Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030400AbWAGKYI (ORCPT ); Sat, 7 Jan 2006 05:24:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030401AbWAGKYI (ORCPT ); Sat, 7 Jan 2006 05:24:08 -0500 Received: from mail.gmx.de ([213.165.64.21]:49543 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S1030400AbWAGKYG (ORCPT ); Sat, 7 Jan 2006 05:24:06 -0500 X-Authenticated: #14349625 Message-Id: <5.2.1.1.2.20060107112152.00c26298@pop.gmx.net> X-Mailer: QUALCOMM Windows Eudora Version 5.2.1 Date: Sat, 07 Jan 2006 11:23:50 +0100 To: Con Kolivas From: Mike Galbraith Subject: Re: [PATCH] sched: Fix adverse effects of NFS client on interactive response Cc: Peter Williams , Helge Hafting , Trond Myklebust , Ingo Molnar , Linux Kernel Mailing List In-Reply-To: <200601072030.59445.kernel@kolivas.org> References: <5.2.1.1.2.20060107051229.00c42230@pop.gmx.net> <5.2.1.1.2.20060106074738.00bbaeb8@pop.gmx.net> <5.2.1.1.2.20060107051229.00c42230@pop.gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Antivirus: avast! (VPS 0601-0, 01/02/2006), Outbound message X-Antivirus-Status: Clean X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1075 Lines: 24 At 08:30 PM 1/7/2006 +1100, Con Kolivas wrote: >On Saturday 07 January 2006 16:27, Mike Galbraith wrote: > > > Personally, I think that all TASK_UNINTERRUPTIBLE sleeps should be > > > treated as non interactive rather than just be heavily discounted (and > > > that TASK_NONINTERACTIVE shouldn't be needed in conjunction with it) BUT > > > I may be wrong especially w.r.t. media streamers such as audio and video > > > players and the mechanisms they use to do sleeps between cpu bursts. > > > > Try it, you won't like it. When I first examined sleep_avg woes, my > > reaction was to nuke uninterruptible sleep too... boy did that ever _suck_ > > :) > >Glad you've seen why I put the uninterruptible sleep logic in there. Yeah, if there's one thing worse than too much preemption, it's too little preemption. -Mike - 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/