From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 15 Feb 2001 16:29:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 15 Feb 2001 16:28:57 -0500 Received: from colorfullife.com ([216.156.138.34]:33037 "EHLO colorfullife.com") by vger.kernel.org with ESMTP id ; Thu, 15 Feb 2001 16:28:48 -0500 Message-ID: <3A8C4A27.9AE0F7D9@colorfullife.com> Date: Thu, 15 Feb 2001 22:29:11 +0100 From: Manfred Spraul X-Mailer: Mozilla 4.75 [en] (X11; U; Linux 2.4.1-ac13 i686) X-Accept-Language: en, de MIME-Version: 1.0 To: Linus Torvalds , linux-kernel@vger.kernel.org Subject: Re: x86 ptep_get_and_clear question In-Reply-To: <3A8C254F.17334682@colorfullife.com> <200102151905.LAA62688@google.engr.sgi.com> <20010215201945.A2505@pcep-jamie.cern.ch> <96heaj$bvs$1@penguin.transmeta.com> <3A8C499A.E0370F63@colorfullife.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Manfred Spraul wrote: > > I just benchmarked a single flush_tlb_page(). > > Pentium II 350: ~ 2000 cpu ticks. > Pentium III 850: ~ 3000 cpu ticks. > I forgot the important part: SMP, including a smp_call_function() IPI. IIRC Ingo wrote that a local 'invplg' is around 100 ticks. -- Manfred