From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261684AbVGTAXL (ORCPT ); Tue, 19 Jul 2005 20:23:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261720AbVGTAXL (ORCPT ); Tue, 19 Jul 2005 20:23:11 -0400 Received: from gateway-1237.mvista.com ([12.44.186.158]:49657 "EHLO av.mvista.com") by vger.kernel.org with ESMTP id S261684AbVGTAXK (ORCPT ); Tue, 19 Jul 2005 20:23:10 -0400 Subject: Re: Interbench real time benchmark results From: Daniel Walker Reply-To: dwalker@mvista.com To: Con Kolivas Cc: Ingo Molnar , linux-kernel@vger.kernel.org, ck@vds.kolivas.org In-Reply-To: <200507200816.11386.kernel@kolivas.org> References: <200507200816.11386.kernel@kolivas.org> Content-Type: text/plain Organization: MontaVista Date: Tue, 19 Jul 2005 17:23:03 -0700 Message-Id: <1121818983.26927.74.camel@dhcp153.mvista.com> Mime-Version: 1.0 X-Mailer: Evolution 2.0.2 (2.0.2-3) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2005-07-20 at 08:16 +1000, Con Kolivas wrote: > Interestingly the average latencies are slightly higher (in the miniscule <2us > range), but the maximum latencies are excellently bound to 25us. > > The results are quite reproducible. I would guess that the average latencies are tunable .. In this case if any of the benchmarks are dependent on specific interrupts , or ksoftirqd, you can tune the priority of the associate IRQ threads , or ksoftirqd, to get similar averages to 2.6.12 .. Daniel