swebb2066 commented on PR #351:
URL: https://github.com/apache/logging-log4cxx/pull/351#issuecomment-1937974342
On Windows, the benchmark comparisons using a lock (old) and without locking
(new) in AppenderAttachableImpl::appendLoopOnAppenders are:
| Benchmark | Time | CPU | Time Old | Time New | CPU Old | CPU New |
| -------- | ---- | ---- | -------- | -------- | -------- | ---- |
| Testing disabled logging request | +0.0034 | +0.1569 | 4 | 4 | 1 | 1 |
| Testing disabled logging request/threads:4 | -0.2516 | -0.4159 | 1 | 1 |
4 | 2 |
| Logging 5 char string using MessageBuffer, pattern: %m%n | -0.1902 |
-0.2120 | 738 | 597 | 443 | 349 |
| Logging 5 char string using MessageBuffer, pattern: %m%n/threads:4 |
+0.0410 | -0.5887 | 437 | 455 | 1289 | 530 |
| Logging 49 char string using MessageBuffer, pattern: %m%n | -0.0180 |
-0.1123 | 752 | 739 | 481 | 427 |
| Logging 49 char string using MessageBuffer, pattern: %m%n/threads:4 |
-0.0485 | -0.3203 | 462 | 439 | 1242 | 844 |
| Logging int value using MessageBuffer, pattern: %m%n | -0.0725 | -0.1875
| 1756 | 1629 | 1099 | 893 |
| Logging int value using MessageBuffer, pattern: %m%n/threads:4 | -0.1219
| -0.3980 | 740 | 650 | 1744 | 1050 |
| Logging int+float using MessageBuffer, pattern: %m%n | -0.1529 | -0.3460
| 3535 | 2995 | 2288 | 1496 |
| Logging int+float using MessageBuffer, pattern: %m%n/threads:4 | -0.1841
| -0.3902 | 1387 | 1132 | 3139 | 1914 |
| Logging int value using MessageBuffer, pattern: [%d] %m%n | -0.1133 |
-0.2317 | 1868 | 1656 | 1144 | 879 |
| Logging int value using MessageBuffer, pattern: [%d] [%c] [%p] %m%n |
-0.0990 | -0.2480 | 1876 | 1690 | 1308 | 984 |
| Logging 49 char string using FMT, pattern: %m%n | -0.0972 | -0.2988 | 796
| 719 | 572 | 401 |
| Logging 49 char string using FMT, pattern: %m%n/threads:4 | -0.1717 |
-0.4716 | 489 | 405 | 1135 | 600 |
| Logging int value using FMT, pattern: %m%n | -0.0587 | -0.0932 | 712 |
670 | 460 | 417 |
| Logging int value using FMT, pattern: %m%n/threads:4 | -0.1114 | -0.3957
| 458 | 407 | 1062 | 642 |
| Logging int+float using FMT, pattern: %m%n | -0.1281 | -0.1353 | 1132 |
987 | 663 | 573 |
| Logging int+float using FMT, pattern: %m%n/threads:4 | -0.1281 | -0.5153
| 544 | 475 | 1662 | 806 |
| Async, int value using MessageBuffer, pattern: %m%n | -0.1272 | -0.2650 |
1824 | 1592 | 1224 | 900 |
| Async, int value using MessageBuffer, pattern: %m%n/threads:4 | -0.0474 |
-0.3363 | 745 | 709 | 1883 | 1250 |
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