cyb70289 commented on pull request #7542:
URL: https://github.com/apache/arrow/pull/7542#issuecomment-649426603
**gcc-7.5, Intel Gold 5218**
```
benchmark baseline
contender change %
9 SortToIndicesInt64Count/32768/10/min_time:1.000 391.232 MiB/sec
945.147 MiB/sec 141.582 {'null_percent': 10.0}
3 SortToIndicesInt64Count/32768/2/min_time:1.000 336.469 MiB/sec
617.053 MiB/sec 83.391 {'null_percent': 50.0}
13 SortToIndicesInt64Count/32768/100/min_time:1.000 539.575 MiB/sec
945.134 MiB/sec 75.163,{'null_percent': 1.0}
14 SortToIndicesInt64Count/32768/0/min_time:1.000 912.462 MiB/sec
1.061 GiB/sec 19.020,{'null_percent': 0.0}
12 SortToIndicesInt64Count/32768/10000/min_time:1.000 874.597 MiB/sec
948.007 MiB/sec 8.394 {'null_percent': 0.01}
0 SortToIndicesInt64Compare/32768/10/min_time:1.000 124.299 MiB/sec
133.614 MiB/sec 7.494 {'null_percent': 10.0}
4 SortToIndicesInt64Count/32768/1/min_time:1.000 4.212 GiB/sec
4.441 GiB/sec 5.455 {'null_percent': 100.0}
1 SortToIndicesInt64Compare/1048576/1/min_time:1.000 4.168 GiB/sec
4.380 GiB/sec 5.103 {'null_percent': 100.0}
6 SortToIndicesInt64Compare/32768/1/min_time:1.000 4.263 GiB/sec
4.428 GiB/sec 3.885 {'null_percent': 100.0}
8 SortToIndicesInt64Compare/32768/100/min_time:1.000 121.535 MiB/sec
126.154 MiB/sec 3.800 {'null_percent': 1.0}
11 SortToIndicesInt64Compare/8388608/1/min_time:1.000 3.833 GiB/sec
3.939 GiB/sec 2.746 {'null_percent': 100.0}
15 SortToIndicesInt64Count/1048576/1/min_time:1.000 4.189 GiB/sec
4.280 GiB/sec 2.175 {'null_percent': 100.0}
10 SortToIndicesInt64Compare/32768/0/min_time:1.000 127.065 MiB/sec
129.514 MiB/sec 1.927 {'null_percent': 0.0}
2 SortToIndicesInt64Compare/32768/2/min_time:1.000 211.863 MiB/sec
212.384 MiB/sec 0.246 {'null_percent': 50.0}
7 SortToIndicesInt64Count/8388608/1/min_time:1.000 3.881 GiB/sec
3.877 GiB/sec -0.117 {'null_percent': 100.0}
5 SortToIndicesInt64Compare/32768/10000/min_time:1.000 124.847 MiB/sec
123.486 MiB/sec -1.090 {'null_percent': 0.01}
```
**clang-9, Intel Gold 5218**
```
benchmark baseline
contender change %
4 SortToIndicesInt64Count/32768/10/min_time:1.000 419.179 MiB/sec
1019.007 MiB/sec 143.096 {'null_percent': 10.0}
8 SortToIndicesInt64Count/32768/2/min_time:1.000 355.481 MiB/sec
658.370 MiB/sec 85.206 {'null_percent': 50.0}
5 SortToIndicesInt64Count/32768/100/min_time:1.000 574.780 MiB/sec
1.018 GiB/sec 81.451 {'null_percent': 1.0}
2 SortToIndicesInt64Count/32768/0/min_time:1.000 980.677 MiB/sec
1.137 GiB/sec 18.725 {'null_percent': 0.0}
15 SortToIndicesInt64Count/32768/10000/min_time:1.000 939.165 MiB/sec
1.023 GiB/sec 11.535 {'null_percent': 0.01}
13 SortToIndicesInt64Compare/32768/10/min_time:1.000 137.920 MiB/sec
152.108 MiB/sec 10.288 {'null_percent': 10.0}
10 SortToIndicesInt64Compare/32768/2/min_time:1.000 221.024 MiB/sec
243.047 MiB/sec 9.964 {'null_percent': 50.0}
3 SortToIndicesInt64Compare/32768/100/min_time:1.000 132.173 MiB/sec
141.416 MiB/sec 6.993 {'null_percent': 1.0}
12 SortToIndicesInt64Compare/32768/0/min_time:1.000 141.528 MiB/sec
148.206 MiB/sec 4.719 {'null_percent': 0.0}
7 SortToIndicesInt64Compare/32768/10000/min_time:1.000 135.794 MiB/sec
140.914 MiB/sec 3.770 {'null_percent': 0.01}
9 SortToIndicesInt64Count/8388608/1/min_time:1.000 3.683 GiB/sec
3.698 GiB/sec 0.421 {'null_percent': 100.0}
1 SortToIndicesInt64Compare/8388608/1/min_time:1.000 3.694 GiB/sec
3.651 GiB/sec -1.159 {'null_percent': 100.0}
0 SortToIndicesInt64Compare/1048576/1/min_time:1.000 3.999 GiB/sec
3.951 GiB/sec -1.198 {'null_percent': 100.0}
6 SortToIndicesInt64Count/1048576/1/min_time:1.000 3.999 GiB/sec
3.949 GiB/sec -1.236 {'null_percent': 100.0}
11 SortToIndicesInt64Count/32768/1/min_time:1.000 4.096 GiB/sec
4.042 GiB/sec -1.324 {'null_percent': 100.0}
14 SortToIndicesInt64Compare/32768/1/min_time:1.000 4.129 GiB/sec
4.018 GiB/sec -2.686 {'null_percent': 100.0}
```
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