Thomas Richter fc1b20f168 perf bench: Fix perf bench syscall loop count ...

[ Upstream commit 957d194163bf983da98bf7ec7e4f86caff8cd0eb ]

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: ece7f7c050 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-04-10 14:39:23 +02:00

..

bench.h

perf bench uprobe: Add uretprobe variant of uprobe benchmarks

2024-04-12 17:54:02 -03:00

breakpoint.c

perf bench breakpoint: Skip run if no breakpoints available

2023-08-23 08:39:02 -03:00

Build

perf bench: Make bench its own library

2024-06-26 11:07:28 -07:00

epoll-ctl.c

tools/perf: Fix perf bench epoll to enable the run when some CPU's are offline

2024-06-13 21:27:26 -07:00

epoll-wait.c

perf bench: Fix undefined behavior in cmpworker()

2025-02-17 10:05:12 +01:00

evlist-open-close.c

…

find-bit-bench.c

perf bench: Avoid NDEBUG warning

2023-04-04 09:39:56 -03:00

futex-hash.c

tools/perf: Fix perf bench futex to enable the run when some CPU's are offline

2024-06-13 21:26:58 -07:00

futex-lock-pi.c

tools/perf: Fix perf bench futex to enable the run when some CPU's are offline

2024-06-13 21:26:58 -07:00

futex-requeue.c

tools/perf: Fix perf bench futex to enable the run when some CPU's are offline

2024-06-13 21:26:58 -07:00

futex-wake-parallel.c

tools/perf: Fix timing issue with parallel threads in perf bench wake-up-parallel

2024-06-13 21:27:49 -07:00

futex-wake.c

tools/perf: Fix perf bench futex to enable the run when some CPU's are offline

2024-06-13 21:26:58 -07:00

futex.h

…

inject-buildid.c

perf bench internals inject-build-id: Fix trap divide when collecting just one DSO

2024-05-07 12:44:02 -03:00

kallsyms-parse.c

…

mem-functions.c

…

mem-memcpy-arch.h

…

mem-memcpy-x86-64-asm-def.h

tools headers: Update the copy of x86's mem{cpy,set}_64.S used in 'perf bench'

2023-05-17 10:42:19 -03:00

mem-memcpy-x86-64-asm.S

tools headers: Update the copy of x86's mem{cpy,set}_64.S used in 'perf bench'

2023-05-17 10:42:19 -03:00

mem-memset-arch.h

…

mem-memset-x86-64-asm-def.h

tools headers: Update the copy of x86's mem{cpy,set}_64.S used in 'perf bench'

2023-05-17 10:42:19 -03:00

mem-memset-x86-64-asm.S

tools headers: Update the copy of x86's mem{cpy,set}_64.S used in 'perf bench'

2023-05-17 10:42:19 -03:00

numa.c

perf bench numa: Fix type of loop iterator in do_work, it should be 'long'

2023-04-04 09:39:56 -03:00

pmu-scan.c

perf pmu: Abstract alias/event struct

2023-08-24 10:42:46 -03:00

sched-messaging.c

perf bench messaging: Kill child processes when exit abnormally in process mode

2023-09-26 21:47:12 -07:00

sched-pipe.c

perf bench sched pipe: Add -G/--cgroups option

2023-10-25 10:02:10 -07:00

sched-seccomp-notify.c

perf bench sched-seccomp-notify: Fix spelling mistake "synchronious" -> "synchronous"

2023-12-05 15:48:52 -03:00

synthesize.c

perf tool: Constify tool pointers

2024-08-12 18:05:14 -03:00

syscall.c

perf bench: Fix perf bench syscall loop count

2025-04-10 14:39:23 +02:00

uprobe.c

perf bench uprobe: Add uretprobe variant of uprobe benchmarks

2024-04-12 17:54:02 -03:00