Bug#987598: linux-image-5.10.0-6-amd64: no longer accounting guest CPU time in /proc/stat
* jaroslav@thinline.cz <jaroslav@thinline.cz> [210426 18:43]:
> after upgrading some of our Qemu/KVM host servers to Debian testing I
> noticed that their CPU load changed from "user" to "system" (observed via
> Prometheus and Grafana.) After quick digging I found that the new kernel is
> no longer counting "guest" time and 9th column in /proc/stat stays 0 at all
> times. This is a regression from Debian stable.
Cf. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=986371 and
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1922846
Upstream bug: https://bugzilla.kernel.org/show_bug.cgi?id=209831
Reply to: