From owner-freebsd-current@FreeBSD.ORG Wed Aug 4 21:33:23 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 4F1DC16A4CE for ; Wed, 4 Aug 2004 21:33:23 +0000 (GMT) Received: from speicher.org (speicher.org [208.199.76.238]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9E57D43D54 for ; Wed, 4 Aug 2004 21:33:22 +0000 (GMT) (envelope-from geoff@speicher.org) Received: from speicher.org (localhost [127.0.0.1]) by speicher.org (8.12.11/8.12.11) with ESMTP id i74LXJm8099381; Wed, 4 Aug 2004 17:33:19 -0400 (EDT) (envelope-from geoff@speicher.org) Received: (from geoff@localhost) by speicher.org (8.12.11/8.12.11/Submit) id i74LXJqD099380; Wed, 4 Aug 2004 17:33:19 -0400 (EDT) (envelope-from geoff) Date: Wed, 4 Aug 2004 17:33:19 -0400 From: Geoff Speicher To: Jon Noack Message-ID: <20040804213319.GB98953@sirius.speicher.org> References: <1091649533.29481.42.camel@lanshark.dmv.com> <20040804203456.GA46377@parodius.com> <411152D8.2050305@alumni.rice.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <411152D8.2050305@alumni.rice.edu> User-Agent: Mutt/1.4.2.1i cc: current@freebsd.org cc: Jeremy Chadwick Subject: Re: Postgresql locks up server - no response at all 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: Wed, 04 Aug 2004 21:33:23 -0000 On Wed, Aug 04, 2004 at 04:19:20PM -0500, Jon Noack wrote: > On 08/04/04 15:34, Jeremy Chadwick wrote: > > > >Many people over in freebsd-threads mentioned this problem, and recommended > >all sorts-of different workarounds. I tried every one available to me, > >except mucking with PREEMPTION (as I did not feel comfortable tinkering > >with a random .h file on the box; seemed to be a kernel-related thing, > >so I'd rather have just an "options" line for it -- I'm conditionally > >lazy). > > The one you didn't try most likely was the culprit. Robert Watson > showed that PREEMPTION and threading don't play well together right now: FWIW, in mid-late July, my problems were not PREEMPTION-related. I tried everything I could to get usable threaded apps under XFree86, but my Athlon XP rebooted every time I tried to run kdm, Firefox, etc. This included all four combinations of PREEMPTION and ULE/4BSD. Rolling back to July 1 was the only thing that worked for me. Geoff