On 12/01/2015 10:43 PM, Michael S. Tsirkin wrote: > On Tue, Dec 01, 2015 at 01:17:49PM +0800, Jason Wang wrote: >> >> On 11/30/2015 06:44 PM, Michael S. Tsirkin wrote: >>> On Wed, Nov 25, 2015 at 03:11:29PM +0800, Jason Wang wrote: >>>>> This patch tries to poll for new added tx buffer or socket receive >>>>> queue for a while at the end of tx/rx processing. The maximum time >>>>> spent on polling were specified through a new kind of vring ioctl. >>>>> >>>>> Signed-off-by: Jason Wang <jasow...@redhat.com> >>> One further enhancement would be to actually poll >>> the underlying device. This should be reasonably >>> straight-forward with macvtap (especially in the >>> passthrough mode). >>> >>> >> Yes, it is. I have some patches to do this by replacing >> skb_queue_empty() with sk_busy_loop() but for tap. > We probably don't want to do this unconditionally, though. > >> Tests does not show >> any improvement but some regression. > Did you add code to call sk_mark_napi_id on tap then? > sk_busy_loop won't do anything useful without.
Yes I did. Probably something wrong elsewhere. > >> Maybe it's better to test macvtap. > Same thing ... > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html