On Sun, Oct 03, 2010 at 04:21:57PM +0200, Avi Kivity wrote: > On 10/03/2010 03:51 PM, Michael S. Tsirkin wrote: > >On Sun, Oct 03, 2010 at 01:01:59PM +0200, Avi Kivity wrote: > >> > > >> >Guest to Host TCP_STREAM throughput(Mb/sec) > >> >------------------------------------------- > >> >Msg Size vhost-net virtio-net virtio-net/ioeventfd > >> >65536 12755 6430 7590 > >> >16384 8499 3084 5764 > >> > 4096 4723 1578 3659 > >> > 1024 1827 981 2060 > >> > >> Even more impressive (expected since the copying, which isn't > >> present for block, is now shunted off into an iothread). > >> > >> On the last test you even exceeded vhost-net. Any theories how/why? > >> > >> Again, efficiency numbers would be interesting. > >> > >> >Host to Guest TCP_STREAM throughput(Mb/sec) > >> >------------------------------------------- > >> >Msg Size vhost-net virtio-net virtio-net/ioeventfd > >> >65536 11156 5790 5853 > >> >16384 10787 5575 5691 > >> > 4096 10452 5556 4277 > >> > 1024 4437 3671 5277 > >> > >> Here you exceed vhost-net, too. > > > >This is with small packets- I suspect this is the extra > >per interrupt overhead that eventfd has. > > This is using eventfd as well. Sorry, I meant irqfd. > -- > error compiling committee.c: too many arguments to function -- 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
