Re: 2.5.74-mm1

From: Andrew Morton (
Date: Sat Jul 05 2003 - 14:14:16 EST

Daniel Phillips <> wrote:
> The situation re scheduling in 2.5 feels much as
> the vm situation did in 2.3

I've been trying to avoid thinking about that comparison.

I don't think it's really, really bad at present. Just "should be a bit

> Kgdb is no help in
> diagnosing, as the kgdb stub also goes comatose, or at least the serial link
> does. No lockups have occurred so far when I was not interacting with the
> system via the keyboard or mouse. Suggestions?

Enable IO APIC, Local APIC, nmi watchdog. Use serial console, see if you
can get a sysrq trace out of it. That's `^A F T' in minicom.

I mean, it _has_ to be either stuck with interrupts on, or stuck with them off.
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