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Date: Fri, 12 Sep 2014 18:19:25 -0400 (EDT) From: David Miller <davem@...emloft.net> To: sowmini.varadhan@...cle.com Cc: raghuram.kothakota@...cle.com, netdev@...r.kernel.org, bob.picco@...cle.com Subject: Re: [PATCHv3 net-next] sunvnet: Avoid sending superfluous LDC messages. From: Sowmini Varadhan <sowmini.varadhan@...cle.com> Date: Thu, 11 Sep 2014 09:57:22 -0400 > When sending out a burst of packets across multiple descriptors, > it is sufficient to send one LDC "start" trigger for > the first descriptor, so do not send an LDC "start" for every > pass through vnet_start_xmit. Similarly, it is sufficient to send > one "DRING_STOPPED" trigger for the last dring (and if that > fails, hold off and send the trigger later). > > Optimizations to the number of LDC messages helps avoid > filling up the LDC channel with superfluous LDC messages > that risk triggering flow-control on the channel, > and also boosts performance. > > Signed-off-by: Sowmini Varadhan <sowmini.varadhan@...cle.com> > Acked-by: Raghuram Kothakota <raghuram.kothakota@...cle.com> Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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