Bug 54258

Summary: [bisected IVB]the performance of warsow demo undulate 20% on metacity
Product: Mesa Reporter: ye.tian <yex.tian>
Component: Drivers/DRI/i965Assignee: Ian Romanick <idr>
Status: CLOSED DUPLICATE QA Contact:
Severity: normal    
Priority: medium CC: mengmeng.meng, yex.tian
Version: git   
Hardware: All   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments: Xorg.0.log

Description ye.tian 2012-08-30 09:23:58 UTC 
System Environment:       
--------------------------
Platform: IVB
Mesa:    (master)67e9ae856355be532455c1cf1211d59b3a4c5992
Libdrm:  (master)libdrm-2.4.39-1
Xserver: (master)xorg-server-1.12.99.905-11
Xf86_video_intel:  (master)2.20.5-23-gdeaa1cac269be03f4ec44092f70349ff466d59de
Kernel:   (drm-intel-next-queued)faa66932bd63fd19052d50f73

Bug detailed description:
-----------------------------
The performance of warsow demo with same mesa driver undulate 20% on IVB.
I test the demo by 10 times,the highest 65,the lowest is 47.
It's Mesa regression.
By bisectd,show that the first bad commit is 9ef710575b914.

commit 9ef710575b914ddfc8e9a162d98ad554c1c217f7
Author: Kenneth Graunke <kenneth@whitecape.org>
Date:   Sun Aug 26 12:11:50 2012 -0700

    i965: Reenable the fragment shader precompile.

Reproduce steps:
----------------------------
1. xinit&
2. metacity&
3,./warsow.x86_64  +logconsole pts-log +exec profiles/gfx_high.cfg 
+timedemo 1 +cl_checkForUpdate 0 +demo pts-demo +next "quit" +r_mode -1 
+vid_customwidth 1920 +vid_customheight 1080 +vid_restart
Comment 1 ye.tian 2012-08-30 09:25:18 UTC 
Created attachment 66322 [details]
Xorg.0.log
Comment 2 Ian Romanick 2012-08-30 17:11:12 UTC 

*** This bug has been marked as a duplicate of bug 54193 ***
Comment 3 ye.tian 2012-08-31 02:55:31 UTC 
It works well on commit 6928bea7ca1f2ed308d8255c6816f44467306255, so we verified it.

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