Mathieu Desnoyers wrote:
quoted text
> 
> I can't argue about the benefit of using VM CPU pinning to manage
> resources because I don't use it myself, but I ran some tests out of
> curiosity to find if uncontended locks were that cheap, and it turns out
> they aren't. Here are the results :
> 
> Xeon 2.0GHz
> 
> Summary
> 
> make -j1 kernel/      33.94 +/- 0.07         34.91 +/- 0.27      2.8 %
> hackbench 50           2.99 +/- 0.01          3.74 +/- 0.01     25.1 %
> 
> 1 CPU, replace smp lock prefixes with DS segment selector prefixes
> 1 CPU, noreplace-smp

For reference, could you also compare replace smp lock with NOPs?

	-hpa
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