Bug 83793

Summary: [BYT Regression]3D performance reduced 10%~70%
Product: DRI Reporter: zhoujian <jianx.zhou>
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: CLOSED FIXED QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: major    
Priority: high CC: intel-gfx-bugs
Version: unspecifiedKeywords: bisect_pending
Hardware: All   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:

Description zhoujian 2014-09-12 08:46:25 UTC 
Platform:BYT-M
Libdrm:(master)libdrm-2.4.56-21-g8c2ae1695913990cbe6c6a8aa294f354eba33bd0
Mesa:(master)5cf8d9f54b2e27721f8c79e553377834b3005022
Xserver:(master)xorg-server-1.16.0-152-g3a51418b2db353519a1779cf3cebbcc9afba2520
Xf86_video_intel:(master)2.99.916-9-gf2b62ab38f0f5970b2f868e10dc3499ff3118dbb
Cairo:(master)8e11a42e3e9b679dce97ac45cd8b47322536a253
Libva:(master)e0d25ece01e7aba819c910e98c4fb4706cdab055
Libva_intel_driver:(master)238d8077705711036d62a6d536311def3ef35035
Kernel:(drm-intel-nightly)72faa6a63351879b381bd9e4013f38bc94f11999

Bug detail description:
-------------------------------------------------------
3D performance reduced 10%~70% on BYT-M,this issue doesn't exist on IVB/HSW/BDW.
It's kernel regression,i know kernel(drm-intel-nightly) good commit is git-51c49ea and kernel(drm-intel-nightly) bad commit is git-72faa6a. but i can't found detail branch.

Reproduced step:
---------------------------------------------------
1. xinit&
2.  ./synmark2 OglBatch0
Comment 1 Chris Wilson 2014-09-12 08:57:48 UTC 
As always start off with a dmesg and Xorg.0.log.
Comment 2 zhoujian 2014-09-15 08:58:34 UTC 
This issue doesn't exist on latest nightly branch(git-43df30)
Comment 3 Jari Tahvanainen 2016-11-03 12:40:22 UTC 
Closing verified+fixed.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.