@serge-hallyn I'm using Netapp filer in c-mode for NFS storage, mount options are: (rw,nosuid,nodev,noatime,hard,nfsvers=3,tcp,intr,rsize=32768,wsize=32768,addr=x.x.x.x).
However, I can reproduce this on a a host with or without NFS, using local disk, qcow2, or raw images and the OP was using FC SAN. I've tried to reproduce your success by buiding a new VM the latest preciese 12.04.02 with updates, but i have been unsuccessful. It happens immediately after the restore 100% of the time. The quickest test i've found is this, it helps aid in your reproduction as it's an immediate indication. -Get/Compile lmbench -build it -run # touch tmpfile # for i in null read write open ; do sleep 1; ./lat_syscall -N 1 $i tmpfile; done - the latencies for read/write generally increase up to 2x, and the open/close by about 30% post restore. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1100843 Title: Live Migration Causes Performance Issues To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1100843/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
