From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [RFC] tcp: use order-3 pages in tcp_sendmsg() Date: Wed, 19 Sep 2012 13:56:55 -0400 (EDT) Message-ID: <20120919.135655.381209248813843140.davem@davemloft.net> References: <1347901493.26523.151.camel@edumazet-glaptop> <20120917.130732.1894375657044880827.davem@davemloft.net> <1348067659.26523.949.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: eric.dumazet@gmail.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:55821 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932804Ab2ISR46 (ORCPT ); Wed, 19 Sep 2012 13:56:58 -0400 In-Reply-To: <1348067659.26523.949.camel@edumazet-glaptop> Sender: netdev-owner@vger.kernel.org List-ID: From: Eric Dumazet Date: Wed, 19 Sep 2012 17:14:19 +0200 > I did some tests and got no problem so far, even using splice() [ this > one was tricky because it only deals with order-0 pages at this moment ] > > NIC tested : ixgbe, igb, bnx2x, tg3, mellanox mlx4 > > On loopback, performance of netperf goes from 31900 Mb/s to 38500 Mb/s, > thats a 20 % increase. That's really a lot more than I expected, nice.