From: Marcelo Tosatti <mtosatti@redhat.com>
To: Martin Schmitt <mas@scsy.de>
Cc: kvm@vger.kernel.org
Subject: Re: Soft lockups and cpu frequency scaling
Date: Wed, 6 Jan 2010 07:33:08 -0200 [thread overview]
Message-ID: <20100106093308.GA5363@amt.cnet> (raw)
In-Reply-To: <4B444686.1060309@scsy.de>
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
next prev parent reply other threads:[~2010-01-06 9:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-22 13:16 Soft lockups and cpu frequency scaling Martin Schmitt
2009-12-24 15:52 ` Marcelo Tosatti
2010-01-04 14:01 ` Martin Schmitt
2010-01-06 8:35 ` Marcelo Tosatti
2010-01-06 8:15 ` Martin Schmitt
2010-01-06 9:33 ` Marcelo Tosatti [this message]
2010-01-06 9:40 ` Martin Schmitt
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