Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760625AbWLJKUW (ORCPT ); Sun, 10 Dec 2006 05:20:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760630AbWLJKUW (ORCPT ); Sun, 10 Dec 2006 05:20:22 -0500 Received: from outpost.ds9a.nl ([213.244.168.210]:51905 "EHLO outpost.ds9a.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760625AbWLJKUV (ORCPT ); Sun, 10 Dec 2006 05:20:21 -0500 Date: Sun, 10 Dec 2006 11:20:20 +0100 From: bert hubert To: Amit Choudhary Cc: Linux Kernel Subject: Re: [PATCH] [DISCUSS] Optimizing linux applications with the help of the kernel. Message-ID: <20061210102019.GA27748@outpost.ds9a.nl> Mail-Followup-To: bert hubert , Amit Choudhary , Linux Kernel References: <464448.56474.qm@web55602.mail.re4.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <464448.56474.qm@web55602.mail.re4.yahoo.com> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 745 Lines: 16 On Sun, Dec 10, 2006 at 02:06:49AM -0800, Amit Choudhary wrote: > In both these cases the same data is coming from kernel_to_user and then from user_to_kernel. If > this can be short-circuited, that is, from kernel_to_kernel then the performance can be increased > a lot. Google on 'splice linux'. It can't do what you want right now exactly, but it might. -- http://www.PowerDNS.com Open source, database driven DNS Software http://netherlabs.nl Open and Closed source services - 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/