pitrou commented on pull request #12504:
URL: https://github.com/apache/arrow/pull/12504#issuecomment-1054476608
On AMD Zen 2 with clang 10:
```
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Non-regressions: (20)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
benchmark baseline contender change %
counters
WriteCsvStringNoQuote/0 1.186 GiB/sec 2.460 GiB/sec 107.404
{'family_index': 1, 'per_family_instance_index': 0, 'run_name':
'WriteCsvStringNoQuote/0', 'repetitions': 3, 'repetition_index': 1, 'threads':
1, 'iterations': 2023, 'null_percent': 0.0}
WriteCsvStringNoQuote/1 1.120 GiB/sec 2.208 GiB/sec 97.052
{'family_index': 1, 'per_family_instance_index': 1, 'run_name':
'WriteCsvStringNoQuote/1', 'repetitions': 3, 'repetition_index': 2, 'threads':
1, 'iterations': 1929, 'null_percent': 1.0}
WriteCsvStringNoQuote/10 1015.117 MiB/sec 1.825 GiB/sec 84.119
{'family_index': 1, 'per_family_instance_index': 2, 'run_name':
'WriteCsvStringNoQuote/10', 'repetitions': 3, 'repetition_index': 1, 'threads':
1, 'iterations': 1863, 'null_percent': 10.0}
WriteCsvStringNoQuote/50 538.265 MiB/sec 723.203 MiB/sec 34.358
{'family_index': 1, 'per_family_instance_index': 3, 'run_name':
'WriteCsvStringNoQuote/50', 'repetitions': 3, 'repetition_index': 1, 'threads':
1, 'iterations': 1715, 'null_percent': 50.0}
WriteCsvNumericCheckQuote/0 319.270 MiB/sec 411.364 MiB/sec 28.845
{'family_index': 4, 'per_family_instance_index': 0, 'run_name':
'WriteCsvNumericCheckQuote/0', 'repetitions': 3, 'repetition_index': 0,
'threads': 1, 'iterations': 1021, 'null_percent': 0.0}
WriteCsvNumericCheckQuote/1 316.277 MiB/sec 389.813 MiB/sec 23.250
{'family_index': 4, 'per_family_instance_index': 1, 'run_name':
'WriteCsvNumericCheckQuote/1', 'repetitions': 3, 'repetition_index': 0,
'threads': 1, 'iterations': 1021, 'null_percent': 1.0}
WriteCsvStringRejectQuote/0 1.935 GiB/sec 2.339 GiB/sec 20.879
{'family_index': 3, 'per_family_instance_index': 0, 'run_name':
'WriteCsvStringRejectQuote/0', 'repetitions': 3, 'repetition_index': 2,
'threads': 1, 'iterations': 3547, 'null_percent': 0.0}
WriteCsvNumericCheckQuote/10 293.965 MiB/sec 354.613 MiB/sec 20.631
{'family_index': 4, 'per_family_instance_index': 2, 'run_name':
'WriteCsvNumericCheckQuote/10', 'repetitions': 3, 'repetition_index': 1,
'threads': 1, 'iterations': 1030, 'null_percent': 10.0}
WriteCsvStringRejectQuote/1 1.865 GiB/sec 2.090 GiB/sec 12.053
{'family_index': 3, 'per_family_instance_index': 1, 'run_name':
'WriteCsvStringRejectQuote/1', 'repetitions': 3, 'repetition_index': 2,
'threads': 1, 'iterations': 3630, 'null_percent': 1.0}
WriteCsvNumericCheckQuote/50 163.498 MiB/sec 181.960 MiB/sec 11.292
{'family_index': 4, 'per_family_instance_index': 3, 'run_name':
'WriteCsvNumericCheckQuote/50', 'repetitions': 3, 'repetition_index': 1,
'threads': 1, 'iterations': 957, 'null_percent': 50.0}
WriteCsvNumeric/0 316.044 MiB/sec 349.072 MiB/sec 10.451
{'family_index': 0, 'per_family_instance_index': 0, 'run_name':
'WriteCsvNumeric/0', 'repetitions': 3, 'repetition_index': 1, 'threads': 1,
'iterations': 1212, 'null_percent': 0.0}
WriteCsvStringRejectQuote/50 621.584 MiB/sec 674.127 MiB/sec 8.453
{'family_index': 3, 'per_family_instance_index': 3, 'run_name':
'WriteCsvStringRejectQuote/50', 'repetitions': 3, 'repetition_index': 1,
'threads': 1, 'iterations': 2149, 'null_percent': 50.0}
WriteCsvStringRejectQuote/10 1.573 GiB/sec 1.677 GiB/sec 6.618
{'family_index': 3, 'per_family_instance_index': 2, 'run_name':
'WriteCsvStringRejectQuote/10', 'repetitions': 3, 'repetition_index': 1,
'threads': 1, 'iterations': 3237, 'null_percent': 10.0}
WriteCsvStringWithQuote/10 670.898 MiB/sec 707.484 MiB/sec 5.453
{'family_index': 2, 'per_family_instance_index': 2, 'run_name':
'WriteCsvStringWithQuote/10', 'repetitions': 3, 'repetition_index': 2,
'threads': 1, 'iterations': 1132, 'null_percent': 10.0}
WriteCsvStringWithQuote/0 754.918 MiB/sec 791.544 MiB/sec 4.852
{'family_index': 2, 'per_family_instance_index': 0, 'run_name':
'WriteCsvStringWithQuote/0', 'repetitions': 3, 'repetition_index': 0,
'threads': 1, 'iterations': 1134, 'null_percent': 0.0}
WriteCsvStringWithQuote/1 726.550 MiB/sec 761.009 MiB/sec 4.743
{'family_index': 2, 'per_family_instance_index': 1, 'run_name':
'WriteCsvStringWithQuote/1', 'repetitions': 3, 'repetition_index': 1,
'threads': 1, 'iterations': 1109, 'null_percent': 1.0}
WriteCsvNumeric/10 293.629 MiB/sec 303.939 MiB/sec 3.511
{'family_index': 0, 'per_family_instance_index': 2, 'run_name':
'WriteCsvNumeric/10', 'repetitions': 3, 'repetition_index': 0, 'threads': 1,
'iterations': 1248, 'null_percent': 10.0}
WriteCsvStringWithQuote/50 452.412 MiB/sec 466.542 MiB/sec 3.123
{'family_index': 2, 'per_family_instance_index': 3, 'run_name':
'WriteCsvStringWithQuote/50', 'repetitions': 3, 'repetition_index': 1,
'threads': 1, 'iterations': 1249, 'null_percent': 50.0}
WriteCsvNumeric/1 319.029 MiB/sec 327.880 MiB/sec 2.774
{'family_index': 0, 'per_family_instance_index': 1, 'run_name':
'WriteCsvNumeric/1', 'repetitions': 3, 'repetition_index': 1, 'threads': 1,
'iterations': 1247, 'null_percent': 1.0}
WriteCsvNumeric/50 153.325 MiB/sec 156.648 MiB/sec 2.167
{'family_index': 0, 'per_family_instance_index': 3, 'run_name':
'WriteCsvNumeric/50', 'repetitions': 3, 'repetition_index': 2, 'threads': 1,
'iterations': 1083, 'null_percent': 50.0}
```
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