* [email protected] <[email protected]> [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
