[Bug 67062] New: [HSW ULT bisected] Glbenchmark2.7.0 EgyptHDoffscreen performance reduce by 10%.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67062

          Priority: medium
            Bug ID: 67062
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW ULT bisected] Glbenchmark2.7.0 EgyptHDoffscreen
                    performance reduce by 10%.
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: yex.tian at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

System Environment:       
----------------------------------------------
Platform: HSW ULT 
Libdrm:    (master)libdrm-2.4.46-2-gfea5408098c3c3057958e85ea9d7146f0b08749e
Mesa:    (master)148f0deb065d8b64e15f951063fac40650ac257a
Xserver:   
(master)xorg-server-1.14.99.1-137-g74469895e39fa38337f59edd64c4031ab9bb51d8
Xf86_video_intel:(master)2.21.12-12-g6c8b15d321044d4a81cb187cc5e1ac094eb82367
Cairo:    (master)03c81d414d4edb710c91f96ddb7dbf73e5432583
Libva:    (staging)6ba83cd306629e7579912627edab7a86d8c9ae1c
Libva_intel_driver: (staging)1caf179b1425b13cacaa421c688c6df8369668c6
Kernel:    (drm-intel-next-queued)8f588cfc349bbbd8ae62a13679b9efba41645064

Bug detailed description:
----------------------------------------------
Glbenchmark2.7.0 Glbenchmark2.7.0 EgyptHDoffscreen performance reduce by 10% on
HSW ULT.
The problem doesn’t exist on HSW desktop and IVB. please see dmesg and Xorg.0
attached.
It's Kernel(-intel-next-queued) regression. By bisected, show that 0d8ff15e9 is
the first bad commit.

commit 0d8ff15e9a15f2b393e53337a107b7a1e5919b6d
Author: Ben Widawsky <benjamin.widawsky at intel.com>
Date:   Thu Jul 4 11:02:03 2013 -0700

drm/i915/hsw: Set correct Haswell PTE encodings.

Performance
----------------------------------------------
                                             50b44a4   0d8ff1
EgyptHD_C24Z16_FixedTime_Offscreen              96       86 
TRex_C24Z16_FixedTimeStep_Offscreen             56       50

Reproduce steps:
---------------------------------------------
1, xinit&
2, vblank_mode=0 ./GLBenchmark -data ../../data/  -w 1920 -h 1080 -t 2701101

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20130719/a68ffe27/attachment.html>