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, 10 Jan 2001 03:50:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 10 Jan 2001 03:49:58 -0500 Received: from pizda.ninka.net ([216.101.162.242]:44429 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id ; Wed, 10 Jan 2001 03:49:52 -0500 Date: Wed, 10 Jan 2001 00:31:09 -0800 Message-Id: <200101100831.AAA18269@pizda.ninka.net> From: "David S. Miller" To: manfred@colorfullife.com CC: mingo@elte.hu, linux-kernel@vger.kernel.org In-Reply-To: <3A5C2034.537B4C58@colorfullife.com> (message from Manfred Spraul on Wed, 10 Jan 2001 09:41:24 +0100) Subject: Re: [PLEASE-TESTME] Zerocopy networking patch, 2.4.0-1 In-Reply-To: <3A5C2034.537B4C58@colorfullife.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Date: Wed, 10 Jan 2001 09:41:24 +0100 From: Manfred Spraul That means sendmsg() changes the page tables? Not in the zerocopy patch I am proposing and asking people to test. I stated in another email that MSG_NOCOPY was considered experimental and thus left out of my patches. I measures smp_call_function on my Dual Pentium 350, and it took around 1950 cpu ticks. And this is one of several reasons why the MSG_NOCOPY facility is considered experimental. 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/