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2 Commits

Author SHA1 Message Date
Eelco Chaudron
5f2af0b7a3 utilities: Add TASK_STOPPED accounting to the kernel_delay.py script. 
This changes add statistics for when a thread is put into stop state.
For example with the following:

kill -STOP $(pidof ovs-vswitchd); sleep 1; kill -CONT $(pidof ovs-vswitchd);

Acked-by: Simon Horman <horms@ovn.org>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
 2024-02-20 13:17:39 +01:00
Eelco Chaudron
13dde11310 utilities: Add kernel_delay.py script to debug a busy Linux kernel. 
This patch adds an utility that can be used to determine if
an issue is related to a lack of Linux kernel resources.

This tool is also featured in a Red Hat developers blog article:

  https://developers.redhat.com/articles/2023/07/24/troubleshooting-open-vswitch-kernel-blame

Reviewed-by: Adrian Moreno <amorenoz@redhat.com>
Acked-by: Aaron Conole <aconole@redhat.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
 2023-09-27 11:21:16 +02:00