From owner-freebsd-current@FreeBSD.ORG Fri Jul 9 18:11:54 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EAA0B16A4CE; Fri, 9 Jul 2004 18:11:54 +0000 (GMT) Received: from otter3.centtech.com (moat3.centtech.com [207.200.51.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 463F043D49; Fri, 9 Jul 2004 18:11:54 +0000 (GMT) (envelope-from anderson@centtech.com) Received: from [10.177.171.220] (neutrino.centtech.com [10.177.171.220]) by otter3.centtech.com (8.12.3/8.12.3) with ESMTP id i69IBrE8098803; Fri, 9 Jul 2004 13:11:53 -0500 (CDT) (envelope-from anderson@centtech.com) Message-ID: <40EEDFE2.10908@centtech.com> Date: Fri, 09 Jul 2004 13:11:46 -0500 From: Eric Anderson User-Agent: Mozilla Thunderbird 0.7.1 (X11/20040707) X-Accept-Language: en-us, en MIME-Version: 1.0 To: John Baldwin References: <20040705184940.GA2651@tybalt.greiner.local> <200407091315.16899.jhb@FreeBSD.org> <40EED38D.9010903@alumni.rice.edu> <200407091346.39021.jhb@FreeBSD.org> In-Reply-To: <200407091346.39021.jhb@FreeBSD.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: Taku YAMAMOTO cc: freebsd-current@freebsd.org Subject: Re: Native preemption is the culprit [was Re: today's CURRENT lockups] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Jul 2004 18:11:55 -0000 John Baldwin wrote: >On Friday 09 July 2004 01:19 pm, Jon Noack wrote: > > >>On 07/09/04 12:15, John Baldwin wrote: >> >> >>>My test machine is not a true SMP machine either, just HTT. It has been >>>running a -j 256 worldloop overnight with no problems, so I committed a >>>slightly modified version of the patch yesterday. >>> >>> >>Did you test with a UP kernel? After your latest commit I have been >>experiencing regular hard locks on my pre-HTT P4 machine. Backing out >>rev. 1.114 of sched_ule.c fixes it. See my previous message (Re: >>FreeBSD keeps hanging......): >>http://docs.freebsd.org/cgi/mid.cgi?40EECC49.3070501 >> >> > >No, it's running an SMP kernel. I have seen one hard lockup on a UP kernel on >my laptop when trying to use xmms in KDE while using ULE. > > > Just for a point of reference, I updated yesterday (first time in about 45 days), and now I'm seeing lockups too.. I'm running a UP kernel, with 4BSD scheduler.. Eric -- ------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Talk sense to a fool and he calls you foolish. ------------------------------------------------------------------