Bug 21556

Summary: [945] X11 performance degrade on xf86-video-intel master branch,compared with 2.7 branch
Product: xorg Reporter: liuhaien <haien.liu>
Component: Driver/intelAssignee: Carl Worth <cworth>
Status: VERIFIED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium Keywords: regression
Version: unspecified   
Hardware: Other   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
xorg.0.log
none
xorg conf file none

Description liuhaien 2009-05-05 00:13:14 UTC 
System Environment:
--------------------------
Host:		x-945gm
Arch:		i386
Platform:		945GM
OSD:		Fedora release 9 (Sulphur)
Kernel_version:		2.6.30-rc4-KMS
Libdrm:		(master)68103b2758029b3c1fbfcf995baa758bfd2676de
Mesa:		(master)986d4a9ec60ee52067b2d6f81c05f8ec3b8dc8b1
Xserver:		(master)7d85169c7ab1d05c21fdbb2877ffd79f344dbb6b
Xf86_video_intel:		(master)8255cca2c9092f7ecb798944aa8f03fa3efcfa6c
Kernel:       (drm-intel-next)091438dd5668396328a3419abcbc6591159eb8d1

Bug detailed description:
-------------------------
the performance of "x11perf -aa10text" degrades when switch to master from 2.7 branch. On 2.7 branch, the performance is 801000/sec, when switch to master branch, it is 557000/sec, decrease by about 244000/sec. 
Reproduce steps:
----------------
1.xinit&(with master branch)
2. x11perf -aa10text
Comment 1 liuhaien 2009-05-05 00:18:11 UTC 
Created attachment 25451 [details]
xorg.0.log
Comment 2 liuhaien 2009-05-05 00:18:30 UTC 
Created attachment 25452 [details]
xorg conf file
Comment 3 zhao jian 2009-05-08 07:03:01 UTC 
It now return back to 865k now with the following configuration:
xf86-video-intel: (master)        8d27247829fe4f55691ce68f9f4b14810fb34b32
mesa:         (master)        51325f44d1e7e62b47795a79f8038d10dc5bc30b
kernel:        (for-linus)     79f11c19a396e8cea7dad322dcfb46c0a8517fe6
libdrm:        (master)        68103b2758029b3c1fbfcf995baa758bfd2676de
xserver:       (master)        1b1b20d6e3e696e4437a9ef56128cde70a485f66

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