From: Cyrill Gorcunov <gorcunov@openvz.org>
To: Pekka Enberg <penberg@kernel.org>
Cc: Daniele Carollo <carollo.dani@gmail.com>,
kvm@vger.kernel.org, Asias He <asias.hejun@gmail.com>,
Sasha Levin <levinsasha928@gmail.com>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: native kvm tool hrtimer problem
Date: Thu, 8 Mar 2012 19:13:53 +0400 [thread overview]
Message-ID: <20120308151353.GD21812@moon> (raw)
In-Reply-To: <CAOJsxLFbdaaOiR4w_qh-7hXZhOuJ75BSbWj2Sp8w-6gNdqpm3g@mail.gmail.com>
On Thu, Mar 08, 2012 at 05:11:16PM +0200, Pekka Enberg wrote:
> On Thu, Mar 8, 2012 at 4:32 PM, Daniele Carollo <carollo.dani@gmail.com> wrote:
> > for an university study, I'm doing some network test between two vm
> > using native linux kvm tool and connected via tap/virtio/vhost.
> > When I run my script (several consecutive iperf tcp and udp
> > execution), the first vm freeze with a message like: "hrtimer:
> > interrupt took * ns".
> > Is this a bug? (In order to complete the test i had to set the number
> > of guest cpu to 1)
> >
> > Do you know what is the expected throughput between two vm using virtio/vhost?
>
> I don't really use the tap interface so lets CC Asias. Which guest
> kernel are you using, btw?
>
Yup, Asias was using it, if my memory doesn't betray me. Also both -- host
and guest kernel versions might be useful to know. iirc we were emulating
rtc only while anything else passes through to kvm kernel driver.
Cyrill
next prev parent reply other threads:[~2012-03-08 15:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAMEokbQVoij_PLvCCUcB+1217f8KJ2zv93h0wZRVPReiDd3sSg@mail.gmail.com>
2012-03-08 14:32 ` native kvm tool hrtimer problem Daniele Carollo
2012-03-08 15:11 ` Pekka Enberg
2012-03-08 15:13 ` Cyrill Gorcunov [this message]
2012-03-08 15:31 ` Daniele Carollo
2012-03-08 15:51 ` Cyrill Gorcunov
2012-03-11 1:39 ` Asias He
2012-03-12 15:03 ` Daniele Carollo
2012-03-15 10:54 ` Asias He
2012-03-20 16:36 ` Daniele Carollo
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