[Bug 88976] New: [SNB]igt/pm_rc6_residency sub case fail.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88976

            Bug ID: 88976
           Summary: [SNB]igt/pm_rc6_residency sub case fail.
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: hengx.ding at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 113170
  --> https://bugs.freedesktop.org/attachment.cgi?id=113170&action=edit
dmesg

==System Environment==
--------------------------
Regression: yes
Non-working platforms:  SNB

==kernel==
--------------------------
drm-intel-nightly/0eafcbf6bc5917efd97c9916329c6f859cfb41ed(2015-02-04)


==Bug detailed description==
-----------------------------
root at x-sgb4:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./pm_rc6_residency
--run-subtest rc6pp-accuracy
IGT-Version: 1.9-g87edb51 (x86_64) (Linux:
3.19.0-rc7_drm-intel-nightly_9583cb_20150205+ x86_64)
(pm_rc6_residency:4089) CRITICAL: Test assertion failure function
residency_accuracy, file pm_rc6_residency.c:103:
(pm_rc6_residency:4089) CRITICAL: Failed assertion: diff >= (SLEEP_DURATION -
RC6_FUDGE)
(pm_rc6_residency:4089) CRITICAL: GPU was not in RC6 long enough. Check that
the GPU is as idle as possible(ie. no X, running and running no other tests)
Subtest rc6pp-accuracy: FAIL (0.000s)
root at x-sgb4:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./pm_rc6_residency
--run-subtest rc6p-accuracy
IGT-Version: 1.9-g87edb51 (x86_64) (Linux:
3.19.0-rc7_drm-intel-nightly_9583cb_20150205+ x86_64)
(pm_rc6_residency:4090) CRITICAL: Test assertion failure function
residency_accuracy, file pm_rc6_residency.c:103:
(pm_rc6_residency:4090) CRITICAL: Failed assertion: diff >= (SLEEP_DURATION -
RC6_FUDGE)
(pm_rc6_residency:4090) CRITICAL: GPU was not in RC6 long enough. Check that
the GPU is as idle as possible(ie. no X, running and running no other tests)
Subtest rc6p-accuracy: FAIL (0.000s)

Affected cases:
igt/pm_rc6_residency/rc6p-accuracy
igt/pm_rc6_residency/rc6pp-accuracy


==Reproduce steps==
---------------------------- 
1.  ./pm_rc6_residency --run-subtest rc6p-accuracy

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