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authorXie XiuQi <xiexiuqi@huawei.com>2023-09-19 21:30:28 +0800
committerDaniel Bristot de Oliveira <bristot@kernel.org>2023-09-22 14:44:04 +0200
commit81ec384b80ffbda752c230778d39ea620c7e3bcf (patch)
treec9f4c328627486f03d80c5986db457d692c17d0c /Documentation/tools
parente8c44d3b713b96cda055a23b21e8c4f931dd159f (diff)
downloadlinux-81ec384b80ffbda752c230778d39ea620c7e3bcf.tar.gz
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.rst4
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 057db78d4095a1..03b7f3deb0698f 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