From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 27 Jan 2001 21:56:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 27 Jan 2001 21:56:25 -0500 Received: from femail1.rdc1.on.home.com ([24.2.9.88]:52108 "EHLO femail1.rdc1.on.home.com") by vger.kernel.org with ESMTP id ; Sat, 27 Jan 2001 21:56:15 -0500 Message-ID: <3A738A36.F6294623@Home.net> Date: Sat, 27 Jan 2001 21:55:51 -0500 From: Shawn Starr Organization: Visualnet X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.4.1-pre10 i586) X-Accept-Language: en MIME-Version: 1.0 To: Shawn Starr CC: Andrew Morton , Chris Mason , Gregory Maxwell , linux-kernel@vger.kernel.org Subject: Re: Kernel 2.4.x and 2.4.1-preX - Higher latency then 2.2.xkernels? In-Reply-To: <186870000.980100593@tiny> <3A6B6FDE.93AF69CC@Home.net> <3A72820A.1488BDC@uow.edu.au> <3A7280F5.F122FE35@Home.com> Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andrew, the patch HAS made a difference. For example, while untaring glibc-2.2.1.tar.gz the system was not sluggish (mouse movements in X) etc. Seems to be a go for latency improvements on this system. Shawn Starr wrote: > Applying now. > > Andrew Morton wrote: > > > Shawn, > > > > I've pretty much completed the low-latency patch against reiserfs. > > It seems to be a little more latency-prone than ext2, but under normal > > workloads it's not significant. The worst-case is 100 milliseconds, > > but that's when you're doing insane things to it. > > > > You may care to apply http://www.uow.edu.au/~andrewm/linux/2.4.1-pre10-low-latency.patch > > against 2.4.1-pre10 and see if it "feels" different. I'd be surprised > > if it does, but the result would be interresting. > > > > Note that the low-latency capability must be enabled under the > > "Processor type and features" menu, and if you also enable the > > low-latency sysctl option, you'll need to > > > > echo 1 > /proc/sys/kernel/lowlatency > > > > to make it happen. Creature feep :) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/