From owner-freebsd-stable@FreeBSD.ORG Fri Jan 4 20:57:19 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E38CC16A41A for ; Fri, 4 Jan 2008 20:57:19 +0000 (UTC) (envelope-from kris@FreeBSD.org) Received: from weak.local (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 26F1013C442; Fri, 4 Jan 2008 20:57:16 +0000 (UTC) (envelope-from kris@FreeBSD.org) Message-ID: <477E9DA9.7000404@FreeBSD.org> Date: Fri, 04 Jan 2008 21:57:13 +0100 From: Kris Kennaway User-Agent: Thunderbird 2.0.0.9 (Macintosh/20071031) MIME-Version: 1.0 To: josh.carroll@gmail.com References: <200710171228.39123.mistry.7@osu.edu> <200711070953.22154.mistry.7@osu.edu> <200711191254.08134.mistry.7@osu.edu> <4777942D.9010209@FreeBSD.org> <20071230205519.GL73834@redundancy.redundancy.org> <477817E1.7010409@FreeBSD.org> <20071230233017.GM73834@redundancy.redundancy.org> <477AAD89.2000808@FreeBSD.org> <477E96D2.30202@FreeBSD.org> <8cb6106e0801041246m44641e45n997406e89962a06f@mail.gmail.com> In-Reply-To: <8cb6106e0801041246m44641e45n997406e89962a06f@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: "David E. Thiel" , freebsd-stable@freebsd.org Subject: Re: RELENG_7 jerky mouse and skipping sound (still a problem -BETA3) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Jan 2008 20:57:20 -0000 Josh Carroll wrote: >>> OK, can you obtain a schedgraph trace when the problem is manifesting? >>> See /usr/src/tools/sched/ and previous discussion in this or related >>> threads. >> Anyone? Time is rapidly running out to get this fixed in time for >> 7.0-RELEASE, so we need this trace ASAP. > > Kris, > > I would be happy to try to reproduce this and provide the necessary > trace/debug info, however I admit at this point I'm not sure which set > of kernel configuration and/or setup is causing the issue. > > As I said in a previous message, I solved the jerkiness by using > moused and pointing xorg.conf to /dev/sysmouse. Shall I try with > /dev/psm0 instead and provide the schedgraph info? Or is enabling > PREEMPTION (which I have done in my custom kernel) already "fixing" > this for me, and therefore should I use a GENERIC kernel, just > substituting SCHED_4BSD with SCHED_ULE? The problems I am currently interested in are people who have not found an acceptable workaround for their performance problems :) There are outstanding reports of people for whom (as I understand it) neither scheduler performs well on UP 7.0 systems when running X, compared to the same version of X on 6.x. i.e. there seems to be some kind of regression that we need to understand and then fix. Kris