[Bug 98981] [IVB] igt/gem_exec_suspend/basic-s3 hangs when used with intel-ci/fast-feedback.testlist

[Bug 98981] [IVB] igt/gem_exec_suspend/basic-s3 hangs when used with intel-ci/fast-feedback.testlist

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https://bugs.freedesktop.org/show_bug.cgi?id=98981

            Bug ID: 98981
           Summary: [IVB] igt/gem_exec_suspend/basic-s3 hangs when used
                    with intel-ci/fast-feedback.testlist
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: IGT
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: dorota.czaplejewicz@collabora.co.uk

The test igt/gem_exec_suspend/basic-s3 does not wake up from suspend when
invoked as part of the testlis tintel-ci/fast-feedback.testlist

Manual wake up is needed, afterwards test reports pass.

I am in the process of finding the minimal test case.

So far, the smallest test set that triggers this:
sudo IGT_TEST_ROOT=`pwd`/intel-gpu-tools/tests ./piglit/piglit run igt -o
results -l verbose -s --test-list
intel-gpu-tools/tests/intel-ci/fast-feedback.testlist -t gem_exec

While specifying tests separately, the hangup does not occur:



Log of the complete run with a manual wakeup:
Time    0:04:10.425812
Stdout  

IGT-Version: 1.17-g901c2bb (x86_64) (Linux: 4.9.0-rc7-CI-CI_DRM_1849+ x86_64)
rtcwake: wakeup from "mem" using /dev/rtc0 at Sat Dec  3 11:19:08 2016
Subtest basic-S3: SUCCESS (18.487s)


System:
Fedora 24, i7-3770, ASRock H77 Pro4/MVP

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[Bug 98981] [IVB] igt/gem_exec_suspend/basic-s3 hangs when used with intel-ci/fast-feedback.testlist

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https://bugs.freedesktop.org/show_bug.cgi?id=98981

--- Comment #1 from Dorota Czaplejewicz <dorota.czaplejewicz@collabora.co.uk> ---
Created attachment 128317
  --> https://bugs.freedesktop.org/attachment.cgi?id=128317&action=edit
Increases the delay between the suspend request and the alarm event

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[Bug 98981] [IVB] igt/gem_exec_suspend/basic-s3 hangs when used with intel-ci/fast-feedback.testlist

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https://bugs.freedesktop.org/show_bug.cgi?id=98981

--- Comment #2 from Dorota Czaplejewicz <dorota.czaplejewicz@collabora.co.uk> ---
The problem doesn't seem to appear every time now. My suspicion is that the
wakeup alarm comes before the system is fully suspended, because increasing the
delay makes the issue go away completely.

I have attached a patch that bumps the interval from 15s to 20s.

Perhaps an ideal solution - without making the timeout very large - would be to
set a few repeating alarms in succession when such functionality is available,
and if that's not possible, to fall back on a large enough value.
Unfortunately, I didn't find any easy way to do that.

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[Bug 98981] [IVB] igt/gem_exec_suspend/basic-s3 hangs when used with intel-ci/fast-feedback.testlist

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https://bugs.freedesktop.org/show_bug.cgi?id=98981

--- Comment #3 from Chris Wilson <chris@chris-wilson.co.uk> ---
One question is why is taking longer than 15s (from time of alarm setup) to
suspend? That in itself a failure to meet user expectations. (But yes igt, or
at least the CI test harness, needs to be robust.)

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[Bug 98981] [IVB] igt/gem_exec_suspend/basic-s3 hangs when used with intel-ci/fast-feedback.testlist

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https://bugs.freedesktop.org/show_bug.cgi?id=98981

--- Comment #4 from Dorota Czaplejewicz <dorota.czaplejewicz@collabora.co.uk> ---
Perhaps I can time the process if you think it's relevant - currently I'm
guessing the reason. Any suggestions on capturing timestamps?

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[Bug 98981] [IVB] igt/gem_exec_suspend/basic-s3 hangs when used with intel-ci/fast-feedback.testlist

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https://bugs.freedesktop.org/show_bug.cgi?id=98981

--- Comment #5 from Chris Wilson <chris@chris-wilson.co.uk> ---
Something like initcall_debug should show the times during suspend as well.
Otherwise it will be a chore of adding printk to ensure we have timing events
along the relevant callchains.

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[Bug 98981] [IVB] igt/gem_exec_suspend/basic-s3 hangs when used with intel-ci/fast-feedback.testlist

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https://bugs.freedesktop.org/show_bug.cgi?id=98981

Chris Wilson <chris@chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

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[Bug 98981] [IVB] igt/gem_exec_suspend/basic-s3 hangs when used with intel-ci/fast-feedback.testlist

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https://bugs.freedesktop.org/show_bug.cgi?id=98981

--- Comment #6 from Elizabeth <elizabethx.de.la.torre.mena@intel.com> ---
Hello everybody,
Any update at this? According to
https://intel-gfx-ci.01.org/tree/drm-tip/fi-ivb-3520m.html and
https://intel-gfx-ci.01.org/tree/drm-tip/fi-ivb-3770.html the test
igt@gem_exec_suspend@basic-s3 haven't failed recently.

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[Bug 98981] [IVB] igt/gem_exec_suspend/basic-s3 hangs when used with intel-ci/fast-feedback.testlist

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https://bugs.freedesktop.org/show_bug.cgi?id=98981

Lakshmi <lakshminarayana.vudum@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #7 from Lakshmi <lakshminarayana.vudum@intel.com> ---
This bug is outdated. Replace with the one used in CIbuglog.

*** This bug has been marked as a duplicate of bug 106220 ***

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[Bug 98981] [IVB] igt/gem_exec_suspend/basic-s3 hangs when used with intel-ci/fast-feedback.testlist

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Lakshmi <lakshminarayana.vudum@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

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