I've tested this with Karmic+KVM+ext4 and the problem is present as well. Using Karmic+KVM+ext3 resulted in the same performance boost as on Lucid.
I'd be nice if others could comment on whether this problem is present with Lucid/Karmic+Xen+ext4 too. I guess it should be, because the problem seems to be between the default cache=writethrough policy and an ext4 host OS filesystem. And changing either of them solves the issue. Btw. I was using in Lucid qemu-kvm-0.12.3 and in Karmic qemu-kvm-0.11.0. Probably this is not important in this bug. -- Slow disk IO for all guests with all disc modes and types. https://bugs.launchpad.net/bugs/550409 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
