Re: Soft lockups and cpu frequency scaling

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On Wed, Jan 06, 2010 at 09:15:02AM +0100, Martin Schmitt wrote:
> Marcelo Tosatti schrieb:
> 
> > Can you please share a few more "soft lockup" messages? (with
> > backtrace included).
> 
> Full dmesg from guest: http://pastebin.com/f51a966df
> 
> > Also qemu command line.
> 
> >From ps:
> 
> /usr/local/kvm/bin/qemu-system-x86_64 -hda /drbd/vweb/vweb.vmdk -vnc
> 127.0.0.1:4 -m 512 -net nic,macaddr=00:16:3e:6a:a5:10 -net tap
> -enable-kvm -k de -pidfile /drbd/vweb/pidfile.pid -monitor
> tcp:127.0.0.1:1004,server,nowait -name /drbd/vweb/vweb.vmdk -cpu host
> -daemonize

Hum, can you try converting that vmdk image to qcow2 or raw? (with
qemu-img convert).

AFAICS the QEMU vmdk implementation is synchronous, so the guest 
waits on IO operations to complete on the host side.

> > And boot-up messages of host and guest.
> 
> Does the dmesg above cover that for the guest or are you asking for
> anything further than that?
> 
> Host side dmesg: http://pastebin.com/f47a30d22
> 
> Thanks for your time,
> 
> -martin
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