> > > to get symbolic stack backdumps for the wakeup points, and add
> > > trace_special_sym() calls to generate extra stackdump entries at
> > > arbitrary places. schedule() does not have it right now - it might
> > > make sense to add it.
> >
> > OK, this helped.
> >
> > It looks like the delays are caused by the page allocator, and not
> > UML. Which is good news, because I'm supposed to understand memory
> > management better than scheduling.
>
> heh :-) Scheduling isnt hard either - and looking at traces (especially
> with mcount_enabled=1) certainly helps.
I still don't know what mcount_enabled=1 should do. I didn't see any
difference in the trace after enabling it.
Miklos
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