[Bug 88605] New: [ILK/SNB/IVB/HSW]igt/gem_concurrent_blit/gpu-gtt-overwrite-source-interruptible takes more than 10 minutes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88605

            Bug ID: 88605
           Summary: [ILK/SNB/IVB/HSW]igt/gem_concurrent_blit/gpu-gtt-overw
                    rite-source-interruptible takes more than 10 minutes
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 112510
  --> https://bugs.freedesktop.org/attachment.cgi?id=112510&action=edit
dmesg

==System Environment==
--------------------------
Regression: not sure, new case

Non-working platforms: ILK/SNB/IVB/HSW

==kernel==
--------------------------
drm-intel-nightly/be0b52082364f73b6ffa2841ec4ded2ddecfa881
commit be0b52082364f73b6ffa2841ec4ded2ddecfa881
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Sat Jan 17 10:41:34 2015 +0100

    drm-intel-nightly: 2015y-01m-17d-09h-41m-12s UTC integration manifest

==Bug detailed description==
-----------------------------
It takes more than 10 minutes. Test on SNB, it takes 17 minutes.
Following gem_concurrent_blit subcases also take more than 10 minutes:
igt/gem_concurrent_blit/gpu-gtt-overwrite-source-rev-interruptible
igt/gem_concurrent_blit/gpuX-gtt-overwrite-source-interruptible
igt/gem_concurrent_blit/gpuX-gtt-overwrite-source-rev-interruptible


output:
[root at x-hsw27 tests]# time ./gem_concurrent_blit --run-subtest
gpu-gtt-overwrite-source-interruptible
IGT-Version: 1.9-g20d6e0f (x86_64) (Linux:
3.19.0-rc4_drm-intel-nightly_be0b52_20150119+ x86_64)
using 2x512 buffers, each 1MiB
Subtest gpu-gtt-overwrite-source-interruptible: SUCCESS (1061.570s)

real    17m57.404s
user    0m46.221s
sys     17m14.297s

==Reproduce steps==
---------------------------- 
1.time ./gem_concurrent_blit --run-subtest
gpu-gtt-overwrite-source-interruptible

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