Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932365AbXLTMvA (ORCPT ); Thu, 20 Dec 2007 07:51:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759383AbXLTMuv (ORCPT ); Thu, 20 Dec 2007 07:50:51 -0500 Received: from hs-out-0708.google.com ([64.233.178.245]:40770 "EHLO hs-out-2122.google.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754102AbXLTMuu (ORCPT ); Thu, 20 Dec 2007 07:50:50 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=OIZOSFBktV06x8BhsE+vEldUydRVfBe5upLGysIxbA0upYk6QorxGQztbZfgYK8XM+4MMcid8H/j+0M1Brw1k6QKFftViLvP8+OtCRxQZ7k2JhXXIAQwcqzig5zpXh2NWdj3NCIhk/HfQpN+80UyhHdTxMNAQz5fCs0FVxLzgdc= Message-ID: <3efb10970712200450p6b100e63gd4a3b547cec5c986@mail.gmail.com> Date: Thu, 20 Dec 2007 13:50:49 +0100 From: "Remy Bohmer" To: "Jaswinder Singh" Subject: Re: [patch 3/3] Enable setting of IRQ-thread priorities from kernel cmdline. (repost:CC to LKML) Cc: "Steven Rostedt" , "Arnaldo Carvalho de Melo" , "Ingo Molnar" , "Juergen Beisert" , "Darren Hart" , linux-rt-users@vger.kernel.org, "Sven-Thorsten Dietrich" , LKML In-Reply-To: <1985e0f60712200445o4f854cdep6eebf1726737229b@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20071219194551.315868746@bohmer.net> <47697888.143f420a.5466.ffff89ba@mx.google.com> <1985e0f60712200359k6194b0fdn25ead9b5c0835c95@mail.gmail.com> <3efb10970712200425x4b0ffadcpd2ffa3223eda7b3d@mail.gmail.com> <1985e0f60712200445o4f854cdep6eebf1726737229b@mail.gmail.com> X-Google-Sender-Auth: ad5370e41dbfeb04 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1304 Lines: 41 > By default, all softirq-threads or IRQs will be RT task but if there > is some option user can switch it to NON-RT task then it will be good. Okay, understood. I will think about how to add that too. But, probably we can add it seperately from this patchset. Kind Regards, Remy 2007/12/20, Jaswinder Singh : > Hello Remy, > > On 12/20/07, Remy Bohmer wrote: > > So, Is this a serious requirement? Should this be possible? > > I have noticed this problem: > root@192.168.1.253:~# cat /proc/loadavgrt > 1.00 1.00 1.00 0/52 1158 > root@192.168.1.253:~# cat /proc/loadavg > 0.00 0.00 0.02 1/52 1159 > root@192.168.1.253:~# > > So I am curious, if possible, user can switch softirq-threads or IRQs > RT tasks to non-RT tasks for slow hardware or least important hardware > for NON-RT tasks. So this will improve RT behaviour. > > By default, all softirq-threads or IRQs will be RT task but if there > is some option user can switch it to NON-RT task then it will be good. > > Thank you, > > Jaswinder Singh. > -- 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/