Bug 83793 - [BYT Regression]3D performance reduced 10%~70%
Summary: [BYT Regression]3D performance reduced 10%~70%
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: All Linux (All)
: high major
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords: bisect_pending
Depends on:
Blocks:
 
Reported: 2014-09-12 08:46 UTC by zhoujian
Modified: 2016-11-03 12:40 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments

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.

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