Messages in this thread | | | Date | Mon, 17 May 2010 21:08:32 -0700 (PDT) | Subject | Re: [PATCH] vhost-net: utilize PUBLISH_USED_IDX feature | From | David Miller <> |
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From: "Michael S. Tsirkin" <mst@redhat.com> Date: Tue, 18 May 2010 04:19:31 +0300
> With PUBLISH_USED_IDX, guest tells us which used entries > it has consumed. This can be used to reduce the number > of interrupts: after we write a used entry, if the guest has not yet > consumed the previous entry, or if the guest has already consumed the > new entry, we do not need to interrupt. > This imporves bandwidth by 30% under some workflows. > > Signed-off-by: Michael S. Tsirkin <mst@redhat.com> > --- > > Rusty, Dave, this patch depends on the patch > "virtio: put last seen used index into ring itself" > which is currently destined at Rusty's tree. > Rusty, if you are taking that one for 2.6.35, please > take this one as well. > Dave, any objections?
None:
Acked-by: David S. Miller <davem@davemloft.net>
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