On Wed, Mar 09, 2011 at 08:51:33AM -0800, Shirley Ma wrote: > On Wed, 2011-03-09 at 10:09 -0600, Tom Lendacky wrote: > > > > Vhost is receiving a lot of notifications for packets that are to > > be > > > > transmitted (over 60% of the packets generate a kick_notify). > > This is guest TX send notification when vhost enables notification. > > In TCP_STREAM test, vhost exits from reaching NAPI WEIGHT, You mean virtio? > it rarely > enables the notification, vhost re-enters handle_tx from NAPI poll, Does NAPI really call handle_tx? Not rx? > so > guest doesn't do much kick_notify. > > In multiple TCP_RR test, seems vhost exits from nothing to send in TX vq > very often, so it enables notification most of the time. > > 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
