Re: [PATCH] perf stat: Pass PERF_STAT_RUN environment variable for each run

Peter Zijlstra
2014-07-17T08:26:27Z

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On Thu, Jul 17, 2014 at 05:21:06PM +0900, Namhyung Kim wrote:
> When perf stat runs multiple times via -r option, it's sometimes
> useful for a workload to know which run it executing. So pass new
> PERF_STAT_RUN environment variable to the workload for each run
> (starting from 1).

This seems counter intuitive, runs should be _identical_ otherwise
there's no point. That means the workload should very much _not_ know
these things.

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