On Wed, Oct 28, 2009 at 09:45:37AM -0700, Shirley Ma wrote: > Hello Michael, > > On Wed, 2009-10-28 at 17:39 +0200, Michael S. Tsirkin wrote: > > Here's another hack to try. It will break raw sockets, > > but just as a test: > > This patch looks better than previous one for guest to host TCP_STREAM > performance. The transmission queue full still exists, but TCP_STREAM > results is 43xxMb/s (userspace is about 3500Mb/s). When I increase the > transmission queue size to 1K, > The performance burst up to 53xxMb/s. But > some runs I still hit several transmission queue full in 60 secs run > even with 1K queue size.
what exactly do you mean by transmission queue size? tx_queue_len? I think what should help with transmission queue full is actually sndbuf parameter for tap in qemu. > > Thanks > Shirley -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
