From: Joel Fernandes <joel@joelfernandes.org>
To: Daniel Colascione <dancol@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>,
LKML <linux-kernel@vger.kernel.org>,
Tim Murray <timmurray@google.com>,
Carmen Jackson <carmenjackson@google.com>,
Mayank Gupta <mayankgupta@google.com>,
Steven Rostedt <rostedt@goodmis.org>,
Minchan Kim <minchan@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
kernel-team <kernel-team@android.com>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
Dan Williams <dan.j.williams@intel.com>,
Jerome Glisse <jglisse@redhat.com>, linux-mm <linux-mm@kvack.org>,
Matthew Wilcox <willy@infradead.org>,
Michal Hocko <mhocko@suse.cz>,
Ralph Campbell <rcampbell@nvidia.com>,
Vlastimil Babka <vbabka@suse.cz>
Subject: Re: [PATCH v2] mm: emit tracepoint when RSS changes by threshold
Date: Wed, 4 Sep 2019 01:15:49 -0400 [thread overview]
Message-ID: <20190904051549.GB256568@google.com> (raw)
In-Reply-To: <CAKOZuesWV9yxbS9+T5+p1Ty1-=vFeYcHuO=6MgzTY8akMhbFbQ@mail.gmail.com>
On Tue, Sep 03, 2019 at 09:51:20PM -0700, Daniel Colascione wrote:
> On Tue, Sep 3, 2019 at 9:45 PM Suren Baghdasaryan <surenb@google.com> wrote:
> >
> > On Tue, Sep 3, 2019 at 1:09 PM Joel Fernandes (Google)
> > <joel@joelfernandes.org> 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.
I prefer to keep split RSS accounting turned on if it is available. I think
discussing split RSS accounting is a bit out of scope of this patch as well.
Any improvements on that front can be a follow-up.
Curious, has split RSS accounting shown you any issue with this patch?
thanks,
- Joel
next prev parent reply other threads:[~2019-09-04 5:15 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-03 20:09 [PATCH v2] mm: emit tracepoint when RSS changes by threshold Joel Fernandes (Google)
2019-09-04 4:44 ` Suren Baghdasaryan
2019-09-04 4:51 ` Daniel Colascione
2019-09-04 5:15 ` Joel Fernandes [this message]
2019-09-04 5:42 ` Daniel Colascione
2019-09-04 14:59 ` Joel Fernandes
2019-09-04 17:15 ` Daniel Colascione
2019-09-04 23:59 ` sspatil
2019-09-04 5:02 ` Joel Fernandes
2019-09-04 5:38 ` Suren Baghdasaryan
2019-09-04 8:45 ` Michal Hocko
2019-09-04 15:32 ` Joel Fernandes
2019-09-04 15:37 ` Michal Hocko
2019-09-04 16:28 ` Joel Fernandes
2019-09-05 10:54 ` Michal Hocko
2019-09-05 14:14 ` Joel Fernandes
2019-09-05 14:20 ` Michal Hocko
2019-09-05 14:23 ` Joel Fernandes
2019-09-05 14:43 ` Michal Hocko
2019-09-05 16:03 ` Suren Baghdasaryan
2019-09-05 17:35 ` Steven Rostedt
2019-09-05 17:39 ` Suren Baghdasaryan
2019-09-05 17:43 ` Tim Murray
2019-09-05 17:47 ` Joel Fernandes
2019-09-05 17:51 ` Joel Fernandes
2019-09-05 19:56 ` Tom Zanussi
2019-09-05 20:24 ` Daniel Colascione
2019-09-05 20:32 ` Tom Zanussi
2019-09-05 21:14 ` Tom Zanussi
2019-09-05 22:12 ` Daniel Colascione
2019-09-05 22:51 ` Daniel Colascione
2019-09-05 17:50 ` Daniel Colascione
2019-09-06 0:59 ` Joel Fernandes
2019-09-06 1:15 ` Daniel Colascione
2019-09-06 3:01 ` Joel Fernandes
2019-09-04 17:17 ` Daniel Colascione
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