Re: [PATCH v1 0/2] perf: Drop leaked kernel samples

Peter Zijlstra
2018-06-15T08:12:35Z

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?