Thank you very much!
I will post a patch tomorrow.
--Best wishes!
//Zhang Jie
-----Original Message-----
From: Michael S. Tsirkin [mailto:m...@redhat.com]
Sent: Thursday, April 24, 2014 7:45 PM
To: Zhangjie (HZ)
Cc: jasow...@redhat.com; Qinchuanyu; Liuyongan; kvm@vger.kernel.org;
net...@vger.kernel.org
Subject: Re: Change dev->needed_headroom of virtio_net to make
Patch"virtio-net: put virtio net header inline with data"work better
On Thu, Apr 24, 2014 at 10:19:58AM +0000, Zhangjie (HZ) wrote:
> Hi!
>
> Patch “virtio-net: put virtio net header inline with data” , has a
> notable improvement for TCP packages.
>
> But UDP packages from virtio_net nic, do not have enough head room. I
> wonder if we can set dev->needed_headroom
>
> to the size of virtio net header, so as to put the header in. By doing
> this, udp get about 5% improvement in bandwidth.
Sounds like a reasonable thing to do.
Want to post the patch so people can try it out?
>
>
> --
>
> Thanks,
>
> //Zhang Jie
>
>
>
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