From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: [ofa-general] Re: [PATCH 2/3][NET_BATCH] net core use batching Date: Wed, 10 Oct 2007 18:02:11 +0200 Message-ID: <20071010160211.GA14239@one.firstfloor.org> References: <20071010.034446.85819294.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: johnpol@2ka.mipt.ru, Robert.Olsson@data.slu.se, herbert@gondor.apana.org.au, jeff@garzik.org, kaber@trash.net, netdev@vger.kernel.org, rdreier@cisco.com, mchan@broadcom.com, hadi@cyberus.ca, mcarlson@broadcom.com, gaagaan@gmail.com, andi@firstfloor.org, general@lists.openfabrics.org, jagana@us.ibm.com, tgraf@suug.ch, randy.dunlap@oracle.com, shemminger@linux-foundation.org, David Miller , sri@us.ibm.com To: "Waskiewicz Jr, Peter P" Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: general-bounces@lists.openfabrics.org Errors-To: general-bounces@lists.openfabrics.org List-Id: netdev.vger.kernel.org > We've done similar testing with ixgbe to push maximum descriptor counts, > and we lost performance very quickly in the same range you're quoting on > NIU. Did you try it with WC writes to the ring or CLFLUSH? -Andi