[Intel-gfx] [PATCH i-g-t] kms_atomic_transition: Output more finegrained progress info to avoid CI watchdog timeout

[Lofstedt, Marta]

> -----Original Message-----
> From: Intel-gfx [mailto:intel-gfx-bounces at lists.freedesktop.org] On Behalf
> Of Daniel Vetter
> Sent: Wednesday, October 18, 2017 5:36 PM
> To: Latvala, Petri <petri.latvala at intel.com>
> Cc: intel-gfx at lists.freedesktop.org
> Subject: Re: [Intel-gfx] [PATCH i-g-t] kms_atomic_transition: Output more
> finegrained progress info to avoid CI watchdog timeout
> 
> On Wed, Oct 18, 2017 at 02:43:38PM +0300, Petri Latvala wrote:
> > On Wed, Oct 18, 2017 at 02:29:33PM +0300, Imre Deak wrote:
> > > The CI software watchdog (owatch) will timeout if the test doesn't
> > > output anything for a long time on standard out or error. At least
> > > the plane-all-modeset-transition and
> > > plane-all-modeset-transition-fences
> > > subtests run without any output longer than the watchdog timeout, so
> > > output some more progress info.
> >
> > No, owatch is wrapping piglit, and pings the watchdog if _piglit_
> > prints anything. Which it does on start/exit of a test.
> 
> tbh this sounds like owatch being dense and it shouldn't try to reboot this
> quickly. What's the current owatch timeout?
> 
> Aside: What exactly does owatch give us? I thought jenkins also watches
> machines and reboots them using the ac switch ... And owatch provides
> spurious reboots?
Daniel,
Owatch gives us the knowledge that is was a test that took too long. I.e. we will know that it was not a system hang. 
 We also know that the NMI watchdog didn't trigger. 
I believe this is extremely useful information when you are starting to debug the issue

Imre if you believe that owatch is preventing you from getting information to debug why these test are taking so extremely long time, it would be easy to increase the timeout or even do runs without it being enabled.

/Marta

> -Daniel
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
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