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 06:26:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 10 Jan 2001 06:26:20 -0500 Received: from chiara.elte.hu ([157.181.150.200]:59404 "HELO chiara.elte.hu") by vger.kernel.org with SMTP id ; Wed, 10 Jan 2001 06:26:16 -0500 Date: Wed, 10 Jan 2001 12:25:52 +0100 (CET) From: Ingo Molnar Reply-To: To: Manfred Spraul Cc: Subject: Re: [PLEASE-TESTME] Zerocopy networking patch, 2.4.0-1 In-Reply-To: <3A5C2034.537B4C58@colorfullife.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 10 Jan 2001, Manfred Spraul wrote: > That means sendmsg() changes the page tables? I measures > smp_call_function on my Dual Pentium 350, and it took around 1950 cpu > ticks. well, this is a performance problem if you are using threads. For normal processes there is no need for a SMP cross-call, there TLB flushes are local only. Ingo - 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/