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| author | Thomas Richter <tmricht@linux.ibm.com> | 2025-03-04 12:23:49 +0300 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2025-03-05 20:19:23 +0300 |
| commit | 957d194163bf983da98bf7ec7e4f86caff8cd0eb (patch) | |
| tree | b56bda2d150028f86366c7345ebb58558fe322a5 /tools/perf/scripts/python | |
| parent | b627b443ccfbdd2c44754c8a907a8f22db6bb11e (diff) | |
| download | linux-957d194163bf983da98bf7ec7e4f86caff8cd0eb.tar.xz | |
perf bench: Fix perf bench syscall loop count
Command 'perf bench syscall fork -l 100000' offers option -l to run for
a specified number of iterations. However this option is not always
observed. The number is silently limited to 10000 iterations as can be
seen:
Output before:
# perf bench syscall fork -l 100000
# Running 'syscall/fork' benchmark:
# Executed 10,000 fork() calls
Total time: 23.388 [sec]
2338.809800 usecs/op
427 ops/sec
#
When explicitly specified with option -l or --loops, also observe
higher number of iterations:
Output after:
# perf bench syscall fork -l 100000
# Running 'syscall/fork' benchmark:
# Executed 100,000 fork() calls
Total time: 716.982 [sec]
7169.829510 usecs/op
139 ops/sec
#
This patch fixes the issue for basic execve fork and getpgid.
Fixes: ece7f7c0507c ("perf bench syscall: Add fork syscall benchmark")
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Tested-by: Athira Rajeev <atrajeev@linux.ibm.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Link: https://lore.kernel.org/r/20250304092349.2618082-1-tmricht@linux.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions
