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Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores
From: |
Peter Lieven |
Subject: |
Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores |
Date: |
Thu, 8 Nov 2012 16:02:23 +0100 |
User-agent: |
SquirrelMail/1.4.21 |
Dietmar Maurer wrote:
>> Meanwhile I quickly tried to reproduce but didn't succeed so far
>> (>10GBit
>> between host and guest with vhost=on and 2 guest cores).
>> However, I finally realized that we are talking about a pretty special
>> host
>> kernel which I don't have around. I guess this is better dealt with by
>> Red Hat
>> folks. Specifically, they should know what features that kernel exposes
>> and
>> what it lacks.
>
> You can also reproduce the bug with Ubuntu 12.04 on the host - it is not
> red-hat related.
Dietmar, how is the speed if you specify --machine pc,kernel_irqchip=off
as cmdline option to qemu-kvm-1.2.0?
Peter
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, (continued)
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Peter Lieven, 2012/11/06
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Dietmar Maurer, 2012/11/06
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Dietmar Maurer, 2012/11/06
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Jan Kiszka, 2012/11/06
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Dietmar Maurer, 2012/11/06
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Jan Kiszka, 2012/11/06
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Dietmar Maurer, 2012/11/06
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Jan Kiszka, 2012/11/08
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Peter Lieven, 2012/11/08
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Dietmar Maurer, 2012/11/08
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores,
Peter Lieven <=
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Dietmar Maurer, 2012/11/09
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Peter Lieven, 2012/11/09
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Peter Lieven, 2012/11/09
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Peter Lieven, 2012/11/09
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Peter Lieven, 2012/11/13
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Michael S. Tsirkin, 2012/11/13
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Peter Lieven, 2012/11/13
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Michael S. Tsirkin, 2012/11/13
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Peter Lieven, 2012/11/13
- Re: [Qemu-devel] slow virtio network with vhost=on and multiple cores, Dietmar Maurer, 2012/11/13