I'm currently trying to reproduce this on a fully uptodate maverick
(no -updates) box. I have 3 lucid vm's up, each of which started as
a server instance and is doing 'apt-get install openoffice.org' to
tax disk (and network). I'm not getting the behavior you are seeing
though.
Each VM has its own 30G LVM volume for a root disk, and I'm running
each with:
kvm -drive file=/dev/data/vm1,if=virtio,index=0,boot=on -m 1G -smp 2
-vnc :1
kvm -drive file=/dev/data/vm2,if=virtio,index=0,boot=on -m 1G -smp 2
-vnc :2
kvm -drive file=/dev/data/vm3,if=virtio,index=0,boot=on -m 1G -smp 2
-vnc :3
Of course at times each kvm process hits 100% of a cpu, but they're
absolutely not staying there, and I don't see anything like flush-252:0
even making it into 'top' results.
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https://bugs.launchpad.net/bugs/703811
Title:
kvm guest's cpu usage with virtio storage driver goes up to 100%
because of flush process
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