From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261514AbULFMZi (ORCPT ); Mon, 6 Dec 2004 07:25:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261512AbULFMZh (ORCPT ); Mon, 6 Dec 2004 07:25:37 -0500 Received: from ns.virtualhost.dk ([195.184.98.160]:12469 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S261508AbULFMZT (ORCPT ); Mon, 6 Dec 2004 07:25:19 -0500 Date: Mon, 6 Dec 2004 13:24:44 +0100 From: Jens Axboe To: Helge Hafting Cc: Robert Love , Kyle Moffett , Con Kolivas , Jeff Sipek , Linux Kernel Subject: Re: [PATCH] Time sliced CFQ #2 Message-ID: <20041206122444.GW10498@suse.de> References: <20041204163948.GA20486@optonline.net> <20041205185844.GF6430@suse.de> <20041206002954.GA28205@optonline.net> <41B3BD0F.6010008@kolivas.org> <20041206022338.GA5472@optonline.net> <41B3C54B.1080803@kolivas.org> <1102310049.6052.123.camel@localhost> <20041206071923.GC10498@suse.de> <41B44E03.8090007@hist.no> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <41B44E03.8090007@hist.no> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 06 2004, Helge Hafting wrote: > Jens Axboe wrote: > > >On Mon, Dec 06 2004, Robert Love wrote: > > > > > >> > >> (1) separate the two values. we have a scheduling > >> priority (distributing the finite resource of > >> processor time) and an I/O priority (distributing > >> the finite resource of disk bandwidth). > >> (2) just have a single value. > >> > >> > > > >They are inherently seperate entities, I don't think mixing them up is a > >good idea. IO priorities also includes things like attempting to > >guarentee disk bandwidth, it isn't always just a 'nice' value. > > > > > Two separate entities is fine. Those who want just one > entity can use a "nice wrapper" that sets both > simultaneously. Did you happen to catch any info out of the crash? -- Jens Axboe