Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262011AbVATAwN (ORCPT ); Wed, 19 Jan 2005 19:52:13 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262012AbVATAwN (ORCPT ); Wed, 19 Jan 2005 19:52:13 -0500 Received: from mail08.syd.optusnet.com.au ([211.29.132.189]:31675 "EHLO mail08.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S262011AbVATAwG (ORCPT ); Wed, 19 Jan 2005 19:52:06 -0500 Message-ID: <41EF00ED.4070908@kolivas.org> Date: Thu, 20 Jan 2005 11:53:01 +1100 From: Con Kolivas User-Agent: Mozilla Thunderbird 1.0 (X11/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: joq@io.com Cc: linux , Ingo Molnar , rlrevell@joe-job.com, paul@linuxaudiosystems.com, CK Kernel , utz , Andrew Morton , alexn@dsv.su.se Subject: Re: [PATCH]sched: Isochronous class v2 for unprivileged soft rt scheduling References: <41EEE1B1.9080909@kolivas.org> In-Reply-To: <41EEE1B1.9080909@kolivas.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2462 Lines: 70 Con Kolivas wrote: > This is version 2 of the SCHED_ISO patch with the yield bug fixed and > code cleanups. ...answering on this thread to consolidate the two branches of the email thread. Here are my results with SCHED_ISO v2 on a pentium-M 1.7Ghz (all powersaving features off): SCHED_NORMAL: awk: ./jack_test3_summary.awk:67: (FILENAME=- FNR=862) fatal: division by zero attempted Well we wont bother looking at those results then. there were 38 XRUNS that did make it on the parsed output. SCHED_FIFO: ********************************************* Timeout Count . . . . . . . . :( 0) XRUN Count . . . . . . . . . : 4 Delay Count (>spare time) . . : 18 Delay Count (>1000 usecs) . . : 0 Delay Maximum . . . . . . . . : 6595 usecs Cycle Maximum . . . . . . . . : 368 usecs Average DSP Load. . . . . . . : 17.9 % Average CPU System Load . . . : 3.4 % Average CPU User Load . . . . : 13.7 % Average CPU Nice Load . . . . : 0.0 % Average CPU I/O Wait Load . . : 1.4 % Average CPU IRQ Load . . . . : 0.6 % Average CPU Soft-IRQ Load . . : 0.0 % Average Interrupt Rate . . . : 1697.0 /sec Average Context-Switch Rate . : 13334.1 /sec ********************************************* SCHED_ISO (iso_cpu 70): ********************************************* Timeout Count . . . . . . . . :( 0) XRUN Count . . . . . . . . . : 5 Delay Count (>spare time) . . : 18 Delay Count (>1000 usecs) . . : 0 Delay Maximum . . . . . . . . : 6489 usecs Cycle Maximum . . . . . . . . : 405 usecs Average DSP Load. . . . . . . : 18.0 % Average CPU System Load . . . : 3.3 % Average CPU User Load . . . . : 13.7 % Average CPU Nice Load . . . . : 0.0 % Average CPU I/O Wait Load . . : 0.0 % Average CPU IRQ Load . . . . : 0.6 % Average CPU Soft-IRQ Load . . : 0.0 % Average Interrupt Rate . . . : 1700.2 /sec Average Context-Switch Rate . : 12457.2 /sec ********************************************* Increasing iso_cpu did not change the results. At least in my testing on my hardware, v2 is working as advertised. I need results from more hardware configurations to know if priority support is worth adding or not. Cheers, Con - 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/