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From: | Anthony Liguori |
Subject: | Re: [Qemu-devel] AMD 100% CPU bug; patch available? |
Date: | Tue, 12 Aug 2008 13:17:46 -0500 |
User-agent: | Thunderbird 2.0.0.16 (X11/20080723) |
David Barrett wrote:
Can anybody confirm that qemu works on an AMD processor with a Linux host and Linux guest (ideally Ubuntu 8.04 in both cases) without using 100% CPU? (qemu process on the host uses 100% CPU despite all processes on the guest being idle.)Or is there a known bug that qemu with a Ubuntu guest always uses 100% CPU on AMD Ubuntu hosts? If so, is there a patch or workaround for it?I don't know this for certain, but it's the only pattern I can see: I've run qemu on a bunch of laptops and servers over the past 12 months -- often with the exact same image and exact same commands -- and some hosts see the guest VM use limited CPU, and others a solid 100%. This seems to be the case whether or not -kernel-kqemu is used.
Do you still see this if you use -no-kqemu? Regards, Anthony Liguori
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