After updating a server 12.04. LTS including the new HWE stack support I've got the same problems. The guest (MS Server 2012R2) was running after startup for about 7 to 10 min without problems, after this period the cpu utilisation for the kvm process increases more an more, the guest became sluggish. Most significant problem: file and printer services went slow but kept working, SQL-Server applications have crashed. Starting the previous kernel 3.11.0-26-generic was my workaround solving the problem for the moment. I
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1341195 Title: KVM guests getting slow by time Status in “linux” package in Ubuntu: Incomplete Bug description: There is a post with very similar symptoms on serverfault: http://serverfault.com/questions/609881/windows-server-2012-on-kvm-on- ubuntu-14-04-runs-well-for-a-while-and-then-slows/612084#612084 Basically all kind of KVM guests are getting slow by time, both windows or linux. The more running guests, it happens sooner. Switching back to Saucy kernel is a good workaround. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: qemu-kvm 2.0.0+dfsg-2ubuntu1.1 ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2 Uname: Linux 3.13.0-29-generic x86_64 NonfreeKernelModules: zfs zunicode zavl zcommon znvpair ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 Date: Sat Jul 12 22:18:49 2014 SourcePackage: qemu UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1341195/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp