From: "Michael S. Tsirkin" <mst@redhat.com>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: John Fastabend <john.fastabend@gmail.com>,
jasowang@redhat.com, john.r.fastabend@intel.com,
netdev@vger.kernel.org, daniel@iogearbox.net
Subject: Re: XDP offload to hypervisor
Date: Tue, 24 Jan 2017 05:33:37 +0200 [thread overview]
Message-ID: <20170124053207-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <20170124010201.GB60699@ast-mbp.thefacebook.com>
On Mon, Jan 23, 2017 at 05:02:02PM -0800, Alexei Starovoitov wrote:
> Frankly I don't understand the whole virtio nit picking that was happening.
> imo virtio+xdp by itself is only useful for debugging, development and testing
> of xdp programs in a VM. The discussion about performance of virtio+xdp
> will only be meaningful when corresponding host part is done.
> Likely in the form of vhost extensions and may be driver changes.
> Trying to optimize virtio+xdp when host is doing traditional skb+vhost
> isn't going to be impactful.
Well if packets can be dropped without a host/guest
transition then yes, that will have an impact even
with traditional skbs.
--
MST
next prev parent reply other threads:[~2017-01-24 3:33 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-23 21:40 XDP offload to hypervisor Michael S. Tsirkin
2017-01-23 21:56 ` John Fastabend
2017-01-23 22:26 ` Michael S. Tsirkin
2017-01-25 2:45 ` Jason Wang
2017-01-25 3:17 ` Michael S. Tsirkin
2017-01-24 1:02 ` Alexei Starovoitov
2017-01-24 2:47 ` Michael S. Tsirkin
2017-01-24 3:33 ` Michael S. Tsirkin [this message]
2017-01-24 3:50 ` Alexei Starovoitov
2017-01-24 4:35 ` Michael S. Tsirkin
2017-01-25 2:51 ` Jason Wang
2017-01-25 3:03 ` Jason Wang
2017-01-25 2:41 ` Jason Wang
2017-01-25 3:12 ` Michael S. Tsirkin
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