AntoinePrv commented on PR #49756:
URL: https://github.com/apache/arrow/pull/49756#issuecomment-4305497305

   @pitrou here are some benchmarks in the [0, 500] num of integer to unpack 
that Arrow is operating over.
   - SVE128: 
[linux-arm64-graviton4.pdf](https://github.com/user-attachments/files/27016293/linux-arm64-graviton4.pdf)
   - SVE256: 
[linux-arm64-graviton3.pdf](https://github.com/user-attachments/files/27016255/linux-arm64-graviton3.pdf)
   
   As before, we can sometimes be much penalized by small sizes.
   Surprisingly (annoyingly?) there are some bit width numbers (e.g. 3, 5, 6, 7 
on SVE256) where the world is upside down: scalar does best, then Neon, then 
SVE (in the [0, 500] range, it does not hold for larger input buffers).
   


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