Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753342AbZA3HVj (ORCPT ); Fri, 30 Jan 2009 02:21:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751947AbZA3HVc (ORCPT ); Fri, 30 Jan 2009 02:21:32 -0500 Received: from sovereign.computergmbh.de ([85.214.69.204]:36900 "EHLO sovereign.computergmbh.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751905AbZA3HVb (ORCPT ); Fri, 30 Jan 2009 02:21:31 -0500 Date: Fri, 30 Jan 2009 08:21:30 +0100 (CET) From: Jan Engelhardt To: Nathanael Hoyle cc: Linux Kernel Mailing List Subject: Re: scheduler nice 19 versus 'idle' behavior / static low-priority scheduling In-Reply-To: <1233297635.17301.11.camel@localhost> Message-ID: References: <1233294584.28741.2.camel@localhost> <1233297635.17301.11.camel@localhost> User-Agent: Alpine 2.00 (LSU 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1403 Lines: 34 On Friday 2009-01-30 07:40, Nathanael Hoyle wrote: >On Fri, 2009-01-30 at 07:16 +0100, Jan Engelhardt wrote: > >The one discussion I saw referencing SCHED_BATCH seemed to imply that it >was a non-standard kernel patch by Con Kolivas in one of his -ck >variants that never made it into mainline and is not being maintained. >Is this inaccurate? The presence of SCHED_BATCH in linux/sched.h tells me it is available (on the other hand, SCHED_ISO, also from -ck, is only listed as a comment.) >I was unfamiliar with SCHED_IDLE. Having done a little Googling now, I >finally find reference to the man page for sched_setscheduler(2). This >appears that it is likely what I wanted. > >I think the information I had been able to find was somehwat out of >date. The manpage does say it, but if your local distro does not mention SCHED_BATCH/SCHED_IDLE, then that's a pretty sad distro. The doc in sched_setschedule seems complete to me as of man-pages 3.13. >Is there currently a standardized userspace tool to use to run a command >in order to alter its scheduling class? Obviously writing one would be >trivial, but didn't know if something like: man chrt -- 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/