On Fri, Nov 2, 2012 at 3:48 PM, Michael S. Tsirkin <[email protected]> wrote: > On Fri, Nov 02, 2012 at 11:18:18AM +0100, Stefan Hajnoczi wrote: >> On Thu, Nov 1, 2012 at 5:07 PM, Michael S. Tsirkin <[email protected]> wrote: >> > Commit 0d8d7690850eb0cf2b2b60933cf47669a6b6f18f introduced >> > a regression in virtio-net performance because it looks >> > into the ring aggressively while we really only care >> > about a single packet worth of buffers. >> > To fix, add parameters limiting lookahead, and >> > use in virtqueue_avail_bytes. >> > >> > Signed-off-by: Michael S. Tsirkin <[email protected]> >> > Reported-by: Edivaldo de Araujo Pereira <[email protected]> >> >> Nice, much simpler than the ideas I had. >> >> Reviewed-by: Stefan Hajnoczi <[email protected]> > > Anthony could you apply this out of band please so this stops > biting people?
Especially for the 1.3 release so that we don't have a virtio performance regression. Stefan
