mapleFU commented on issue #39227:
URL: https://github.com/apache/arrow/issues/39227#issuecomment-1975256603

   I've testing it with Intel Xeon:
   
   BMI2 unpack8:
   
   ```
   Load Average: 0.87, 3.85, 3.34
   
----------------------------------------------------------------------------------------
   Benchmark                              Time             CPU   Iterations 
UserCounters...
   
----------------------------------------------------------------------------------------
   BM_PlainDecodingBoolean/1024         142 ns          141 ns      4948292 
bytes_per_second=6.74001Gi/s
   BM_PlainDecodingBoolean/4096         343 ns          343 ns      2037558 
bytes_per_second=11.1335Gi/s
   BM_PlainDecodingBoolean/32768       2090 ns         2090 ns       334798 
bytes_per_second=14.5993Gi/s
   BM_PlainDecodingBoolean/65536       4120 ns         4120 ns       172542 
bytes_per_second=14.8152Gi/s
   ```
   
   Current code:
   
   ```
   
----------------------------------------------------------------------------------------
   Benchmark                              Time             CPU   Iterations 
UserCounters...
   
----------------------------------------------------------------------------------------
   BM_PlainDecodingBoolean/1024         575 ns          575 ns      1220486 
bytes_per_second=1.65757Gi/s
   BM_PlainDecodingBoolean/4096        2056 ns         2056 ns       340757 
bytes_per_second=1.85583Gi/s
   BM_PlainDecodingBoolean/32768      15953 ns        15952 ns        43986 
bytes_per_second=1.91309Gi/s
   BM_PlainDecodingBoolean/65536      31741 ns        31739 ns        21954 
bytes_per_second=1.923Gi/s
   ```


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