[Bug 65396] [IVB] FBC increases power for libva video workload

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65396

ZhaoShengyan <shengyanx.zhao at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |REOPENED

--- Comment #10 from ZhaoShengyan <shengyanx.zhao at intel.com> ---
We followed Rodrigo Vivi's comment and tried kernel branch fbc_fixes with
newest commit 68ba047bf19fbdcc22743069da259dc60f56a659, and the detail is as
follows:

Env:
Arch:           x86_64
Libdrm:         (master)libdrm-2.4.49
Mesa:           (master)ddc77c5092b6f782327a7014b320f31f5f4e8e93
Xf86_video_intel:              
(master)2.99.906-47-g5580df729f4d3b2498a6dae19dac938f06bf602d
Libva:          (staging)9aa8530ce272dc844428b7273afe7d4f0aaf391d
Libva_intel_driver:            
(staging)34627c96f331f7a344270c3d51b634f5f166073e
Gstreamer10:            (1.0)4e880d4d1e151ea64f83c28b5c3e1bbc06c57903
Gst_plugins_base10:             (1.0)2dd3f028c1e6dea799d7496639f53220818b20b1
Gst_plugins_good10:             (1.0)643d425f51f81b56deec16c01162637546708ee5
Gst_plugins_bad10:              (1.0)0587ab41b4f9979e9cfc11011ed5c970569ee3d3
Gst_plugins_ugly10:             (1.0)c7c911b8320576429e4a4234a1e29ec7436e6814
Gst_plugins_vaapi10:           
(master)0e9fc92819352b708b55b77e360a0b1ee7e7b555



Test result:
----------------------------------------      
HSW-ult      FBC disable Average_watt       FBC enable Average_watt          
idle         10.7                           10.8 
browser      16.7                           16.8
video        17.3                           18.6
game         25.5                           25.1

IVB          FBC disable Average_watt       FBC enable Average_watt
idle         28.8                           28.7      
browser      34.7                           34.4
video        36.5                           36.3
game         39.4                           39.1     


We found the feature that we mentioned saved power, such as IVB all tests got
good data. HSW game also got great save result, however, HSW idle, browser,
video, all got regression.

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