benibus commented on PR #36179:
URL: https://github.com/apache/arrow/pull/36179#issuecomment-1599134933
Local benchmark results (approx. best-case)
Before
```
-------------------------------------------------------------------------------------------------------
Benchmark Time CPU
Iterations UserCounters...
-------------------------------------------------------------------------------------------------------
TableSortIndicesInt64Narrow/1048576/100/1/32 367381664 ns 367357156 ns
2 chunks=32 columns=1 items_per_second=2.85438M/s null_percent=1
TableSortIndicesInt64Narrow/1048576/4/1/32 281608431 ns 281605789 ns
2 chunks=32 columns=1 items_per_second=3.72356M/s null_percent=25
TableSortIndicesInt64Narrow/1048576/0/1/32 354414823 ns 354413272 ns
2 chunks=32 columns=1 items_per_second=2.95863M/s null_percent=0
TableSortIndicesInt64Narrow/1048576/100/1/4 315257284 ns 315253535 ns
2 chunks=4 columns=1 items_per_second=3.32614M/s null_percent=1
TableSortIndicesInt64Narrow/1048576/4/1/4 240298213 ns 240291188 ns
3 chunks=4 columns=1 items_per_second=4.36377M/s null_percent=25
TableSortIndicesInt64Narrow/1048576/0/1/4 311795614 ns 311790481 ns
2 chunks=4 columns=1 items_per_second=3.36308M/s null_percent=0
TableSortIndicesInt64Narrow/1048576/100/1/1 282068938 ns 282067950 ns
2 chunks=1 columns=1 items_per_second=3.71746M/s null_percent=1
TableSortIndicesInt64Narrow/1048576/4/1/1 210222675 ns 210216608 ns
3 chunks=1 columns=1 items_per_second=4.98807M/s null_percent=25
TableSortIndicesInt64Narrow/1048576/0/1/1 281105329 ns 281101193 ns
2 chunks=1 columns=1 items_per_second=3.73024M/s null_percent=0
```
After
```
-------------------------------------------------------------------------------------------------------
Benchmark Time CPU
Iterations UserCounters...
-------------------------------------------------------------------------------------------------------
TableSortIndicesInt64Narrow/1048576/100/1/32 148802109 ns 148797635 ns
4 chunks=32 columns=1 items_per_second=7.04699M/s null_percent=1
TableSortIndicesInt64Narrow/1048576/4/1/32 125102993 ns 125100621 ns
6 chunks=32 columns=1 items_per_second=8.38186M/s null_percent=25
TableSortIndicesInt64Narrow/1048576/0/1/32 147291350 ns 147287710 ns
5 chunks=32 columns=1 items_per_second=7.11924M/s null_percent=0
TableSortIndicesInt64Narrow/1048576/100/1/4 72243393 ns 72241902 ns
10 chunks=4 columns=1 items_per_second=14.5148M/s null_percent=1
TableSortIndicesInt64Narrow/1048576/4/1/4 66780395 ns 66779462 ns
11 chunks=4 columns=1 items_per_second=15.7021M/s null_percent=25
TableSortIndicesInt64Narrow/1048576/0/1/4 70065128 ns 70063740 ns
10 chunks=4 columns=1 items_per_second=14.966M/s null_percent=0
TableSortIndicesInt64Narrow/1048576/100/1/1 19336900 ns 19335762 ns
36 chunks=1 columns=1 items_per_second=54.2299M/s null_percent=1
TableSortIndicesInt64Narrow/1048576/4/1/1 25458573 ns 25457697 ns
27 chunks=1 columns=1 items_per_second=41.189M/s null_percent=25
TableSortIndicesInt64Narrow/1048576/0/1/1 17580368 ns 17577897 ns
40 chunks=1 columns=1 items_per_second=59.6531M/s null_percent=0
```
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