From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net-next-2.6] rps: consistent rxhash Date: Tue, 20 Apr 2010 14:41:06 -0700 (PDT) Message-ID: <20100420.144106.118596093.davem@davemloft.net> References: <1271769404.7895.10.camel@edumazet-laptop> <4BCDB425.9050007@lastsummer.de> <1271775421.7895.19.camel@edumazet-laptop> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: franco@lastsummer.de, xiaosuo@gmail.com, therbert@google.com, netdev@vger.kernel.org To: eric.dumazet@gmail.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:59781 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752301Ab0DTVlD (ORCPT ); Tue, 20 Apr 2010 17:41:03 -0400 In-Reply-To: <1271775421.7895.19.camel@edumazet-laptop> Sender: netdev-owner@vger.kernel.org List-ID: From: Eric Dumazet Date: Tue, 20 Apr 2010 16:57:01 +0200 > I know many applications using TCP on loopback, they are real :) This is all true and I support your hashing patch and all of that. But if we really want TCP over loopback to go fast, there are much better ways to do this. Eric, do you remember that "TCP friends" rough patch I sent you last year that essentailly made TCP sockets over loopback behave like AF_UNIX ones and just queue the SKBs directly to the destination socket without doing any protocol work? If we ever got that working, tbench performance would become impressive :)