From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756242AbYCCIke (ORCPT ); Mon, 3 Mar 2008 03:40:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752663AbYCCIk1 (ORCPT ); Mon, 3 Mar 2008 03:40:27 -0500 Received: from el-out-1112.google.com ([209.85.162.178]:13517 "EHLO el-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752055AbYCCIk0 (ORCPT ); Mon, 3 Mar 2008 03:40:26 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=hghOObLBagIZT/zDkO4MRl0geyI7QU0rmwX03iyH1dl8Y8e/GuuMUky8iCBQ00iuQ9hJENYNXlVgJg8uD8u7P4L5VcQsMjnZH9Raqgcs7qvaHYNNFyTiVgM3Vo/angdoedY6cxcbt1+qREQifmL5osQ/2RNSNF1OTLljo8HVZrU= Message-ID: Date: Mon, 3 Mar 2008 09:40:24 +0100 From: "Michael Kerrisk" To: "Ingo Molnar" Subject: Re: SCHED_IDLE documentation Cc: "Arnd Bergmann" , "Christoph Hellwig" , cbe-oss-dev@ozlabs.org, "Jeremy Kerr" , linux-kernel@vger.kernel.org In-Reply-To: <20080303073311.GB5934@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <1203376368.275756.252634247263.1.gpush@pokey> <200803030612.28039.arnd@arndb.de> <20080303051719.GA26102@lst.de> <200803030721.52869.arnd@arndb.de> <20080303073311.GB5934@elte.hu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 3, 2008 at 8:33 AM, Ingo Molnar wrote: > > * Arnd Bergmann wrote: > > > If we don't have any man page, what is the actual definition of > > SCHED_IDLE anyway? > > it's rather simple: "it's a priority level even lower priority than nice > +19". Some other questions whose answers may be worth including in the man page: * When was SCHED_IDLE added? (Actually, who added it?) * Why was it added? (What are the particular benefits of the new sceuling class as opposed to using a very low nice value for SCHED_OTHER?) * What's the difference between SCHED_IDLE and SCHED_BATCH? Cheers, Michael -- Michael Kerrisk Maintainer of the Linux man-pages project http://www.kernel.org/doc/man-pages/ Want to report a man-pages bug? Look here: http://www.kernel.org/doc/man-pages/reporting_bugs.html