On Mon, 2006-10-16 at 09:07 +0100, Catalin Marinas wrote:
> On 16/10/06, Mike Galbraith <[email protected]> wrote:
> > On Sun, 2006-10-15 at 07:59 +0000, Mike Galbraith wrote:
> >
> > > 2.6.19-rc1 + patch-2.6.19-rc1-kmemleak-0.11 compiles fine now (unless
> > > CONFIG_DEBUG_KEEP_INIT is set), boots and runs too.. but axle grease
> > > runs a lot faster ;-) I'll try a stripped down config sometime.
> >
> > My roughly three orders of magnitude (amusing to watch:) boot slowdown
> > turned out to be stack unwinding. With CONFIG_UNWIND_INFO disabled,
> > 2.6.19-rc2 + patch-2.6.19-rc1-kmemleak-0.11 runs just fine.
>
> Kmemleak introduces some overhead but shouldn't be that bad.
> DEBUG_SLAB also introduces an overhead by erasing the data in the
> allocated blocks.
2.6.18 with your rc6 patch booted normally with stack unwind enabled.
-Mike
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