Created
October 5, 2015 09:59
-
-
Save munhitsu/17b24825a1f383d6b6b9 to your computer and use it in GitHub Desktop.
high kworker CPU usage / high system CPU usage
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| kworker is accounts for all kernel threads so you will also see high system CPU usage | |
| In my case I've had nearly filled up BTRFS partition, so kernel was constantly searching for space. | |
| tracing kernel - raw | |
| ``` | |
| # echo l > /proc/sysrq-trigger | |
| # dmesg | |
| ``` | |
| tracing kernel - gui | |
| # apt-get install linux-tools-common | |
| # perf record -g -a sleep 10 | |
| # perf report |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment