Re: [PATCH] perf: implement recording/reporting per-cpu samples

From: Peter Zijlstra
Date: Mon May 03 2010 - 16:42:44 EST


On Mon, 2010-05-03 at 13:38 -0700, Arun Sharma wrote:
> Enable PERF_SAMPLE_CPU by default. Implement --sort cpu.

Why? The downside is that you unconditionally grow each sample and thus
increase the overhead for something that doesn't make sense for the
normal (task-inherit) case.



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