mapleFU commented on issue #40845:
URL: https://github.com/apache/arrow/issues/40845#issuecomment-2041444182
After adding `__restrict__` to function, it grows a bit faster( but also not
high)
```
ReadLevels_Rle/MaxLevel:1/NumLevels:8096/BatchSize:1024/LevelRepeatCount:1
2387 ns 2386 ns 292939 bytes_per_second=6.32071G/s
items_per_second=3.39341G/s
ReadLevels_Rle/MaxLevel:1/NumLevels:8096/BatchSize:1024/LevelRepeatCount:7
8246 ns 8215 ns 86704 bytes_per_second=1.8356G/s
items_per_second=985.479M/s
ReadLevels_Rle/MaxLevel:1/NumLevels:8096/BatchSize:1024/LevelRepeatCount:1024
1160 ns 1134 ns 607143 bytes_per_second=13.294G/s
items_per_second=7.13718G/s
ReadLevels_Rle/MaxLevel:1/NumLevels:8096/BatchSize:2048/LevelRepeatCount:1
1939 ns 1942 ns 360373 bytes_per_second=7.76322G/s
items_per_second=4.16785G/s
ReadLevels_Rle/MaxLevel:3/NumLevels:8096/BatchSize:1024/LevelRepeatCount:1
2040 ns 2037 ns 345828 bytes_per_second=7.40175G/s
items_per_second=3.97378G/s
ReadLevels_Rle/MaxLevel:3/NumLevels:8096/BatchSize:2048/LevelRepeatCount:1
1980 ns 1983 ns 348470 bytes_per_second=7.60651G/s
items_per_second=4.08371G/s
ReadLevels_Rle/MaxLevel:3/NumLevels:8096/BatchSize:1024/LevelRepeatCount:7
6990 ns 6980 ns 102252 bytes_per_second=2.16034G/s
items_per_second=1.15983G/s
ReadLevels_BitPack/MaxLevel:1/NumLevels:8096/BatchSize:1024/LevelRepeatCount:1
1426 ns 1429 ns 491245 bytes_per_second=10.5547G/s
items_per_second=5.66653G/s
ReadLevels_BitPack/MaxLevel:1/NumLevels:8096/BatchSize:1024/LevelRepeatCount:7
1419 ns 1423 ns 489220 bytes_per_second=10.5941G/s
items_per_second=5.68766G/s
ReadLevels_BitPack/MaxLevel:1/NumLevels:8096/BatchSize:1024/LevelRepeatCount:1024
1429 ns 1433 ns 489309 bytes_per_second=10.5259G/s
items_per_second=5.65103G/s
ReadLevels_BitPack/MaxLevel:1/NumLevels:8096/BatchSize:2048/LevelRepeatCount:1
1429 ns 1431 ns 493124 bytes_per_second=10.5379G/s
items_per_second=5.65749G/s
ReadLevels_BitPack/MaxLevel:3/NumLevels:8096/BatchSize:1024/LevelRepeatCount:1
1787 ns 1789 ns 367279 bytes_per_second=8.42841G/s
items_per_second=4.52497G/s
ReadLevels_BitPack/MaxLevel:3/NumLevels:8096/BatchSize:2048/LevelRepeatCount:1
1760 ns 1764 ns 394862 bytes_per_second=8.54821G/s
items_per_second=4.58928G/s
ReadLevels_BitPack/MaxLevel:3/NumLevels:8096/BatchSize:1024/LevelRepeatCount:7
1807 ns 1808 ns 390261 bytes_per_second=8.34108G/s
items_per_second=4.47808G/s
```
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