From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [PATCH net-next-2.6] rps: consistent rxhash Date: Tue, 20 Apr 2010 16:57:01 +0200 Message-ID: <1271775421.7895.19.camel@edumazet-laptop> References: <1271452358.16881.4486.camel@edumazet-laptop> <1271520633.16881.4754.camel@edumazet-laptop> <20100419.130905.210660275.davem@davemloft.net> <20100419.132318.192086187.davem@davemloft.net> <1271709121.3845.94.camel@edumazet-laptop> <1271743164.3845.128.camel@edumazet-laptop> <1271750198.3845.216.camel@edumazet-laptop> <4BCDA2B5.4060609@lastsummer.de> <1271769404.7895.10.camel@edumazet-laptop> <4BCDB425.9050007@lastsummer.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Changli Gao , David Miller , therbert@google.com, netdev@vger.kernel.org To: Franco Fichtner Return-path: Received: from mail-bw0-f219.google.com ([209.85.218.219]:49145 "EHLO mail-bw0-f219.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750718Ab0DTO5I (ORCPT ); Tue, 20 Apr 2010 10:57:08 -0400 Received: by bwz19 with SMTP id 19so51715bwz.21 for ; Tue, 20 Apr 2010 07:57:07 -0700 (PDT) In-Reply-To: <4BCDB425.9050007@lastsummer.de> Sender: netdev-owner@vger.kernel.org List-ID: Le mardi 20 avril 2010 =C3=A0 16:03 +0200, Franco Fichtner a =C3=A9crit= : >=20 > It is funny, but I fail to see the big picture of the > firewall / conntrack application here. It looks like > this is needed for local netperf tests to impress, but > it's a quite special use case, isn't it? I know many applications using TCP on loopback, they are real :) What I find 'funny' are not the tbench results, but the fact that RFS can give pretty good hints to process scheduler, something that might b= e good to investigate by scheduler specialists. In the meantime, if some admin finds that setting RFS on loopback can boost by 10% its application, why not ?