On Thu, Sep 05, 2019 at 06:15:43PM -0700, Daniel Colascione wrote:
[snip]
> > > > > > > The bigger improvement with the threshold is the number of trace
> > > > > > > records are
> > > > > > > almost halved by using a threshold. The number of records went
> > > > > > > from 4.6K to
> > > > > > >
On Thu, Sep 5, 2019 at 5:59 PM Joel Fernandes wrote:
> On Thu, Sep 05, 2019 at 10:50:27AM -0700, Daniel Colascione wrote:
> > On Thu, Sep 5, 2019 at 10:35 AM Steven Rostedt wrote:
> > > On Thu, 5 Sep 2019 09:03:01 -0700
> > > Suren Baghdasaryan wrote:
> > >
> > > > On Thu, Sep 5, 2019 at 7:43
On Thu, Sep 05, 2019 at 10:50:27AM -0700, Daniel Colascione wrote:
> On Thu, Sep 5, 2019 at 10:35 AM Steven Rostedt wrote:
> > On Thu, 5 Sep 2019 09:03:01 -0700
> > Suren Baghdasaryan wrote:
> >
> > > On Thu, Sep 5, 2019 at 7:43 AM Michal Hocko wrote:
> > > >
> > > > [Add Steven]
> > > >
> > >
On Thu, Sep 5, 2019 at 3:12 PM Daniel Colascione wrote:
> Basically, what I have in mind is this:
Actually --- I wonder whether there's already enough power in the
trigger mechanism to do this without any code changes to ftrace
histograms themselves. I'm trying to think of the minimum additional
On Thu, Sep 5, 2019 at 2:14 PM Tom Zanussi wrote:
>
> On Thu, 2019-09-05 at 13:24 -0700, Daniel Colascione wrote:
> > On Thu, Sep 5, 2019 at 12:56 PM Tom Zanussi
> > wrote:
> > > On Thu, 2019-09-05 at 13:51 -0400, Joel Fernandes wrote:
> > > > On Thu, Sep 05, 2019 at 01:47:05PM -0400, Joel
On Thu, 2019-09-05 at 13:24 -0700, Daniel Colascione wrote:
> On Thu, Sep 5, 2019 at 12:56 PM Tom Zanussi
> wrote:
> > On Thu, 2019-09-05 at 13:51 -0400, Joel Fernandes wrote:
> > > On Thu, Sep 05, 2019 at 01:47:05PM -0400, Joel Fernandes wrote:
> > > > On Thu, Sep 05, 2019 at 01:35:07PM -0400,
Hi,
On Thu, 2019-09-05 at 13:24 -0700, Daniel Colascione wrote:
> On Thu, Sep 5, 2019 at 12:56 PM Tom Zanussi
> wrote:
> > On Thu, 2019-09-05 at 13:51 -0400, Joel Fernandes wrote:
> > > On Thu, Sep 05, 2019 at 01:47:05PM -0400, Joel Fernandes wrote:
> > > > On Thu, Sep 05, 2019 at 01:35:07PM
On Thu, Sep 5, 2019 at 12:56 PM Tom Zanussi wrote:
> On Thu, 2019-09-05 at 13:51 -0400, Joel Fernandes wrote:
> > On Thu, Sep 05, 2019 at 01:47:05PM -0400, Joel Fernandes wrote:
> > > On Thu, Sep 05, 2019 at 01:35:07PM -0400, Steven Rostedt wrote:
> > > >
> > > >
> > > > [ Added Tom ]
> > > >
> >
Hi,
On Thu, 2019-09-05 at 13:51 -0400, Joel Fernandes wrote:
> On Thu, Sep 05, 2019 at 01:47:05PM -0400, Joel Fernandes wrote:
> > On Thu, Sep 05, 2019 at 01:35:07PM -0400, Steven Rostedt wrote:
> > >
> > >
> > > [ Added Tom ]
> > >
> > > On Thu, 5 Sep 2019 09:03:01 -0700
> > > Suren
On Thu, Sep 05, 2019 at 01:47:05PM -0400, Joel Fernandes wrote:
> On Thu, Sep 05, 2019 at 01:35:07PM -0400, Steven Rostedt wrote:
> >
> >
> > [ Added Tom ]
> >
> > On Thu, 5 Sep 2019 09:03:01 -0700
> > Suren Baghdasaryan wrote:
> >
> > > On Thu, Sep 5, 2019 at 7:43 AM Michal Hocko wrote:
> >
On Thu, Sep 5, 2019 at 10:35 AM Steven Rostedt wrote:
> On Thu, 5 Sep 2019 09:03:01 -0700
> Suren Baghdasaryan wrote:
>
> > On Thu, Sep 5, 2019 at 7:43 AM Michal Hocko wrote:
> > >
> > > [Add Steven]
> > >
> > > On Wed 04-09-19 12:28:08, Joel Fernandes wrote:
> > > > On Wed, Sep 4, 2019 at
On Thu, Sep 05, 2019 at 01:35:07PM -0400, Steven Rostedt wrote:
>
>
> [ Added Tom ]
>
> On Thu, 5 Sep 2019 09:03:01 -0700
> Suren Baghdasaryan wrote:
>
> > On Thu, Sep 5, 2019 at 7:43 AM Michal Hocko wrote:
> > >
> > > [Add Steven]
> > >
> > > On Wed 04-09-19 12:28:08, Joel Fernandes wrote:
On Thu, Sep 5, 2019 at 9:03 AM Suren Baghdasaryan wrote:
> I might misunderstand this but is the issue here actually throttling
> of the sheer number of trace records or tracing large enough changes
> to RSS that user might care about? Small changes happen all the time
> but we are likely not
On Thu, Sep 5, 2019 at 10:35 AM Steven Rostedt wrote:
>
>
>
> [ Added Tom ]
>
> On Thu, 5 Sep 2019 09:03:01 -0700
> Suren Baghdasaryan wrote:
>
> > On Thu, Sep 5, 2019 at 7:43 AM Michal Hocko wrote:
> > >
> > > [Add Steven]
> > >
> > > On Wed 04-09-19 12:28:08, Joel Fernandes wrote:
> > > > On
[ Added Tom ]
On Thu, 5 Sep 2019 09:03:01 -0700
Suren Baghdasaryan wrote:
> On Thu, Sep 5, 2019 at 7:43 AM Michal Hocko wrote:
> >
> > [Add Steven]
> >
> > On Wed 04-09-19 12:28:08, Joel Fernandes wrote:
> > > On Wed, Sep 4, 2019 at 11:38 AM Michal Hocko wrote:
> > > >
> > > > On Wed
On Thu, Sep 5, 2019 at 7:43 AM Michal Hocko wrote:
>
> [Add Steven]
>
> On Wed 04-09-19 12:28:08, Joel Fernandes wrote:
> > On Wed, Sep 4, 2019 at 11:38 AM Michal Hocko wrote:
> > >
> > > On Wed 04-09-19 11:32:58, Joel Fernandes wrote:
> [...]
> > > > but also for reducing
> > > > tracing noise.
[Add Steven]
On Wed 04-09-19 12:28:08, Joel Fernandes wrote:
> On Wed, Sep 4, 2019 at 11:38 AM Michal Hocko wrote:
> >
> > On Wed 04-09-19 11:32:58, Joel Fernandes wrote:
[...]
> > > but also for reducing
> > > tracing noise. Flooding the traces makes it less useful for long traces
> > > and
>
On Thu, Sep 05, 2019 at 04:20:10PM +0200, Michal Hocko wrote:
> On Thu 05-09-19 10:14:52, Joel Fernandes wrote:
> > On Thu, Sep 05, 2019 at 12:54:24PM +0200, Michal Hocko wrote:
> > > On Wed 04-09-19 12:28:08, Joel Fernandes wrote:
> > > > On Wed, Sep 4, 2019 at 11:38 AM Michal Hocko wrote:
> > >
On Thu 05-09-19 10:14:52, Joel Fernandes wrote:
> On Thu, Sep 05, 2019 at 12:54:24PM +0200, Michal Hocko wrote:
> > On Wed 04-09-19 12:28:08, Joel Fernandes wrote:
> > > On Wed, Sep 4, 2019 at 11:38 AM Michal Hocko wrote:
> > > >
> > > > On Wed 04-09-19 11:32:58, Joel Fernandes wrote:
> > > > >
On Thu, Sep 05, 2019 at 12:54:24PM +0200, Michal Hocko wrote:
> On Wed 04-09-19 12:28:08, Joel Fernandes wrote:
> > On Wed, Sep 4, 2019 at 11:38 AM Michal Hocko wrote:
> > >
> > > On Wed 04-09-19 11:32:58, Joel Fernandes wrote:
> > > > On Wed, Sep 04, 2019 at 10:45:08AM +0200, Michal Hocko wrote:
On Wed 04-09-19 12:28:08, Joel Fernandes wrote:
> On Wed, Sep 4, 2019 at 11:38 AM Michal Hocko wrote:
> >
> > On Wed 04-09-19 11:32:58, Joel Fernandes wrote:
> > > On Wed, Sep 04, 2019 at 10:45:08AM +0200, Michal Hocko wrote:
> > > > On Tue 03-09-19 16:09:05, Joel Fernandes (Google) wrote:
> > >
On Wed, Sep 04, 2019 at 10:15:10AM -0700, 'Daniel Colascione' via kernel-team
wrote:
> On Wed, Sep 4, 2019 at 7:59 AM Joel Fernandes wrote:
> >
> > On Tue, Sep 03, 2019 at 10:42:53PM -0700, Daniel Colascione wrote:
> > > On Tue, Sep 3, 2019 at 10:15 PM Joel Fernandes
> > > wrote:
> > > >
> > >
On Wed, Sep 4, 2019 at 8:38 AM Michal Hocko wrote:
> > but also for reducing
> > tracing noise. Flooding the traces makes it less useful for long traces and
> > post-processing of traces. IOW, the overhead reduction is a bonus.
>
> This is not really anything special for this tracepoint though.
>
On Wed, Sep 4, 2019 at 7:59 AM Joel Fernandes wrote:
>
> On Tue, Sep 03, 2019 at 10:42:53PM -0700, Daniel Colascione wrote:
> > On Tue, Sep 3, 2019 at 10:15 PM Joel Fernandes
> > wrote:
> > >
> > > On Tue, Sep 03, 2019 at 09:51:20PM -0700, Daniel Colascione wrote:
> > > > On Tue, Sep 3, 2019 at
On Wed, Sep 4, 2019 at 11:38 AM Michal Hocko wrote:
>
> On Wed 04-09-19 11:32:58, Joel Fernandes wrote:
> > On Wed, Sep 04, 2019 at 10:45:08AM +0200, Michal Hocko wrote:
> > > On Tue 03-09-19 16:09:05, Joel Fernandes (Google) wrote:
> > > > Useful to track how RSS is changing per TGID to detect
On Wed 04-09-19 11:32:58, Joel Fernandes wrote:
> On Wed, Sep 04, 2019 at 10:45:08AM +0200, Michal Hocko wrote:
> > On Tue 03-09-19 16:09:05, Joel Fernandes (Google) wrote:
> > > Useful to track how RSS is changing per TGID to detect spikes in RSS and
> > > memory hogs. Several Android teams have
On Wed, Sep 04, 2019 at 10:45:08AM +0200, Michal Hocko wrote:
> On Tue 03-09-19 16:09:05, Joel Fernandes (Google) 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
On Tue, Sep 03, 2019 at 10:42:53PM -0700, Daniel Colascione wrote:
> On Tue, Sep 3, 2019 at 10:15 PM Joel Fernandes wrote:
> >
> > On Tue, Sep 03, 2019 at 09:51:20PM -0700, Daniel Colascione wrote:
> > > On Tue, Sep 3, 2019 at 9:45 PM Suren Baghdasaryan
> > > wrote:
> > > >
> > > > On Tue, Sep
On Tue 03-09-19 16:09:05, Joel Fernandes (Google) 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
On Tue, Sep 3, 2019 at 10:15 PM Joel Fernandes wrote:
>
> On Tue, Sep 03, 2019 at 09:51:20PM -0700, Daniel Colascione wrote:
> > On Tue, Sep 3, 2019 at 9:45 PM Suren Baghdasaryan wrote:
> > >
> > > On Tue, Sep 3, 2019 at 1:09 PM Joel Fernandes (Google)
> > > wrote:
> > > >
> > > > Useful to
On Tue, Sep 3, 2019 at 10:02 PM Joel Fernandes wrote:
>
> On Tue, Sep 03, 2019 at 09:44:51PM -0700, Suren Baghdasaryan wrote:
> > On Tue, Sep 3, 2019 at 1:09 PM Joel Fernandes (Google)
> > wrote:
> > >
> > > Useful to track how RSS is changing per TGID to detect spikes in RSS and
> > > memory
On Tue, Sep 03, 2019 at 09:51:20PM -0700, Daniel Colascione wrote:
> On Tue, Sep 3, 2019 at 9:45 PM Suren Baghdasaryan wrote:
> >
> > On Tue, Sep 3, 2019 at 1:09 PM Joel Fernandes (Google)
> > wrote:
> > >
> > > Useful to track how RSS is changing per TGID to detect spikes in RSS and
> > >
On Tue, Sep 03, 2019 at 09:44:51PM -0700, Suren Baghdasaryan wrote:
> On Tue, Sep 3, 2019 at 1:09 PM Joel Fernandes (Google)
> 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
> >
On Tue, Sep 3, 2019 at 9:45 PM Suren Baghdasaryan wrote:
>
> On Tue, Sep 3, 2019 at 1:09 PM Joel Fernandes (Google)
> 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
On Tue, Sep 3, 2019 at 1:09 PM Joel Fernandes (Google)
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
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.
Initial patch developed by Tim Murray. Changes I
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