From owner-freebsd-current@FreeBSD.ORG Sun May 11 15:37:30 2003 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 1C08A37B401 for ; Sun, 11 May 2003 15:37:30 -0700 (PDT) Received: from mx0.freebsd-services.com (survey.codeburst.net [195.149.39.161]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4B26743FDD for ; Sun, 11 May 2003 15:37:29 -0700 (PDT) (envelope-from paul@freebsd-services.com) Received: from [192.168.7.2] (freebsd.gotadsl.co.uk [81.6.249.198]) by mx0.freebsd-services.com (Postfix) with ESMTP id E6B531B211; Sun, 11 May 2003 23:37:27 +0100 (BST) From: Paul Richards To: "M. Warner Losh" In-Reply-To: <20030511.143231.133432780.imp@bsdimp.com> References: <22333.1052574519@critter.freebsd.dk> <20030511.134504.85393710.imp@bsdimp.com> <1052684139.4921.3.camel@cf.freebsd-services.com> <20030511.143231.133432780.imp@bsdimp.com> Content-Type: text/plain Organization: Message-Id: <1052692357.4921.128.camel@cf.freebsd-services.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.4 Date: 11 May 2003 23:32:38 +0100 Content-Transfer-Encoding: 7bit cc: current@freebsd.org Subject: Re: Interrupt latency problems 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: Sun, 11 May 2003 22:37:30 -0000 On Sun, 2003-05-11 at 21:32, M. Warner Losh wrote: > In message: <1052684139.4921.3.camel@cf.freebsd-services.com> > Paul Richards writes: > : On Sun, 2003-05-11 at 20:45, M. Warner Losh wrote: > : > In message: <22333.1052574519@critter.freebsd.dk> > : > "Poul-Henning Kamp" writes: > : > : In message <1052570246.27195.6.camel@cf.freebsd-services.com>, Paul Richards wr > : > : ites: > : > : >I'm having real problems with current with heavy disk activity. > : > : > > : > : >When working in X and updating ports which causes a lot of disk activity > : > : >I get *very* poor interactive responses. Keypresses can not appear for > : > : >seconds and mouse movement is very jerky and unresponsive. > : > : > > : > : >I'm wondering if something is holding locks a long time in interrupt > : > : >handlers and causing mouse/keyboard interrupts to be lost? > : > : > : > : We have this lock called "Giant" which we're trying to get rid off... > : > > : > Actually, this may be a problem in the acpi code. I have at least one > : > battery that causes my system to 'freeze' for a while. The mouse > : > interrupts aren't lost, per se, but just deferred too long. That was > : > before the latest acpi upgrade, and I've not tried the offending > : > battery since then (I think that the zero length messages are related > : > to querrying the battery status, but haven't booted windows to find > : > out for sure). > : > : Hmm, that an intersting line of thought. The symptoms sound similar, > : that interrupts aren't necessarily been missed, since I can type when > : things seem locked up then it all appears. > : > : I get boatloads of these, they stream past continuously. > : > : ACPI-0448: *** Error: AcpiEvGpeDispatch: No handler or method for > : GPE[0], disabling event > : > : I have no idea what they mean though :-) > : > : I wonder if that might have something to do with it, or if it's > : triggering a problem somewhere in the dmesg buffer that's causing locks > : to be held too long. > > Is this a laptop? I've only seen problems on the laptop. I've seen > shorter hangs from heavy ata disk activity, but my only ata systems > are laptops and they don't have the high performance necssary to > trigger things. No, it's a Supermicro DLE, with 2 P3-800 processors. -- Paul Richards