[amd64] Instability worse than ever
Brian Fundakowski Feldman
green at freebsd.org
Sat Jul 24 20:53:17 PDT 2004
On Sat, Jul 24, 2004 at 08:33:57PM -0500, Conrad J. Sabatier wrote:
>
> 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.
Absolutely; I just set this up a few days ago, so I know this works with
-CURRENT. First, set the sio.0.flags hint in /boot/device.hints to
"0x90" so it is a vailable for use as a serial console. Then, set up
the kernel with DDB and KDB and set /etc/sysctl.conf to turn the
debug.debugger_on_panic switch to 1. You should probably be running with
at least WITNESS and INVARIANTS, but not necessarily DIAGNOSTIC.
--
Brian Fundakowski Feldman \'[ FreeBSD ]''''''''''\
<> green at FreeBSD.org \ The Power to Serve! \
Opinions expressed are my own. \,,,,,,,,,,,,,,,,,,,,,,\
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