Re: [2.6.18-rc7-mm1] slow boot
From: Ingo Molnar
Date: Fri Sep 29 2006 - 14:48:52 EST
* Andi Kleen <ak@xxxxxxx> wrote:
> "Jan Beulich" <jbeulich@xxxxxxxxxx> writes:
> > There's nothing stack trace/unwind related among the functions listed at all afaics.
> > I don't know much about how profiling works, is it perhaps just missing something?
> Perhaps lockdep calls them with interrupts off? The old profiler
> doesn't support profiling with interrupts off. oprofile does, but it
> cannot be used at early boot.
Yes, lockdep does everything that changes the dependency graph(s) with
irqs off. Jan, i bounced you the mail with the function traces included,
that should show you the overhead points.
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