pitrou commented on pull request #10009:
URL: https://github.com/apache/arrow/pull/10009#issuecomment-818855204
Benchmarks on Zen 2, clang 10.
```
----------------------------------------------------------------------------------------------
Non-regressions: (44)
----------------------------------------------------------------------------------------------
benchmark baseline contender
change % counters
ModeKernelNarrow<Int64Type>/1048576/10000 1.344 GiB/sec 3.077 GiB/sec
129.033 {}
ModeKernelWide<FloatType>/1048576/0 26.692 MiB/sec 60.554 MiB/sec
126.860 {}
ModeKernelWide<FloatType>/1048576/100 26.720 MiB/sec 60.031 MiB/sec
124.667 {}
ModeKernelWide<FloatType>/1048576/10000 26.707 MiB/sec 59.770 MiB/sec
123.799 {}
ModeKernelWide<Int32Type>/1048576/0 35.031 MiB/sec 77.918 MiB/sec
122.426 {}
ModeKernelNarrow<Int64Type>/1048576/0 1.399 GiB/sec 3.091 GiB/sec
120.934 {}
ModeKernelWide<Int32Type>/1048576/10000 34.942 MiB/sec 77.128 MiB/sec
120.729 {}
ModeKernelWide<DoubleType>/1048576/100 57.929 MiB/sec 127.702 MiB/sec
120.447 {}
ModeKernelNarrow<Int64Type>/1048576/100 1.328 GiB/sec 2.874 GiB/sec
116.482 {}
ModeKernelWide<DoubleType>/1048576/10000 58.316 MiB/sec 125.540 MiB/sec
115.276 {}
ModeKernelWide<DoubleType>/1048576/0 58.070 MiB/sec 122.623 MiB/sec
111.164 {}
ModeKernelWide<FloatType>/1048576/2 55.623 MiB/sec 117.360 MiB/sec
110.994 {}
ModeKernelWide<DoubleType>/1048576/2 116.593 MiB/sec 243.300 MiB/sec
108.675 {}
ModeKernelWide<Int64Type>/1048576/100 79.077 MiB/sec 162.463 MiB/sec
105.449 {}
ModeKernelWide<Int64Type>/1048576/10000 78.890 MiB/sec 158.923 MiB/sec
101.450 {}
ModeKernelNarrow<Int64Type>/1048576/10 994.277 MiB/sec 1.895 GiB/sec
95.196 {}
ModeKernelWide<Int32Type>/1048576/2 70.771 MiB/sec 136.449 MiB/sec
92.804 {}
ModeKernelWide<Int64Type>/1048576/0 79.140 MiB/sec 150.926 MiB/sec
90.709 {}
ModeKernelWide<DoubleType>/1048576/10 72.236 MiB/sec 136.781 MiB/sec
89.354 {}
ModeKernelWide<Int64Type>/1048576/2 149.834 MiB/sec 282.411 MiB/sec
88.482 {}
ModeKernelWide<FloatType>/1048576/10 34.595 MiB/sec 65.197 MiB/sec
88.457 {}
ModeKernelWide<Int32Type>/1048576/10 44.789 MiB/sec 82.908 MiB/sec
85.107 {}
ModeKernelWide<Int32Type>/1048576/100 41.497 MiB/sec 76.746 MiB/sec
84.946 {}
ModeKernelNarrow<Int64Type>/1048576/2 799.410 MiB/sec 1.407 GiB/sec
80.226 {}
ModeKernelWide<Int64Type>/1048576/10 94.448 MiB/sec 168.857 MiB/sec
78.782 {}
ModeKernelNarrow<Int32Type>/1048576/0 1.099 GiB/sec 1.709 GiB/sec
55.441 {}
ModeKernelNarrow<Int32Type>/1048576/10 700.749 MiB/sec 1.059 GiB/sec
54.802 {}
ModeKernelNarrow<Int32Type>/1048576/2 500.474 MiB/sec 727.773 MiB/sec
45.417 {}
ModeKernelNarrow<Int32Type>/1048576/100 1.083 GiB/sec 1.529 GiB/sec
41.151 {}
ModeKernelNarrow<Int32Type>/1048576/10000 1.258 GiB/sec 1.658 GiB/sec
31.790 {}
ModeKernelNarrow<Int8Type>/1048576/1 504.487 GiB/sec 625.852 GiB/sec
24.057 {}
ModeKernelWide<Int32Type>/1048576/1 584.030 GiB/sec 704.471 GiB/sec
20.622 {}
ModeKernelNarrow<Int32Type>/1048576/1 595.824 GiB/sec 712.818 GiB/sec
19.636 {}
ModeKernelNarrow<Int64Type>/1048576/1 597.643 GiB/sec 707.585 GiB/sec
18.396 {}
ModeKernelWide<FloatType>/1048576/1 582.116 GiB/sec 679.811 GiB/sec
16.783 {}
ModeKernelWide<DoubleType>/1048576/1 583.923 GiB/sec 674.269 GiB/sec
15.472 {}
ModeKernelWide<Int64Type>/1048576/1 590.544 GiB/sec 678.023 GiB/sec
14.813 {}
ModeKernelNarrow<BooleanType>/1048576/1 593.884 GiB/sec 648.047 GiB/sec
9.120 {}
ModeKernelNarrow<BooleanType>/1048576/0 36.364 GiB/sec 38.774 GiB/sec
6.626 {}
ModeKernelNarrow<Int8Type>/1048576/2 366.079 MiB/sec 378.478 MiB/sec
3.387 {}
ModeKernelNarrow<BooleanType>/1048576/10 2.393 GiB/sec 2.412 GiB/sec
0.784 {}
ModeKernelNarrow<BooleanType>/1048576/10000 2.392 GiB/sec 2.395 GiB/sec
0.115 {}
ModeKernelNarrow<BooleanType>/1048576/2 2.393 GiB/sec 2.391 GiB/sec
-0.071 {}
ModeKernelNarrow<BooleanType>/1048576/100 2.395 GiB/sec 2.369 GiB/sec
-1.084 {}
-------------------------------------------------------------------------------------------
Regressions: (4)
-------------------------------------------------------------------------------------------
benchmark baseline contender
change % counters
ModeKernelNarrow<Int8Type>/1048576/0 517.607 MiB/sec 477.913 MiB/sec
-7.669 {}
ModeKernelNarrow<Int8Type>/1048576/10000 597.905 MiB/sec 473.417 MiB/sec
-20.821 {}
ModeKernelNarrow<Int8Type>/1048576/10 616.529 MiB/sec 486.274 MiB/sec
-21.127 {}
ModeKernelNarrow<Int8Type>/1048576/100 652.528 MiB/sec 478.726 MiB/sec
-26.635 {}
```
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