Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266894AbUIOC7o (ORCPT ); Tue, 14 Sep 2004 22:59:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266903AbUIOC7o (ORCPT ); Tue, 14 Sep 2004 22:59:44 -0400 Received: from mustang.oldcity.dca.net ([216.158.38.3]:62391 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S266894AbUIOC7m (ORCPT ); Tue, 14 Sep 2004 22:59:42 -0400 Subject: Re: [patch] sched: fix scheduling latencies for !PREEMPT kernels From: Lee Revell To: William Lee Irwin III Cc: Alan Cox , Robert Love , Andrea Arcangeli , Nick Piggin , Ingo Molnar , Andrew Morton , Linux Kernel Mailing List In-Reply-To: <20040915023611.GH9106@holomorphy.com> References: <41470021.1030205@yahoo.com.au> <20040914150316.GN4180@dualathlon.random> <1095185103.23385.1.camel@betsy.boston.ximian.com> <20040914185212.GY9106@holomorphy.com> <1095188569.23385.11.camel@betsy.boston.ximian.com> <20040914192104.GB9106@holomorphy.com> <1095189593.16988.72.camel@localhost.localdomain> <1095207749.2406.36.camel@krustophenia.net> <20040915014610.GG9106@holomorphy.com> <1095213644.2406.90.camel@krustophenia.net> <20040915023611.GH9106@holomorphy.com> Content-Type: text/plain Message-Id: <1095217186.2406.121.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Tue, 14 Sep 2004 22:59:46 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1061 Lines: 29 On Tue, 2004-09-14 at 22:36, William Lee Irwin III wrote: > I have neither of these locally. I suspect someone needs to care enough > about the code for anything to happen soon. I suppose there are things > that probably weren't tried, e.g. auditing to make sure dependencies on > external synchronization are taken care of, removing implicit sleeping > with the BKL held, then punt a private recursive spinlock in reiser3's > direction. Not sure what went on, or if I want to get involved in this > particular case. > There isn't really any information in the archives about what was tried. Here's Andrew's message: http://lkml.org/lkml/2004/7/12/266 And Hans': http://lkml.org/lkml/2004/8/10/320 I suspect that "Use reiser4 (or ext3) if you care about latency" is a good enough answer for most people. Lee - 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/