[Bug 93394] [BDW/BSW Regression]GLbenchmark_V3.0_gl_driver/gl_driver_offscreen/Synmark2_v6_Batch6/Batch7 show performance dropped by 5%-12%

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93394

            Bug ID: 93394
           Summary: [BDW/BSW
                    Regression]GLbenchmark_V3.0_gl_driver/gl_driver_offscr
                    een/Synmark2_v6_Batch6/Batch7 show performance dropped
                    by 5%-12%
           Product: Mesa
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: wendy.wang at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 120536
  --> https://bugs.freedesktop.org/attachment.cgi?id=120536&action=edit
xorg.log

Test environment:
Failed platforms: BDW/BSW

Mesa Regression: Yes, bisect is under progress

Bad gfx sw stack info:
Mesa: git-7752bbc
Kernel: 4.4-rc4-drm-intel-nightly_ad271e_20151213+
xf83: 2.99.917-517-g6c4ffba
xserver: 1.18.99.1

GLbenchmark_V3.0_gl_driver/gl_driver_offscreen/Synmark2_v6_Batch6/Batch7 show
performance dropped by 5%-12%

Reproduce steps:
1. cd /gfxbench3_desktop/build/linux/gfxbench_Release/mainapp
2. export
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/games/OpenGL/gfxbench3_desktop/install/linux/lib
3. ./mainapp vblank_mode=0 -t gl_alu -fullscreen 1 -w 1920 -h 1080

xorg file has been attached.

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