Re: x86 ptep_get_and_clear question

From: Manfred Spraul (manfred@colorfullife.com)
Date: Thu Feb 15 2001 - 16:29:11 EST

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Manfred Spraul wrote:
>
> I just benchmarked a single flush_tlb_page().
>
> Pentium II 350: ~ 2000 cpu ticks.
> Pentium III 850: ~ 3000 cpu ticks.
>
I forgot the important part:
SMP, including a smp_call_function() IPI.

IIRC Ingo wrote that a local 'invplg' is around 100 ticks.

--
	Manfred
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