Re: [PATCH v1 0/2] perf: Drop leaked kernel samples
From: Peter Zijlstra
Date: Fri Jun 15 2018 - 04:12:37 EST
On Fri, Jun 15, 2018 at 04:01:45PM +0800, Jin, Yao wrote:
> Bring more overhead to kernel if we zero the bits considering the number of
> leaked samples may be not too small?
Keeping the samples at least allows you to know how many samples
happened and such things.
> And the skid information may be interesting (see example of hitting on
> page_fault in previous mail). If we zero it, we will not know.
If you throw them out the window you also don't know, do you?