On Tue, 3 Nov 1998, Tom Woelfel wrote:
> Hmm, during the last weekend I've tried this (otherwise I have to pull
> out the powercord after shutting down my machine).
>
> The only thing I've used in the APM-mnue was 'power off on shutdown'.
> Suprisingly it works. 'shutdown -h' switches power off and 'reboot' is
> rebooting my machine. The usual test ('3 times "make -j zImage"')
> works fine. Maybe I have to push the machine a little bit harder to
> force an error ;-)
Dunno. All I know is that (as was noted in the message before mine) the
APM spec itself is supposedly fundamentally not SMP safe. It could be
that if you enable apm in an SMP kernel and don't actually set any of
the timers you are ok, because I think that the problem is a timing
issue. In that case it could be that you could enable the ability to
halt by command without being able to set a halt if idle.
Alan Cox (as I recall) had words on this issue once upon a time. They
are probably in the linux-smp archives. Then again, your system could
be unstable but you just haven't gotten there yet. There are exercises
stronger than make -j3, especially if (as is quite likely) the issue is
interrupt related. Try hitting the system with ttcp or netperf or any
other very high speed stream of interrupts.
rgb
Robert G. Brown http://www.phy.duke.edu/~rgb/
Duke University Dept. of Physics, Box 90305
Durham, N.C. 27708-0305
Phone: 1-919-660-2567 Fax: 919-660-2525 email:[EMAIL PROTECTED]
