gf2121 commented on PR #14361:
URL: https://github.com/apache/lucene/pull/14361#issuecomment-2729280384
OK i get expected results that multiple of 16 faster than multiple of 8 when
i force `-XX:UseAVX=3`, it can be seen AVX3 is slower on this chip, that may be
why java disabled it by default.
```
Benchmark Mode Cnt Score
Error Units
Decode21Benchmark.decode21Scalar thrpt 5 28.375
? 0.064 ops/ms
Decode21Benchmark.decode21Scalar:asm thrpt NaN
---
Decode21Benchmark.decode21Vector thrpt 5 41.844
? 0.182 ops/ms
Decode21Benchmark.decode21Vector:asm thrpt NaN
---
Decode21Benchmark.decode21VectorFloorToMultipleOf16 thrpt 5 64.471
? 0.218 ops/ms
Decode21Benchmark.decode21VectorFloorToMultipleOf16:asm thrpt NaN
---
Decode21Benchmark.decode21VectorFloorToMultipleOf8 thrpt 5 39.665
? 0.120 ops/ms
Decode21Benchmark.decode21VectorFloorToMultipleOf8:asm thrpt NaN
---
```
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