From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: TSO and IPoIB performance degradation Date: Mon, 20 Mar 2006 15:35:54 +0200 Message-ID: <20060320133554.GA29929@mellanox.co.il> 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 Cc: netdev@vger.kernel.org, rdreier@cisco.com, rick.jones2@hp.com, linux-kernel@vger.kernel.org, openib-general@openib.org, "David S. Miller" , Lennert Buytenhek Return-path: To: Arjan van de Ven Content-Disposition: inline In-Reply-To: <1142855615.3114.33.camel@laptopd505.fenrus.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: openib-general-bounces@openib.org Errors-To: openib-general-bounces@openib.org List-Id: netdev.vger.kernel.org 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