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Message-Id: <20140707.192519.1302110449886053251.davem@davemloft.net> Date: Mon, 07 Jul 2014 19:25:19 -0700 (PDT) From: David Miller <davem@...emloft.net> To: therbert@...gle.com Cc: netdev@...r.kernel.org Subject: Re: [PATCH v2] net: Performance fix for process_backlog From: Tom Herbert <therbert@...gle.com> Date: Mon, 30 Jun 2014 09:50:40 -0700 (PDT) > In process_backlog the input_pkt_queue is only checked once for new > packets and quota is artificially reduced to reflect precisely the > number of packets on the input_pkt_queue so that the loop exits > appropriately. > > This patches changes the behavior to be more straightforward and > less convoluted. Packets are processed until either the quota > is met or there are no more packets to process. > > This patch seems to provide a small, but noticeable performance > improvement. The performance improvement is a result of staying > in the process_backlog loop longer which can reduce number of IPI's. > > Performance data using super_netperf TCP_RR with 200 flows: ... > Signed-off-by: Tom Herbert <therbert@...gle.com> Applied, thanks Tom. -- 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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