Re: [PATCH 01/14] perf/x86: Introduce PERF_RECORD_OVERHEAD

From: Peter Zijlstra
Date: Thu Nov 24 2016 - 08:51:04 EST


On Thu, Nov 24, 2016 at 01:45:28PM +0000, Liang, Kan wrote:
> > I think we should make this optional/configurable like the rest of the aux
> > events, like below..
> >
>
> The overhead logging only happens when event is going to be disabled or
> the task is scheduling out. It should not be much and expensive.
>
> Peter,
>
> What do you think?
> Should we make it configurable?

Is there a downside to having it optional?