Re: [2.6.18-rc7-mm1] slow boot

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* Andi Kleen <[email protected]> wrote:

> "Jan Beulich" <[email protected]> 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.

	Ingo
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