Date: Sat, 24 Jul 2004 20:33:57 -0500 (CDT) From: "Conrad J. Sabatier" <conrads@cox.net> To: Scott Long <scottl@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: [amd64] Instability worse than ever Message-ID: <XFMail.20040724203357.conrads@cox.net> In-Reply-To: <4102FCF2.60708@freebsd.org>
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On 25-Jul-2004 Scott Long wrote: > Conrad J. Sabatier wrote: > >> For the last couple of days, my amd64 box has taken to spontaneously >> rebooting. No panic, no coredump, nothing in logs, just reboots. >> >> These always seem to occur just as I'm clicking on something under >> GNOME. >> >> Very mysterious! >> > > Do you have INVARIANTS turned on? No, I really should do that. Don't know why I hadn't already. Duh. :-) > If you do, would you be able to > hook up a serial console and see what the kernel is saying? Been meaning to ask about that. Would a null modem connection from my other machine be useable as the serial console? I have all the kernel config options and the sio flags set to enable the serial console, but wasn't sure if that would work or not. If so, I could try that. > Also, > a quick hack that might help you is to take either sched_4bsd.c or > sched_ule.c (depending on which you are using) and comment out the > call to maybe_preempt(td) in sched_add() like so: > > + if 0 > if (maybe_preempt(td)) > return; > + endif OK, that's easy enough. :-) > I think I understand most of the underlying problem with much of the > recent (and not so recent) instability, but I haven't come up with > an acceptable solution yet. If anyone is interested in helping > (code, not test), please let me know. I just upgraded again and rebuilt the world/kernel. Tweaked my kernel config a bit to simplify it. We'll see if this problem continues or not. Thanks! -- Conrad J. Sabatier <conrads@cox.net> -- "In Unix veritas"
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