** Changed in: libvirt (Fedora)
Status: Unknown => Fix Released
** Changed in: libvirt (Fedora)
Importance: Unknown => Undecided
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https://bugs.launchpad.net/bugs/993354
Title:
cpuset for libvirt set to 0 after suspend/resume
Status in libvirt package in Ubuntu:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in libvirt package in Fedora:
Fix Released
Bug description:
Starting 12.04 (afaict), guest KVM processes are put into their own
cgroup with the cpuset of that cgroup at
/sys/fs/cgroup/cpuset/libvirt/qemu/<vm_name>/cpuset.cpus
On a clean boot, the cpuset.cpus for libvirt contain all the cpus.
However, after a suspend/resume, cpuset.cpus for libvirt and all
children is 0, which effectively pins all vcpus in the guest to a cpu
0 in the host causing massive performance problems.
There is already a bug that RedHat is tracking for this issue:
https://bugzilla.redhat.com/show_bug.cgi?id=714271
Expected:
The cpuset for libvirt and children remains consistent across a suspend/resume
What happens:
The cpuset for libvirt and children gets set to 0
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: libvirt-bin 0.9.8-2ubuntu17
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu5
Architecture: amd64
Date: Wed May 2 10:22:31 2012
InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
ProcEnviron:
LANGUAGE=en_US:en
TERM=xterm
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: libvirt
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.libvirt.qemu.networks.default.xml: [deleted]
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