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| author | Xie XiuQi <xiexiuqi@huawei.com> | 2023-09-19 21:30:28 +0800 |
|---|---|---|
| committer | Daniel Bristot de Oliveira <bristot@kernel.org> | 2023-09-22 14:44:04 +0200 |
| commit | 81ec384b80ffbda752c230778d39ea620c7e3bcf (patch) | |
| tree | c9f4c328627486f03d80c5986db457d692c17d0c /Documentation/tools | |
| parent | e8c44d3b713b96cda055a23b21e8c4f931dd159f (diff) | |
| download | linux-stable-81ec384b80ffbda752c230778d39ea620c7e3bcf.tar.gz linux-stable-81ec384b80ffbda752c230778d39ea620c7e3bcf.tar.bz2 linux-stable-81ec384b80ffbda752c230778d39ea620c7e3bcf.zip | |
rtla: fix a example in rtla-timerlat-hist.rst
The following error message is reported when running the example in document.
# timerlat hist -d 10m -c 0-4 -P d:100us:1ms -p 1ms --no-aa
Failed to set timerlat period
Could not apply config
The unit of the period is microsecond, '1ms' cannot be accepted.
usage: [rtla] timerlat hist [-h] [-q] [-d s] [-D] [-n] [-a us] [-p us] [-i us] [-T us] [-s us] ...
...
-p/--period us: timerlat period in us
...
Also fix another minor missleading comment.
Link: https://lore.kernel.org/lkml/20230919133028.697144-1-xiexiuqi@huaweicloud.com
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Diffstat (limited to 'Documentation/tools')
| -rw-r--r-- | Documentation/tools/rtla/rtla-timerlat-hist.rst | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/tools/rtla/rtla-timerlat-hist.rst b/Documentation/tools/rtla/rtla-timerlat-hist.rst index 057db78d4095..03b7f3deb069 100644 --- a/Documentation/tools/rtla/rtla-timerlat-hist.rst +++ b/Documentation/tools/rtla/rtla-timerlat-hist.rst @@ -36,11 +36,11 @@ EXAMPLE In the example below, **rtla timerlat hist** is set to run for *10* minutes, in the cpus *0-4*, *skipping zero* only lines. Moreover, **rtla timerlat hist** will change the priority of the *timerlat* threads to run under -*SCHED_DEADLINE* priority, with a *10us* runtime every *1ms* period. The +*SCHED_DEADLINE* priority, with a *100us* runtime every *1ms* period. The *1ms* period is also passed to the *timerlat* tracer. Auto-analysis is disabled to reduce overhead :: - [root@alien ~]# timerlat hist -d 10m -c 0-4 -P d:100us:1ms -p 1ms --no-aa + [root@alien ~]# timerlat hist -d 10m -c 0-4 -P d:100us:1ms -p 1000 --no-aa # RTLA timerlat histogram # Time unit is microseconds (us) # Duration: 0 00:10:00 |