swebb2066 commented on PR #333:
URL: https://github.com/apache/logging-log4cxx/pull/333#issuecomment-1903011007
On Ubuntu gcc 9, benchmarks improve from:
| Benchmark | Time | CPU | Iterations |
| -------- | ----- | ------ | ------- |
| Testing disabled logging request | 0.474 ns | 0.474 ns | 1000000000 |
| Testing disabled logging request/threads:16 | 0.093 ns | 1.01 ns |
681895600 |
| Logging 5 char string using MessageBuffer, pattern: %m%n | 413 ns | 413
ns | 1700177 |
| Logging 5 char string using MessageBuffer, pattern: %m%n/threads:16 | 977
ns | 7913 ns | 91360 |
| Logging 49 char string using MessageBuffer, pattern: %m%n | 435 ns | 435
ns | 1606003 |
| Logging 49 char string using MessageBuffer, pattern: %m%n/threads:16 |
980 ns | 7856 ns | 92928 |
| Logging int value using MessageBuffer, pattern: %m%n | 608 ns | 607 ns |
1198654 |
| Logging int value using MessageBuffer, pattern: %m%n/threads:16 | 1000 ns
| 8050 ns | 88992 |
| Logging int+float using MessageBuffer, pattern: %m%n | 1068 ns | 1068 ns
| 656795 |
| Logging int+float using MessageBuffer, pattern: %m%n/threads:16 | 946 ns
| 7671 ns | 86656 |
| Logging int value using MessageBuffer, pattern: [%d] %m%n | 633 ns | 633
ns | 1106264 |
| Logging int value using MessageBuffer, pattern: [%d] [%c] [%p] %m%n | 631
ns | 631 ns | 1112696 |
| Logging 49 char string using FMT, pattern: %m%n | 404 ns | 404 ns |
1728028 |
| Logging 49 char string using FMT, pattern: %m%n/threads:16 | 982 ns |
7914 ns | 91152 |
| Logging int value using FMT, pattern: %m%n | 429 ns | 429 ns | 1629010 |
| Logging int value using FMT, pattern: %m%n/threads:16 | 982 ns | 7928 ns
| 90304 |
| Logging int+float using FMT, pattern: %m%n | 623 ns | 623 ns | 1124386 |
| Logging int+float using FMT, pattern: %m%n/threads:16 | 984 ns | 7928 ns
| 88768 |
| Async, int value using MessageBuffer, pattern: %m%n | 605 ns | 605 ns |
1206157 |
| Async, int value using MessageBuffer, pattern: %m%n/threads:16 | 1007 ns
| 8162 ns | 89472 |
to:
| Benchmark | Time | CPU | Iterations |
| -------- | ----- | ---- | ------- |
| Testing disabled logging request | 0.474 ns | 0.474 ns | 1000000000 |
| Testing disabled logging request/threads:16 | 0.094 ns | 1.01 ns |
720825520 |
| Logging 5 char string using MessageBuffer, pattern: %m%n | 304 ns | 304
ns | 2129199 |
| Logging 5 char string using MessageBuffer, pattern: %m%n/threads:16 | 440
ns | 3565 ns | 208944 |
| Logging 49 char string using MessageBuffer, pattern: %m%n | 328 ns | 328
ns | 2124087 |
| Logging 49 char string using MessageBuffer, pattern: %m%n/threads:16 |
443 ns | 3589 ns | 196688 |
| Logging int value using MessageBuffer, pattern: %m%n | 503 ns | 503 ns |
1457723 |
| Logging int value using MessageBuffer, pattern: %m%n/threads:16 | 456 ns
| 3710 ns | 172304 |
| Logging int+float using MessageBuffer, pattern: %m%n | 951 ns | 951 ns |
731160 |
| Logging int+float using MessageBuffer, pattern: %m%n/threads:16 | 560 ns
| 4571 ns | 174688 |
| Logging int value using MessageBuffer, pattern: [%d] %m%n | 574 ns | 574
ns | 1213959 |
| Logging int value using MessageBuffer, pattern: [%d] [%c] [%p] %m%n | 575
ns | 575 ns | 1226639 |
| Logging 49 char string using FMT, pattern: %m%n | 297 ns | 297 ns |
2352006 |
| Logging 49 char string using FMT, pattern: %m%n/threads:16 | 440 ns |
3572 ns | 176944 |
| Logging int value using FMT, pattern: %m%n | 321 ns | 321 ns | 2179192 |
| Logging int value using FMT, pattern: %m%n/threads:16 | 438 ns | 3569 ns
| 210704 |
| Logging int+float using FMT, pattern: %m%n | 463 ns | 463 ns | 1511290 |
| Logging int+float using FMT, pattern: %m%n/threads:16 | 377 ns | 3102 ns
| 194976 |
| Async, int value using MessageBuffer, pattern: %m%n | 501 ns | 501 ns |
1466060 |
| Async, int value using MessageBuffer, pattern: %m%n/threads:16 | 449 ns |
3664 ns | 168144 |
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