On Wed, Jan 18, 2017 at 08:21:02AM -0500, kan.li...@intel.com wrote: > From: Kan Liang <kan.li...@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.
