Re: [PATCH v2] mm: emit tracepoint when RSS changes by threshold

From: Daniel Colascione
Date: Wed Sep 04 2019 - 00:52:00 EST

On Tue, Sep 3, 2019 at 9:45 PM Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote:
> On Tue, Sep 3, 2019 at 1:09 PM Joel Fernandes (Google)
> <joel@xxxxxxxxxxxxxxxxx> wrote:
> >
> > Useful to track how RSS is changing per TGID to detect spikes in RSS and
> > memory hogs. Several Android teams have been using this patch in various
> > kernel trees for half a year now. Many reported to me it is really
> > useful so I'm posting it upstream.

It's also worth being able to turn off the per-task memory counter
caching, otherwise you'll have two levels of batching before the
counter gets updated, IIUC.