* Ingo Molnar <mingo@elte.hu> wrote:

quoted text
> There's far more normal mutex fastpath use during an AIM7 run than any 
> BKL use. So if it's due to any direct fastpath overhead and the 
> resulting widening of the window for the real slowdown, we should see 
> a severe slowdown on AIM7 with CONFIG_MUTEX_DEBUG=y. Agreed?

my own guesstimate about AIM7 performance impact resulting out of 
CONFIG_MUTEX_DEBUG=y: performance overhead will not be measurable, or 
will at most be in the sub-1% range. But i've been badly wrong before :)

	Ingo
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