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Documentation/rtla: Mention default cgroup state

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The RTLA option -C/--cgroup is used to set a cgroup for workload
threads. This is either a specific cgroup, if passed an argument, or
rtla's cgroup, if no argument is given.

Expand the documentation of the -C option to also include the
information about the cgroup settings when the option is not specified.

Signed-off-by: Tomas Glozar <tglozar@redhat.com>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20251010083338.478961-8-tglozar@redhat.com>
This commit is contained in:
Tomas Glozar
2025-10-10 10:33:36 +02:00
committed by Jonathan Corbet
parent 198fcc7cb8
commit 122a552b5b
1 changed files with 2 additions and 0 deletions
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2
Documentation/tools/rtla/common_options.txt
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@@ -48,6 +48,8 @@
Set a *cgroup* to the tracer's threads. If the **-C** option is passed without arguments, the tracer's thread will inherit **rtla**'s *cgroup*. Otherwise, the threads will be placed on the *cgroup* passed to the option.
If not set, the behavior differs between workload types. User workloads created by rtla will inherit rtla's cgroup. Kernel workloads are assigned the root cgroup.
**--warm-up** *s*
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.