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rtla/hwnoise: Reduce runtime to 75%
osnoise runs 100% of time by default. It makes sense because osnoise
is preemptive. hwnoise checks preemption once a second, so it
reduces system progress.
Reduce runtime to 75% to avoid problems by default. I added a Fixes
as it might avoid problems for first time users as it lands on distros.
Link: https://lkml.kernel.org/r/af0b7113ffc00031b9af4bb40ef5889a27dadf8c.1686066600.git.bristot@kernel.org
Cc: William White <chwhite@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Tested-by: Juri Lelli <juri.lelli@redhat.com>
Fixes: 1f428356c3
("rtla: Add hwnoise tool")
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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1 changed files with 7 additions and 1 deletions
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@ -348,8 +348,14 @@ struct osnoise_top_params *osnoise_top_parse_args(int argc, char **argv)
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if (!params)
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exit(1);
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if (strcmp(argv[0], "hwnoise") == 0)
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if (strcmp(argv[0], "hwnoise") == 0) {
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params->mode = MODE_HWNOISE;
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/*
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* Reduce CPU usage for 75% to avoid killing the system.
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*/
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params->runtime = 750000;
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params->period = 1000000;
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}
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while (1) {
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static struct option long_options[] = {
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