AVX on 
intel, but not much yet on the SVE.
   
   I also think they are in early stages on the java side: I see a lot of mail 
traffic making improvements to these vectors in the OpenJDK, especially that 
might impact the integer side (e.g. compress). Might even be worth trying to 
build snapshot of JDK.
   
   <img width="1516" height="916" alt="Screen_Shot_2025-10-21_at_01 03 49" 
src="https://github.com/user-attachments/assets/a29104a3-3df6-4c0c-b44d-eb326345889b";
 />
   


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