Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262223AbVBKJkm (ORCPT ); Fri, 11 Feb 2005 04:40:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262227AbVBKJkm (ORCPT ); Fri, 11 Feb 2005 04:40:42 -0500 Received: from waste.org ([216.27.176.166]:45031 "EHLO waste.org") by vger.kernel.org with ESMTP id S262223AbVBKJkg (ORCPT ); Fri, 11 Feb 2005 04:40:36 -0500 Date: Fri, 11 Feb 2005 01:40:21 -0800 From: Matt Mackall To: Ingo Molnar Cc: Chris Wright , "Jack O'Quin" , Andrew Morton , Christoph Hellwig , linux-kernel@vger.kernel.org, Paul Davis , Con Kolivas , rlrevell@joe-job.com Subject: Re: 2.6.11-rc3-mm2 Message-ID: <20050211094021.GJ15058@waste.org> References: <20050211000425.GC2474@waste.org> <20050210164727.M24171@build.pdx.osdl.net> <20050211020956.GC15058@waste.org> <20050211081422.GB2287@elte.hu> <20050211084107.GG15058@waste.org> <20050211085942.GB3980@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050211085942.GB3980@elte.hu> User-Agent: Mutt/1.5.6+20040907i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1158 Lines: 26 On Fri, Feb 11, 2005 at 09:59:42AM +0100, Ingo Molnar wrote: > > think of SCHED_FIFO on the desktop as an ugly wart, a hammer, that > destroys the careful balance of priorities of SCHED_OTHER tasks. Yes, it > can be useful if you _need_ a scheduling guarantee due to physical > constraints, and it can be useful if the hardware (or the kernel) cannot > buffer enough, but otherwise, it only causes problems. Agreed. I think something short of full SCHED_FIFO will make most desktop folks happy. But a) we still have to figure out exactly how to do that and b) we still have to make everyone else happy. The embedded folks (me included) would prefer to not run our realtime bits as root too.. > but i'm not sure how rlimits will contain the whole problem - can > rlimits be restricted to a single app (jackd)? Yes. There's also the whole soft limit thing. -- Mathematics is the supreme nostalgia of our time. - 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/