pitrou commented on pull request #10487:
URL: https://github.com/apache/arrow/pull/10487#issuecomment-870773753
There are more regressions with gcc 9, though:
```
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Non-regressions: (2)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
benchmark baseline contender change %
counters
ArrayArrayKernel<KleeneAnd>/524288/1 2.149 GiB/sec 2.318 GiB/sec 7.887
{'run_name': 'ArrayArrayKernel<KleeneAnd>/524288/1', 'repetitions': 0,
'repetition_index': 0, 'threads': 1, 'iterations': 3713, 'null_percent': 100.0}
ArrayArrayKernel<KleeneAnd>/524288/2 2.249 GiB/sec 2.262 GiB/sec 0.569
{'run_name': 'ArrayArrayKernel<KleeneAnd>/524288/2', 'repetitions': 0,
'repetition_index': 0, 'threads': 1, 'iterations': 4816, 'null_percent': 50.0}
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Regressions: (10)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
benchmark baseline contender
change %
counters
ArrayArrayKernel<KleeneAnd>/32768/0 7.645 GiB/sec 6.972 GiB/sec
-8.804 {'run_name': 'ArrayArrayKernel<KleeneAnd>/32768/0', 'repetitions':
0, 'repetition_index': 0, 'threads': 1, 'iterations': 178864, 'null_percent':
0.0}
ArrayArrayKernel<KleeneAnd>/524288/0 16.468 GiB/sec 13.337 GiB/sec
-19.014 {'run_name': 'ArrayArrayKernel<KleeneAnd>/524288/0', 'repetitions':
0, 'repetition_index': 0, 'threads': 1, 'iterations': 22855, 'null_percent':
0.0}
ArrayArrayKernel<KleeneAnd>/524288/10 2.801 GiB/sec 2.040 GiB/sec
-27.172 {'run_name': 'ArrayArrayKernel<KleeneAnd>/524288/10', 'repetitions':
0, 'repetition_index': 0, 'threads': 1, 'iterations': 4221, 'null_percent':
10.0}
ArrayArrayKernel<KleeneAnd>/524288/100 2.984 GiB/sec 2.147 GiB/sec
-28.031 {'run_name': 'ArrayArrayKernel<KleeneAnd>/524288/100',
'repetitions': 0, 'repetition_index': 0, 'threads': 1, 'iterations': 5191,
'null_percent': 1.0}
ArrayArrayKernel<KleeneAnd>/524288/10000 3.224 GiB/sec 2.250 GiB/sec
-30.221 {'run_name': 'ArrayArrayKernel<KleeneAnd>/524288/10000', 'repetitions':
0, 'repetition_index': 0, 'threads': 1, 'iterations': 5014, 'null_percent':
0.01}
ArrayArrayKernel<KleeneAnd>/32768/10 2.991 GiB/sec 1.970 GiB/sec
-34.143 {'run_name': 'ArrayArrayKernel<KleeneAnd>/32768/10', 'repetitions':
0, 'repetition_index': 0, 'threads': 1, 'iterations': 68647, 'null_percent':
10.0}
ArrayArrayKernel<KleeneAnd>/32768/10000 2.991 GiB/sec 1.964 GiB/sec
-34.335 {'run_name': 'ArrayArrayKernel<KleeneAnd>/32768/10000', 'repetitions':
0, 'repetition_index': 0, 'threads': 1, 'iterations': 68084, 'null_percent':
0.01}
ArrayArrayKernel<KleeneAnd>/32768/2 2.999 GiB/sec 1.969 GiB/sec
-34.335 {'run_name': 'ArrayArrayKernel<KleeneAnd>/32768/2', 'repetitions':
0, 'repetition_index': 0, 'threads': 1, 'iterations': 68549, 'null_percent':
50.0}
ArrayArrayKernel<KleeneAnd>/32768/1 2.997 GiB/sec 1.966 GiB/sec
-34.402 {'run_name': 'ArrayArrayKernel<KleeneAnd>/32768/1', 'repetitions':
0, 'repetition_index': 0, 'threads': 1, 'iterations': 68530, 'null_percent':
100.0}
ArrayArrayKernel<KleeneAnd>/32768/100 3.000 GiB/sec 1.967 GiB/sec
-34.414 {'run_name': 'ArrayArrayKernel<KleeneAnd>/32768/100', 'repetitions':
0, 'repetition_index': 0, 'threads': 1, 'iterations': 68686, 'null_percent':
1.0}
```
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