From owner-freebsd-stable@FreeBSD.ORG Wed Oct 8 18:36:54 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 4E4AA10656A9 for ; Wed, 8 Oct 2008 18:36:54 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from QMTA04.emeryville.ca.mail.comcast.net (qmta04.emeryville.ca.mail.comcast.net [76.96.30.40]) by mx1.freebsd.org (Postfix) with ESMTP id 226CA8FC13 for ; Wed, 8 Oct 2008 18:36:53 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from OMTA14.emeryville.ca.mail.comcast.net ([76.96.30.60]) by QMTA04.emeryville.ca.mail.comcast.net with comcast id QFJr1a02z1HpZEsA4JctDC; Wed, 08 Oct 2008 18:36:53 +0000 Received: from koitsu.dyndns.org ([69.181.141.110]) by OMTA14.emeryville.ca.mail.comcast.net with comcast id QJcs1a00G2P6wsM8aJcsYF; Wed, 08 Oct 2008 18:36:53 +0000 X-Authority-Analysis: v=1.0 c=1 a=2tN0PPoFp_AA:10 a=QycZ5dHgAAAA:8 a=AeySgW_HAfhoxRhyOqoA:9 a=S8HN_5x7pavsglYiqesA:7 a=C-zOD2TBqtn_w5wV0lAXgHm8A8EA:4 a=EoioJ0NPDVgA:10 a=LY0hPdMaydYA:10 Received: by icarus.home.lan (Postfix, from userid 1000) id 44392C9419; Wed, 8 Oct 2008 11:36:52 -0700 (PDT) Date: Wed, 8 Oct 2008 11:36:52 -0700 From: Jeremy Chadwick To: bf Message-ID: <20081008183652.GA83351@icarus.home.lan> References: <104852.27020.qm@web39102.mail.mud.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <104852.27020.qm@web39102.mail.mud.yahoo.com> User-Agent: Mutt/1.5.18 (2008-05-17) Cc: freebsd-stable@freebsd.org Subject: Re: Recent Problems with RELENG_7 i386 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: Wed, 08 Oct 2008 18:36:54 -0000 On Wed, Oct 08, 2008 at 10:19:47AM -0700, bf wrote: > After updating to RELENG_7 i386 of this weekend, I have been having problems > with my machine. When booting normally, the system slows or hangs at the > login prompt. If I am able to continue past the prompt, I sometimes experience > erratic mouse behavior, and a subsequent hang, after varying lengths of time, > even under light workloads. The same problem does not seem to occur in > single-user mode, and did not occur with the RELENG_7 i386 of just over a > week ago. I have been unable to obtain crashdumps so far, and the only > log messages I can find that weren't present before are notices like those > recorded below: > > Oct 8 11:00:40 myhost kernel: t_delta 15.fd80bdcb75b60200 too short This comes from src/sys/kern/kern_tc.c, around line 908. I'm not familiar with the kernel, but two ideas come to mind: 1) If you have Intel SpeedStep (EIST) or AMD Cool'n'Quiet enabled in your BIOS, try disabling it, 2) If you're using powerd, disable it (I don't see it enabled), 3) Try keeping HZ at 1000 (the default). -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |