From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 31 Jan 2001 20:53:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 31 Jan 2001 20:53:24 -0500 Received: from pizda.ninka.net ([216.101.162.242]:21397 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id ; Wed, 31 Jan 2001 20:53:16 -0500 From: "David S. Miller" MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <14968.49462.674977.825098@pizda.ninka.net> Date: Wed, 31 Jan 2001 17:51:50 -0800 (PST) To: Malcolm Beattie Cc: linux-kernel@vger.kernel.org, netdev@oss.sgi.com Subject: Re: [UPDATE] Fresh zerocopy patch on kernel.org In-Reply-To: <20010131152653.C13345@sable.ox.ac.uk> In-Reply-To: <14966.35438.429963.405587@pizda.ninka.net> <20010131152653.C13345@sable.ox.ac.uk> X-Mailer: VM 6.75 under 21.1 (patch 13) "Crater Lake" XEmacs Lucid Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Malcolm Beattie writes: > David S. Miller writes: > > > > At the usual place: > > > > ftp://ftp.kernel.org/pub/linux/kernel/people/davem/zerocopy-2.4.1-1.diff.gz > > Hmm, disappointing results here; maybe I've missed something. As discussed elsewhere there is a %10 to %15 performance hit for normal write()'s done with the new code. If you do your testing using sendfile() as the data source, you'll results ought to be wildly different and more encouraging. Later, David S. Miller davem@redhat.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/