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Re: [PATCH 2/2] perf,core: use parent avg sample period as child initial period

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On Wed, Jan 18, 2017 at 08:21:02AM -0500, kan.liang@intel.com wrote:
> From: Kan Liang <kan.liang@intel.com>
> 
> perf brings additional overhead when monitoring the task which
> frequently generates child task.
> 
> When inheriting a event from parent task to child task, the
> sample_period of original parent event (parent_event->parent) will be
> assigned to child event as its initial period, which is usually the
> default sample_period 1.


Why is that mostly 1? I would expect the parent event's sample_period to
ramp up as well.

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[PATCH 2/2] perf,core: use parent avg sample period as child initial period kan.liang@intel.com - 2017-01-18 21:20 +0100
  Re: [PATCH 2/2] perf,core: use parent avg sample period as child  initial period Peter Zijlstra <peterz@infradead.org> - 2017-01-25 16:40 +0100
    RE: [PATCH 2/2] perf,core: use parent avg sample period as child  initial period "Liang, Kan" <kan.liang@intel.com> - 2017-01-29 18:10 +0100

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