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| author |  Daniel Bristot de Oliveira <bristot@kernel.org>
| 2024-04-24 16:36:55 +0200 |
|---|---|---|
| committer | Daniel Bristot de Oliveira <bristot@kernel.org>
| 2024-05-15 15:13:57 +0200 |
| commit | cdbf71962bb07493d67fee34536a5724a8bb5886 (patch) | |
| tree | 944036a9f00d67af9868f046ba1a9230ed1d7014 /Documentation/tools | |
| parent | rtla/timerlat: Add a summary for hist mode (diff) | |
| download | linux-cdbf71962bb07493d67fee34536a5724a8bb5886.tar.gz linux-cdbf71962bb07493d67fee34536a5724a8bb5886.tar.bz2 linux-cdbf71962bb07493d67fee34536a5724a8bb5886.zip | |
rtla: Add the --warm-up option
On many cases, the results right after the startup are different
from the rest of the execution, biasing the results. For example,
on osnoise, the scheduler might take some time to adapt to the new
busy-loop workload.
Add the --warm-up <seconds> option, adding a warm-up phase (in
seconds) where the workload is set, but the results are discarded.
Link: https://lkml.kernel.org/r/e682d5ce5af90f123bd13220f63d5c3d118a92be.1713968967.git.bristot@kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Diffstat (limited to 'Documentation/tools')
| -rw-r--r-- | Documentation/tools/rtla/common_options.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/tools/rtla/common_options.rst b/Documentation/tools/rtla/common_options.rst index aeb91ff3bd68..a96ea0ed662e 100644 --- a/Documentation/tools/rtla/common_options.rst +++ b/Documentation/tools/rtla/common_options.rst @@ -50,6 +50,10 @@ 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. +**--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. + **-h**, **--help** Print help menu. |