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| author |  Daniel Bristot de Oliveira <bristot@kernel.org>
| 2024-05-16 16:15:22 +0200 |
|---|---|---|
| committer | Daniel Bristot de Oliveira <bristot@kernel.org>
| 2024-05-16 16:44:34 +0200 |
| commit | e9a4062e1527238c5649d0f4be794a8566fd77c9 (patch) | |
| tree | 9e9ed8c235323861f76d5f12def7e14729c55f7d /Documentation | |
| parent | rtla/timerlat: Make user-space threads the default (diff) | |
| download | linux-e9a4062e1527238c5649d0f4be794a8566fd77c9.tar.gz linux-e9a4062e1527238c5649d0f4be794a8566fd77c9.tar.bz2 linux-e9a4062e1527238c5649d0f4be794a8566fd77c9.zip | |
rtla: Add --trace-buffer-size option
Add the option allow the users to set a different buffer size for the
trace. For example, in large systems, the user might be interested on
reducing the trace buffer to avoid large tracing files.
The buffer size is specified in kB, and it is only affecting
the tracing instance.
The function trace_set_buffer_size() appears on libtracefs v1.6,
so increase the minimum required version on Makefile.config.
Link: https://lkml.kernel.org/r/e7c9ca5b3865f28e131a49ec3b984fadf2d056c6.1715860611.git.bristot@kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/tools/rtla/common_options.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/tools/rtla/common_options.rst b/Documentation/tools/rtla/common_options.rst index a96ea0ed662e..7ac7b7581466 100644 --- a/Documentation/tools/rtla/common_options.rst +++ b/Documentation/tools/rtla/common_options.rst @@ -54,6 +54,9 @@ After starting the workload, let it run for *s* seconds before starting collecting the data, allowing the system to warm-up. Statistical data generated during warm-up is discarded. +**--trace-buffer-size** *kB* + Set the per-cpu trace buffer size in kB for the tracing output. + **-h**, **--help** Print help menu. |