From: Gleb Natapov <gleb@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: David Cure <kvm@cure.nom.fr>,
kvm@vger.kernel.org, Vadim Rozenfeld <vrozenfe@redhat.com>
Subject: Re: performance trouble
Date: Tue, 14 Feb 2012 15:40:30 +0200 [thread overview]
Message-ID: <20120214134030.GD18866@redhat.com> (raw)
In-Reply-To: <4F3A6260.7050208@redhat.com>
On Tue, Feb 14, 2012 at 03:32:16PM +0200, Avi Kivity wrote:
> On 02/10/2012 12:09 PM, David Cure wrote:
> > hello,
> >
> > Le Sun, Feb 05, 2012 at 11:38:34AM +0200, Avi Kivity ecrivait :
> > >
> > > Please post a trace as documented in http://www.linux-kvm.org/page/Tracing.
> >
> > I made the trace : started just before the slow function launch
> > and stoped just after. I start only one VM with 2 vcpus/16G RAM and only one
> > user connected to the VM to launch the test.
> >
> > The trace file is too big to post here, I gzip it and the file
> > is available here : http://www.roullier.net/report.txt.gz
> >
> > I hope you can find something strange.
> >
>
> It's reading the HPET like crazy. There are also tons of interrupts.
> Please use the windows performance tools to see which devices trigger
> these interrupts.
>
> The HPET issue will be fixed by the hyper-V enlightenments, but these
> will take some time to cook.
>
Try to add -no-hpet to qemu command line and see if it helps.
> You can also try vhost-net to improve networking latency.
>
> --
> error compiling committee.c: too many arguments to function
>
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to majordomo@vger.kernel.org
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--
Gleb.
next prev parent reply other threads:[~2012-02-14 13:40 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-23 8:28 performance trouble David Cure
2012-01-23 10:04 ` David Cure
2012-01-30 15:36 ` David Cure
2012-01-30 16:20 ` Brian Jackson
2012-01-30 16:51 ` David Cure
2012-01-30 17:21 ` Avi Kivity
2012-01-31 17:15 ` David Cure
2012-01-31 17:21 ` Avi Kivity
2012-02-02 10:41 ` David Cure
2012-02-03 8:59 ` David Cure
2012-02-05 9:38 ` Avi Kivity
2012-02-10 10:09 ` David Cure
2012-02-14 13:32 ` Avi Kivity
2012-02-14 13:40 ` Gleb Natapov [this message]
2012-02-16 8:55 ` David Cure
2012-02-16 9:01 ` Gleb Natapov
2012-02-17 8:59 ` David Cure
2012-02-17 10:07 ` Gleb Natapov
2012-02-17 14:01 ` David Cure
2012-02-19 9:13 ` Gleb Natapov
2012-02-22 16:33 ` David Cure
2012-02-22 16:58 ` David Cure
2012-02-23 8:38 ` Gleb Natapov
2012-03-16 10:13 ` David Cure
2012-03-19 10:51 ` Gleb Natapov
2012-03-20 9:32 ` David Cure
2012-03-20 9:45 ` Gleb Natapov
2012-03-20 11:18 ` David Cure
2012-03-20 12:38 ` Gleb Natapov
2012-03-21 11:10 ` David Cure
2012-03-21 17:31 ` Peter Lieven
2012-03-22 7:53 ` Gleb Natapov
2012-03-22 7:57 ` Peter Lieven
2012-03-22 8:35 ` David Cure
2012-03-22 8:33 ` David Cure
2012-03-22 8:50 ` Peter Lieven
2012-03-22 8:48 ` Vadim Rozenfeld
2012-03-22 8:52 ` Peter Lieven
2012-03-22 9:38 ` Vadim Rozenfeld
2012-03-26 17:00 ` Peter Lieven
2012-03-26 17:46 ` Vadim Rozenfeld
2012-03-26 17:52 ` Gleb Natapov
2012-03-26 18:36 ` Vadim Rozenfeld
2012-03-26 18:54 ` Peter Lieven
2012-03-26 20:11 ` Vadim Rozenfeld
2012-03-27 8:56 ` Gleb Natapov
2012-03-27 9:23 ` Vadim Rozenfeld
2012-03-27 9:24 ` Gleb Natapov
2012-03-27 9:26 ` Peter Lieven
2012-03-27 10:00 ` Gleb Natapov
2012-03-27 12:20 ` Peter Lieven
2012-03-27 12:26 ` Gleb Natapov
2012-03-27 12:28 ` Peter Lieven
2012-03-27 12:29 ` Gleb Natapov
2012-03-27 12:30 ` Peter Lieven
2012-03-27 14:06 ` Peter Lieven
2012-03-27 15:44 ` Vadim Rozenfeld
2012-03-27 15:58 ` Peter Lieven
2012-03-27 16:12 ` Vadim Rozenfeld
2012-03-27 16:16 ` Peter Lieven
2012-03-27 17:06 ` Vadim Rozenfeld
2012-03-28 8:38 ` Peter Lieven
2012-03-27 10:40 ` Vadim Rozenfeld
2012-03-27 10:49 ` Peter Lieven
2012-03-27 11:43 ` Vadim Rozenfeld
2012-03-27 14:44 ` Peter Lieven
2012-03-27 15:37 ` Vadim Rozenfeld
2012-03-27 15:39 ` Peter Lieven
2012-03-27 15:55 ` Vadim Rozenfeld
2012-03-22 8:31 ` David Cure
2012-03-22 8:47 ` Peter Lieven
2012-02-14 13:48 ` Vadim Rozenfeld
2012-02-16 9:10 ` David Cure
2012-02-17 15:27 ` David Cure
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