On Tue, Feb 01, 2011 at 01:32:35PM -0800, Shirley Ma wrote: > On Tue, 2011-02-01 at 23:24 +0200, Michael S. Tsirkin wrote: > > My theory is that the issue is not signalling. > > Rather, our queue fills up, then host handles > > one packet and sends an interrupt, and we > > immediately wake the queue. So the vq > > once it gets full, stays full. > > >From the printk debugging output, it might not be exactly the case. The > ring gets full, run a bit, then gets full, then run a bit, then full... Yes, but does it get even half empty in between? > > If you try my patch with bufs threshold set to e.g. > > half the vq, what we will do is send interrupt after we have processed > > half the vq. So host has half the vq to go, and guest has half the vq > > to fill. > > > > See? > > I am cleaning up my set up to run your patch ... > > Shirley > -- 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
