On Sun, 2011-11-13 at 17:00 +0200, Sasha Levin wrote: > On Sun, 2011-11-13 at 12:24 +0200, Michael S. Tsirkin wrote: > > On Sat, Nov 12, 2011 at 12:12:01AM +0200, Sasha Levin wrote: > > > This is a patch based on Krishna Kumar's patch series which implements > > > multiple VQ support for virtio-net. > > > > > > The patch was tested with ver3 of the patch. > > > > > > Cc: Krishna Kumar <krkumar2@xxxxxxxxxx> > > > Cc: Michael S. Tsirkin <mst@xxxxxxxxxx> > > > Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx> > > > Cc: virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx > > > Cc: netdev@xxxxxxxxxxxxxxx > > > Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx> > > > > Any performance numbers? > > I tried finding a box with more than two cores so I could test it on > something like that as well. > > From what I see this patch causes a performance regression on my 2 core > box. > [snip] After discussing it with Michael, we found out that for a single TCP flow the guest signals the same TX VQ, but the RX VQ keeps changing - which means that theres missing host-guest synchronization of hash flow. -- Sasha. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
