Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751384AbVJKGNv (ORCPT ); Tue, 11 Oct 2005 02:13:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751388AbVJKGNv (ORCPT ); Tue, 11 Oct 2005 02:13:51 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:38342 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S1751384AbVJKGNu (ORCPT ); Tue, 11 Oct 2005 02:13:50 -0400 Date: Tue, 11 Oct 2005 08:14:20 +0200 From: Ingo Molnar To: Mark Knecht Cc: chaosite@gmail.com, Daniel Walker , linux-kernel@vger.kernel.org, Lee Revell Subject: Re: Latency data - 2.6.14-rc3-rt13 Message-ID: <20051011061420.GA20074@elte.hu> References: <1128977359.18782.199.camel@c-67-188-6-232.hsd1.ca.comcast.net> <5bdc1c8b0510101412n714c4798v1482254f6f8e0386@mail.gmail.com> <5bdc1c8b0510101428o475d9dbct2e9bdcc6b46418c9@mail.gmail.com> <1128980674.18782.211.camel@c-67-188-6-232.hsd1.ca.comcast.net> <5bdc1c8b0510101509w4c74028apb6e69746b1b8b65b@mail.gmail.com> <1128983301.18782.215.camel@c-67-188-6-232.hsd1.ca.comcast.net> <5bdc1c8b0510101633lc45fbf8gd2677e5646dc6f93@mail.gmail.com> <5bdc1c8b0510101649s221ab437scc49d6a49269d6b@mail.gmail.com> <434B3803.2030803@gmail.com> <5bdc1c8b0510102145k3b05c00dm8e3e770c5eee2ee4@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5bdc1c8b0510102145k3b05c00dm8e3e770c5eee2ee4@mail.gmail.com> User-Agent: Mutt/1.4.2.1i X-ELTE-SpamScore: 0.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=0.0 required=5.9 tests=AWL autolearn=disabled SpamAssassin version=3.0.4 0.0 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 884 Lines: 20 * Mark Knecht wrote: > Anyway, these latencies seem understood at this point. They are just > the timer that you set in the kernel hacking section. No big deal. > However, none of the messages yet give any clues (that I understand) > as to the cause of the timing misses I'm seeing with 2.6.14-rc3-rt13. > I shall look into a 2.6.14-rc4-rtX tomorrow. do you have 64-bit userspace too? If you have 32-bit userspace then could you try running the x86 kernel? Generally the 64-bit kernel has less mature debugging options in the -rt tree: e.g. latency tracing itself doesnt work (due to gcc silliness). Ingo - 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/