mapleFU commented on issue #34536:
URL: https://github.com/apache/arrow/issues/34536#issuecomment-1474873350
On My M1 MacOS:
Current ( BlockSize: 128, BlockCnt: 4)
```
BM_DeltaBitPackingDecode_Int64_Fixed/1024 13582 ns 13525 ns
51456 bytes_per_second=577.645M/s items_per_second=75.7131M/s
BM_DeltaBitPackingDecode_Int64_Fixed/4096 52663 ns 52510 ns
13405 bytes_per_second=595.123M/s items_per_second=78.0039M/s
BM_DeltaBitPackingDecode_Int64_Fixed/32768 415123 ns 414050 ns
1676 bytes_per_second=603.793M/s items_per_second=79.1403M/s
BM_DeltaBitPackingDecode_Int64_Fixed/65536 855424 ns 836675 ns
843 bytes_per_second=597.604M/s items_per_second=78.3291M/s
BM_DeltaBitPackingDecode_Int64_Narrow/1024 5906 ns 5831 ns
123092 bytes_per_second=1.30833G/s items_per_second=175.6M/s
BM_DeltaBitPackingDecode_Int64_Narrow/4096 21125 ns 21035 ns
32590 bytes_per_second=1.4508G/s items_per_second=194.723M/s
BM_DeltaBitPackingDecode_Int64_Narrow/32768 163213 ns 162927 ns
4316 bytes_per_second=1.49847G/s items_per_second=201.121M/s
BM_DeltaBitPackingDecode_Int64_Narrow/65536 333152 ns 327162 ns
2155 bytes_per_second=1.49248G/s items_per_second=200.317M/s
BM_DeltaBitPackingDecode_Int64_Wide/1024 6933 ns 6912 ns
101821 bytes_per_second=1.10379G/s items_per_second=148.149M/s
BM_DeltaBitPackingDecode_Int64_Wide/4096 25010 ns 24927 ns
27997 bytes_per_second=1.22428G/s items_per_second=164.32M/s
BM_DeltaBitPackingDecode_Int64_Wide/32768 197694 ns 195819 ns
3572 bytes_per_second=1.24677G/s items_per_second=167.339M/s
BM_DeltaBitPackingDecode_Int64_Wide/65536 386595 ns 386369 ns
1795 bytes_per_second=1.26377G/s items_per_second=169.62M/s
```
After (BlockSize: 256, BlockCnt: 4)
```
BM_DeltaBitPackingDecode_Int64_Fixed/1024 9901 ns 9886 ns
70292 bytes_per_second=790.285M/s items_per_second=103.584M/s
BM_DeltaBitPackingDecode_Int64_Fixed/4096 37284 ns 37213 ns
18831 bytes_per_second=839.771M/s items_per_second=110.07M/s
BM_DeltaBitPackingDecode_Int64_Fixed/32768 305428 ns 298120 ns
2386 bytes_per_second=838.589M/s items_per_second=109.916M/s
BM_DeltaBitPackingDecode_Int64_Fixed/65536 597997 ns 594524 ns
1171 bytes_per_second=841.008M/s items_per_second=110.233M/s
BM_DeltaBitPackingDecode_Int64_Narrow/1024 4738 ns 4736 ns
147537 bytes_per_second=1.61106G/s items_per_second=216.233M/s
BM_DeltaBitPackingDecode_Int64_Narrow/4096 16861 ns 16857 ns
41654 bytes_per_second=1.8104G/s items_per_second=242.987M/s
BM_DeltaBitPackingDecode_Int64_Narrow/32768 130294 ns 130280 ns
5395 bytes_per_second=1.87397G/s items_per_second=251.52M/s
BM_DeltaBitPackingDecode_Int64_Narrow/65536 259451 ns 259450 ns
2695 bytes_per_second=1.88198G/s items_per_second=252.595M/s
BM_DeltaBitPackingDecode_Int64_Wide/1024 5335 ns 5334 ns
131512 bytes_per_second=1.43021G/s items_per_second=191.96M/s
BM_DeltaBitPackingDecode_Int64_Wide/4096 18847 ns 18846 ns
37204 bytes_per_second=1.61932G/s items_per_second=217.342M/s
BM_DeltaBitPackingDecode_Int64_Wide/32768 145769 ns 145764 ns
4815 bytes_per_second=1.67491G/s items_per_second=224.802M/s
BM_DeltaBitPackingDecode_Int64_Wide/65536 289912 ns 289889 ns
2413 bytes_per_second=1.68438G/s items_per_second=226.073M/s
```
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