From: Alexandre DERUMIER <aderumier@odiso.com>
To: Peter Lieven <pl@dlhnet.de>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
Stefan Hajnoczi <stefanha@gmail.com>,
qemu-devel@nongnu.org, Jan Kiszka <jan.kiszka@web.de>,
Peter Lieven <lieven-lists@dlhnet.de>,
Dietmar Maurer <dietmar@proxmox.com>
Subject: Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores
Date: Sun, 09 Dec 2012 19:38:17 +0100 (CET) [thread overview]
Message-ID: <fea435db-ce59-4256-9f26-3a7b3b9a542d@mailpro> (raw)
In-Reply-To: <32F34A44-C8C1-4D2C-9295-45BEECC6F7E2@dlhnet.de>
>>Have you had any further progress on this regression/problem?
Hi Peter,
I didn't re-tested myself,
but a proxmox user who's have the problem with qemu-kvm 1.2, with windows guest and linux guest,
don't have the problem anymore with qemu 1.3.
http://forum.proxmox.com/threads/12157-Win2003R2-in-KVM-VM-is-slow-in-PVE-2-2-when-multiply-CPU-cores-allowed
I'll try to redone test myself this week
Regards,
Alexandre
----- Mail original -----
De: "Peter Lieven" <pl@dlhnet.de>
À: "Alexandre DERUMIER" <aderumier@odiso.com>
Cc: "Dietmar Maurer" <dietmar@proxmox.com>, "Stefan Hajnoczi" <stefanha@gmail.com>, "Jan Kiszka" <jan.kiszka@web.de>, qemu-devel@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>, "Peter Lieven" <lieven-lists@dlhnet.de>
Envoyé: Lundi 3 Décembre 2012 12:23:11
Objet: Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores
Am 16.11.2012 um 12:00 schrieb Alexandre DERUMIER <aderumier@odiso.com>:
>>> While trying to reproduce the bug, we just detected that it depends on the hardware (mainboard) you run on.
>>>
>>> Sigh :-/
>
> Hi,
>
> I can reproduce the bug on all my dell servers,differents generation (R710 (intel),R815 (amd), 2950 (intel).
>
> They all use broadcom bnx2 network card (don't know if it can be related)
>
> host kernel : rhel 63 with 2.6.32 kernel
>
> guest kernel : 2.6.32 (debian squeeze, ubuntu).
>
> No problem with guest kernel 3.2
Have you had any further progress on this regression/problem?
Thanks,
Peter
>
>
>
>
> ----- Mail original -----
>
> De: "Dietmar Maurer" <dietmar@proxmox.com>
> À: "Peter Lieven" <lieven-lists@dlhnet.de>
> Cc: "Stefan Hajnoczi" <stefanha@gmail.com>, "Peter Lieven" <pl@dlhnet.de>, "Jan Kiszka" <jan.kiszka@web.de>, qemu-devel@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>
> Envoyé: Vendredi 16 Novembre 2012 11:44:26
> Objet: Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores
>
>>> I only tested with RHEL6.3 kernel on host.
>>
>> can you check if there is a difference on interrupt delivery between those
>> two?
>>
>> cat /proc/interrupts should be sufficient after some traffic has flown.
>
> While trying to reproduce the bug, we just detected that it depends on the hardware (mainboard) you run on.
>
> Sigh :-/
next prev parent reply other threads:[~2012-12-09 18:38 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-05 11:51 [Qemu-devel] slow virtio network with vhost=on and multiple cores Dietmar Maurer
2012-11-05 12:36 ` Stefan Hajnoczi
2012-11-05 15:01 ` Dietmar Maurer
2012-11-06 6:12 ` Dietmar Maurer
2012-11-06 7:46 ` Peter Lieven
2012-11-06 7:51 ` Dietmar Maurer
2012-11-06 9:01 ` Dietmar Maurer
2012-11-06 9:26 ` Jan Kiszka
2012-11-06 9:46 ` Dietmar Maurer
2012-11-06 10:12 ` Jan Kiszka
2012-11-06 11:24 ` Dietmar Maurer
2012-11-08 9:39 ` Jan Kiszka
2012-11-08 10:55 ` Peter Lieven
2012-11-08 12:03 ` Dietmar Maurer
2012-11-08 15:02 ` Peter Lieven
2012-11-09 5:55 ` Dietmar Maurer
2012-11-09 17:27 ` Peter Lieven
2012-11-09 17:51 ` Peter Lieven
2012-11-09 18:03 ` Peter Lieven
2012-11-13 11:44 ` Peter Lieven
2012-11-13 11:49 ` Peter Lieven
2012-11-13 16:22 ` Michael S. Tsirkin
2012-11-13 16:21 ` Peter Lieven
2012-11-13 16:26 ` Michael S. Tsirkin
2012-11-13 16:27 ` Peter Lieven
2012-11-13 16:59 ` Dietmar Maurer
2012-11-13 17:03 ` Michael S. Tsirkin
2012-11-13 16:33 ` Michael S. Tsirkin
2012-11-13 16:35 ` Peter Lieven
2012-11-13 16:46 ` Michael S. Tsirkin
2012-11-13 17:03 ` Dietmar Maurer
2012-11-13 17:07 ` Michael S. Tsirkin
2012-11-13 17:38 ` Dietmar Maurer
2012-11-15 18:26 ` Peter Lieven
2012-11-16 10:44 ` Dietmar Maurer
2012-11-16 11:00 ` Alexandre DERUMIER
2012-12-03 11:23 ` Peter Lieven
2012-12-09 18:38 ` Alexandre DERUMIER [this message]
2013-03-14 9:22 ` Davide Guerri
2013-03-14 10:43 ` Alexandre DERUMIER
2013-03-14 17:50 ` Michael S. Tsirkin
2013-03-14 18:15 ` Davide Guerri
2013-03-14 18:21 ` Peter Lieven
2013-03-14 23:04 ` Davide Guerri
2013-03-15 7:23 ` Peter Lieven
2013-03-17 9:08 ` Michael S. Tsirkin
2013-03-18 9:50 ` Alexandre DERUMIER
2013-03-18 9:53 ` Michael S. Tsirkin
2013-03-25 13:34 ` Peter Lieven
2012-11-19 13:49 ` Peter Lieven
2012-11-06 6:48 ` Dietmar Maurer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=fea435db-ce59-4256-9f26-3a7b3b9a542d@mailpro \
--to=aderumier@odiso.com \
--cc=dietmar@proxmox.com \
--cc=jan.kiszka@web.de \
--cc=lieven-lists@dlhnet.de \
--cc=mst@redhat.com \
--cc=pl@dlhnet.de \
--cc=qemu-devel@nongnu.org \
--cc=stefanha@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.