From: "Michael S. Tsirkin"
Date: Sun, 22 Jul 2012 01:05:34 +0300
> I agree a small win in CPU use is nothing to write home about,
> I don't yet understand why the win is so small - macvtap has zero copy
> supported for a while and it has exactly same issues.
> I hope adding tun zerocopy support u
On Fri, Jul 20, 2012 at 05:49:02PM -0700, David Miller wrote:
> From: "Michael S. Tsirkin"
> Date: Fri, 20 Jul 2012 22:23:03 +0300
>
> > Same as with macvtap, I get single-percentage wins in CPU utilization
> > on guest to external from this patchset, and a performance regression on
> > guest to
From: "Michael S. Tsirkin"
Date: Fri, 20 Jul 2012 22:23:03 +0300
> Same as with macvtap, I get single-percentage wins in CPU utilization
> on guest to external from this patchset, and a performance regression on
> guest to host, so more work is needed until this feature can move out of
> experime
This adds support for experimental zero copy transmit to tun.
This includes some patches from Ian's patchset to support zerocopy with tun,
so it should help that work progress: we are still trying to figure out
how to make everything work properly with tcp but tun seems easier, and
it's helpful by
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