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[Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue noti
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify |
Date: |
Mon, 13 Dec 2010 15:35:38 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Dec 13, 2010 at 01:11:27PM +0000, Stefan Hajnoczi wrote:
> Fresh results:
>
> 192.168.0.1 - host (runs netperf)
> 192.168.0.2 - guest (runs netserver)
>
> host$ src/netperf -H 192.168.0.2 -- -m 200
>
> ioeventfd=on
> TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.0.2
> (192.168.0.2) port 0 AF_INET
> Recv Send Send
> Socket Socket Message Elapsed
> Size Size Size Time Throughput
> bytes bytes bytes secs. 10^6bits/sec
> 87380 16384 200 10.00 1759.25
>
> ioeventfd=off
> TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.0.2
> (192.168.0.2) port 0 AF_INET
> Recv Send Send
> Socket Socket Message Elapsed
> Size Size Size Time Throughput
> bytes bytes bytes secs. 10^6bits/sec
>
> 87380 16384 200 10.00 1757.15
>
> The results vary approx +/- 3% between runs.
>
> Invocation:
> $ x86_64-softmmu/qemu-system-x86_64 -m 4096 -enable-kvm -netdev
> type=tap,id=net0,ifname=tap0,script=no,downscript=no -device
> virtio-net-pci,netdev=net0,ioeventfd=on|off -vnc :0 -drive
> if=virtio,cache=none,file=$HOME/rhel6-autobench-raw.img
>
> I am running qemu.git with v5 patches, based off
> 36888c6335422f07bbc50bf3443a39f24b90c7c6.
>
> Host:
> 1 Quad-Core AMD Opteron(tm) Processor 2350 @ 2 GHz
> 8 GB RAM
> RHEL 6 host
>
> Next I will try the patches on latest qemu-kvm.git
>
> Stefan
One interesting thing is that I put virtio-net earlier on
command line. Since iobus scan is linear for now, I wonder if this might
possibly matter.
--
MST
- [Qemu-devel] [PATCH v5 3/4] virtio-pci: Don't use ioeventfd on old kernels, (continued)
- [Qemu-devel] [PATCH v5 3/4] virtio-pci: Don't use ioeventfd on old kernels, Stefan Hajnoczi, 2010/12/12
- [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2010/12/12
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2010/12/12
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2010/12/12
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2010/12/12
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2010/12/12
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2010/12/12
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify,
Michael S. Tsirkin <=
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Stefan Hajnoczi, 2010/12/13
- [Qemu-devel] Re: [PATCH v5 0/4] virtio: Use ioeventfd for virtqueue notify, Michael S. Tsirkin, 2010/12/13