Fwd: x11perf move test performance

[Michel Dänzer]

On 24.12.2014 18:26, 李真能 wrote:
> 
> So recently I tested the performance between Radeon Mobility FireGL
> 9000(RV250) and Radeon HD 5450 with x11perf, the test command is :
> x11perf -repeat 3 -subs 2000 -time 3 move -sync -v1.2
> enrironment:
> os: rhel 7 x64, no desktop environment, only using xorg+x11perf to test
> hardware:
> CPU: intel pentium dual-core e5800, 3.2GHZ
> memory size: 3G
> After started Xorg with M9000 or HD 5450, radeon driver is used and
> acceleration is enabled, accelmethod is exa, resolution is 1920x1080.
> 
> test result are as follows(unit: /sec):
> 
>      "Move window"        "Move unmapped window"      "Move window via parent"
> M9000 	11300 			79200 			1110000
> HD5450 	7430 			70700 			2810000
> 
> M9000 is a more old card,HD 5450 is a newer product than M9000 about 10
> years.
> From the test result of "Move window", HD 5450 is lower than M9000, why?

One possible reason is that in contrast to the M9000, the HD5450 doesn't
have a dedicated 2D engine which can do overlapping blits. It has to
emulate those using two copies via a temporary pixmap.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer