From owner-freebsd-current@FreeBSD.ORG Wed Nov 5 07:50:02 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 9B52516A4CE for ; Wed, 5 Nov 2003 07:50:02 -0800 (PST) Received: from fledge.watson.org (fledge.watson.org [204.156.12.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4547943F93 for ; Wed, 5 Nov 2003 07:50:01 -0800 (PST) (envelope-from robert@fledge.watson.org) Received: from fledge.watson.org (localhost [127.0.0.1]) by fledge.watson.org (8.12.9p2/8.12.9) with ESMTP id hA5FmLMg084618; Wed, 5 Nov 2003 10:48:21 -0500 (EST) (envelope-from robert@fledge.watson.org) Received: from localhost (robert@localhost)hA5FmJlf084615; Wed, 5 Nov 2003 10:48:20 -0500 (EST) (envelope-from robert@fledge.watson.org) Date: Wed, 5 Nov 2003 10:48:19 -0500 (EST) From: Robert Watson X-Sender: robert@fledge.watson.org To: Sheldon Hearn In-Reply-To: <20031105091007.GJ73736@starjuice.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: Jeff Roberson cc: Eirik Oeverby cc: current@freebsd.org Subject: Re: More ULE bugs fixed. 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, 05 Nov 2003 15:50:02 -0000 On Wed, 5 Nov 2003, Sheldon Hearn wrote: > On (2003/11/04 15:46), Jeff Roberson wrote: > > > > The thing is, I'm using 4BSD, not ULE, so I wouldn't trouble Jeff to > > > look for a cause for that specific problem in ULE. > > > > How long have you been seeing this? Are you using a usb mouse? Can you > > try with PS/2 if you are? > > Since my last update, Fri Oct 24 17:47:22. > > I am using a USB mouse, but don't have a PS/2 one. I'm also using > moused, and my WM is sawfish. > > The problem with all these reports is that they're scattered. It's hard > to pin down exactly what the common elements are. Indeed, we may be > looking at combinations of elements. > > I don't have time to be more helpful, which is why I hadn't complained. > I just wanted to include the datapoint that over-active mouse behaviour > under load exists under SCHED_4BSD as well. > > Incidentally, this is under ATA disk load. I don't really push my CPU. There's been some speculation that the PS/2 mouse problem could be due to high interrupt latency for non-fast interrupt handlers (especially ones not MPSAFE) in 5.x. I think it would make a lot of sense for us to push Giant off both the PS/2 mouse and syscons interrupt handlers in the near future. For syscons, this would also improve the reliability of dropping into the debugger from a non-serial console. Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Network Associates Laboratories