Received: with ECARTIS (v1.0.0; list netdev); Wed, 23 Oct 2002 06:09:54 -0700 (PDT) Received: from rth.ninka.net (rth.ninka.net [216.101.162.244]) by oss.sgi.com (8.12.5/8.12.5) with SMTP id g9ND9quR021972 for ; Wed, 23 Oct 2002 06:09:52 -0700 Received: from rth.ninka.net (localhost.localdomain [127.0.0.1]) by rth.ninka.net (8.12.5/8.12.5) with ESMTP id g9NDLnRU006006; Wed, 23 Oct 2002 06:21:49 -0700 Received: (from davem@localhost) by rth.ninka.net (8.12.5/8.12.5/Submit) id g9NDLnqU006004; Wed, 23 Oct 2002 06:21:49 -0700 Subject: Re: [RESEND] tuning linux for high network performance? From: "David S. Miller" To: bert hubert Cc: Roy Sigurd Karlsbakk , netdev@oss.sgi.com, Kernel mailing list In-Reply-To: <20021023130101.GA646@outpost.ds9a.nl> References: <200210231218.18733.roy@karlsbakk.net> <200210231306.18422.roy@karlsbakk.net> <20021023130101.GA646@outpost.ds9a.nl> Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Mailer: Ximian Evolution 1.0.8 (1.0.8-10) Date: 23 Oct 2002 06:21:48 -0700 Message-Id: <1035379308.5950.3.camel@rth.ninka.net> Mime-Version: 1.0 X-archive-position: 899 X-ecartis-version: Ecartis v1.0.0 Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com X-original-sender: davem@rth.ninka.net Precedence: bulk X-list: netdev On Wed, 2002-10-23 at 06:01, bert hubert wrote: > Also mention that you have an e1000 card which > does not do outgoing checksumming. The e1000 can very well do hardware checksumming on transmit. The missing piece of the puzzle is that his application is not using sendfile(), without which no transmit checksum offload can take place.