Re: [RFC mm][PATCH 2/5] percpu cached mm counter

Ingo Molnar
2009-12-10T17:38:29Z

* Christoph Lameter <cl@linux-foundation.org> wrote:

> On Thu, 10 Dec 2009, Ingo Molnar wrote:
>
> >
> > No, i'm not suggesting that - i'm just suggesting that right now MM
> > stats are not very well suited to be exposed via perf. If we wanted to
> > measure/sample the information in /proc/<pid>/statm it just wouldnt be
> > possible. We have a few events like pagefaults and a few tracepoints as
> > well - but more would be possible IMO.
>
> vital MM stats are exposed via /proc/<pid> interfaces. Performance
> monitoring is something optional MM VM stats are used for VM decision
> on memory and process handling.

You list a few facts here but what is your point?

Ingo