From: Avi Kivity <avi@redhat.com>
To: Robin Lee Powell <rlpowell@digitalkingdom.org>
Cc: Nikola Ciprich <nikola.ciprich@linuxbox.cz>, kvm@vger.kernel.org
Subject: Re: tcpdump locks up kvm host for a while.
Date: Wed, 05 Oct 2011 20:21:53 +0200 [thread overview]
Message-ID: <4E8CA041.1090709@redhat.com> (raw)
In-Reply-To: <20111004194033.GL30164@stodi.digitalkingdom.org>
On 10/04/2011 09:40 PM, Robin Lee Powell wrote:
> > >When I run tcpdump on a *guest*, the entire guest completely
> > >freezes up; no response even to hitting enter on the console.
> > >"virsh list" also locks up whenever it tries to print state about
> > >that VM (but the others work fine), as does any other operation
> > >that touches the state of that VM. The VM takes up 100% of CPU
> > >on one core while this is happening. Eventually it gets better.
> >
> > You can use 'perf kvm' to figure out where the guest is spinning.
>
> OK, gathered with:
>
> sudo perf kvm --guest --host record -o /tmp/kvm_perf -a
>
> I don't know how to read it at all, so it's at
> http://users.digitalkingdom.org/~rlpowell/media/public/kvm_perf
>
Not accessible.
Please post the output of 'perf kvm report > log'.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2011-10-05 18:22 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-28 2:01 tcpdump locks up kvm host for a while Robin Lee Powell
2011-09-29 19:07 ` Robin Lee Powell
2011-09-30 19:03 ` Nikola Ciprich
2011-09-30 22:19 ` Robin Lee Powell
2011-10-01 7:36 ` Nikola Ciprich
2011-10-02 0:45 ` Re: [kvm] " Robin Lee Powell
2011-10-02 17:06 ` Avi Kivity
2011-10-02 17:07 ` Re: [kvm] " Robin Lee Powell
2011-10-02 17:12 ` Avi Kivity
2011-10-02 17:13 ` Re: [kvm] " Robin Lee Powell
2011-10-02 17:21 ` Avi Kivity
2011-10-02 17:37 ` Re: [kvm] " Robin Lee Powell
2011-10-02 19:38 ` Avi Kivity
2011-10-03 3:03 ` Re: [kvm] " Robin Lee Powell
2011-10-03 5:41 ` Nikola Ciprich
2011-10-04 18:15 ` Avi Kivity
2011-10-04 19:40 ` Robin Lee Powell
2011-10-05 18:21 ` Avi Kivity [this message]
[not found] ` <20111005183653.GF3023@stodi.digitalkingdom.org>
2011-10-05 20:29 ` Robin Lee Powell
2011-10-10 13:08 ` Avi Kivity
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