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SubjectRe: REGRESSION: Performance regressions from switching anon_vma->lock to mutex
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On Wed, 2011-06-15 at 22:17 +0200, Ingo Molnar wrote:

>
> have you used callgraph profiling (perf record -g) or flat profiling?
> Flat profiling can be misleading when there's proxy work done.
>

I've used callgraph profiling to see the call stack.

Tim



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