From: Anthony Liguori <anthony@codemonkey.ws>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] AMD 100% CPU bug; patch available?
Date: Tue, 12 Aug 2008 13:17:46 -0500 [thread overview]
Message-ID: <48A1D3CA.9010308@codemonkey.ws> (raw)
In-Reply-To: <48A1BBF8.30407@quinthar.com>
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
prev parent reply other threads:[~2008-08-12 18:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-12 16:36 [Qemu-devel] AMD 100% CPU bug; patch available? David Barrett
2008-08-12 17:19 ` Rick Vernam
2008-08-12 20:31 ` David Barrett
2008-08-12 18:17 ` Anthony Liguori [this message]
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