Date: Thu, 26 Oct 2000 11:55:48 -0500 From: Patrick Hartling <patrick@137.org> To: John Baldwin <jhb@FreeBSD.org>, FreeBSD-current@FreeBSD.org Subject: Re: smp instability Message-ID: <20001026165548.4602E5E02@tomservo.vrac.iastate.edu> In-Reply-To: "Wed, 25 Oct 2000 10:10:28 CDT." <20001025151028.B7E335E02@tomservo.vrac.iastate.edu>
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Patrick Hartling <patrick@137.org> wrote: } John Baldwin <jhb@FreeBSD.org> wrote: } } } } } On 25-Oct-00 Chuck Robey wrote: } } > I'm having rather extreme problems with stability on my dual PIII } } > setup. I know this is to be expected, but it's gotten so extreme on my } } > system, I can't spend more than a few minutes before it locks up. } } > } } > Is there any chance that I could make things better by using a sysctl to } } > tell the box it's now a single-cpu system? I can't read man pages at the } } > moment (I'm composing this on my Sparc Ultra-5) so if this might work, an *** d } } > someone knows the exact command to use, I'd appreciate a bit of help. } } } } You can use kernel.old to compile a UP kernel. I always keep a UP kernel } } around just in case. Also, when did your SMP box become unstable? There } } was a known problem with SMP boxes when the vm page zero'ing during the idl *** e } } loop was first turned on that has since been fixed with the latest commit t *** o } } vm_machdep.c yesterday. Symptoms were frequent kernel panic 12's with } } interrupts disabled . } } I am having the same lockup problems as Chuck with SMP kernels built since } October 21. The system completely locks up after a short period of time. } If I'm running X, it does it within 10-15 minutes, but if I don't run X } and just leave it at the console, it can go for a few hours. It does } eventually lock up, though. I haven't tried building a UP kernel, but I } will try the latest vm_machdep.c changes. If that doesn't work, I'll go } the UP route since I'm tired of being unable to list my processes. :\ To follow up on this, I rebuilt everything using sources from approximately 11:00 am CDT yesterday (10/26), and everything is great again. Hooray! -Patrick Patrick L. Hartling | Research Assistant, VRAC patrick@137.org | 2624 Howe Hall -- (515)294-4916 http://www.137.org/patrick/ | http://www.vrac.iastate.edu/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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