Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964784AbWCTNfO (ORCPT ); Mon, 20 Mar 2006 08:35:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964779AbWCTNfO (ORCPT ); Mon, 20 Mar 2006 08:35:14 -0500 Received: from [194.90.237.34] ([194.90.237.34]:9935 "EHLO mtlexch01.mtl.com") by vger.kernel.org with ESMTP id S964777AbWCTNfN (ORCPT ); Mon, 20 Mar 2006 08:35:13 -0500 Date: Mon, 20 Mar 2006 15:35:54 +0200 From: "Michael S. Tsirkin" To: Arjan van de Ven Cc: Lennert Buytenhek , "David S. Miller" , rick.jones2@hp.com, netdev@vger.kernel.org, rdreier@cisco.com, linux-kernel@vger.kernel.org, openib-general@openib.org Subject: Re: TSO and IPoIB performance degradation Message-ID: <20060320133554.GA29929@mellanox.co.il> Reply-To: "Michael S. Tsirkin" References: <20060320090629.GA11352@mellanox.co.il> <20060320.015500.72136710.davem@davemloft.net> <20060320102234.GV29929@mellanox.co.il> <20060320.023704.70907203.davem@davemloft.net> <20060320112753.GX29929@mellanox.co.il> <1142855223.3114.30.camel@laptopd505.fenrus.org> <20060320114933.GA3058@xi.wantstofly.org> <1142855615.3114.33.camel@laptopd505.fenrus.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1142855615.3114.33.camel@laptopd505.fenrus.org> User-Agent: Mutt/1.4.2.1i X-OriginalArrivalTime: 20 Mar 2006 13:37:50.0406 (UTC) FILETIME=[7B5F7E60:01C64C23] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 764 Lines: 19 Quoting Arjan van de Ven : > > I read it as if he was proposing to have a sysctl knob to turn off > > TCP congestion control completely (which has so many issues it's not > > even funny.) > > owww that's so bad I didn't even consider that No, I think that comment was taken out of thread context. We were talking about stretching ACKs - while avoiding stretch ACKs is important for TCP congestion control, it's not the only mechanism. -- Michael S. Tsirkin Staff Engineer, Mellanox Technologies - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/