Hi Paul,
  Can you give a little more information about your tests, such as which
stats were outputted and to where (console, screen, etc.)? We've found that
heavy printing of stats to the console is very expensive and could make
those numbers biased. Could you do a quick comparison of OpenSG without
stats? 

E.

---
Eric Maslowski
Research Computer Specialist
University of Michigan 3D Lab

Autodesk 3D Studio Max Certified Trainer

email:  [EMAIL PROTECTED]
office: 734-615-9699
mobile: 734-730-9904


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Daniel
Wickeroth
Sent: Friday, March 09, 2007 12:38
To: [email protected]; Paul Benölken
Subject: [Opensg-users] OpenSG vs. OpenSceneGraph Performance Test

Hi,

I just did some tests on OpenSG and OpenSceneGraph to find out which
better suits my needs (Performance) So I wrote some little testing
programs, loaded a VRML or an OBJ file (OpenSceneGraph doesn't seem to
support VRML) and measured the framerates.

You can find the results here:
http://www.uni-koblenz.de/~schmecko/Seite.htm

As a basic file I used the tie.wrl that comes with OpenSG. To create
larger scenes I simply multiplied the number of the tie-fighters in
the scene (up to 729= 9*9*9). Since OpenSceneGraph doesn't seem to
support VRML I converted the files into the .obj-format. I tested both
(wrl and obj) with OpenSG.

Some things were pretty strange.
First of all OpenSceneGraph was sometimes twice as fast as OpenSG
(tie243.wrl), which I did not expect. I tried to match the setups as
closely as possible given the short time I had. But even if there was
a slight advantage for OpenSceneGraph, the results seem odd to me.

Secondly, OpenSG 1.8 seems to be slower than OpenSG 1.6. But this I
cannot really say, because with OpenSG 1.6 I only built my code
myself, and used the precompiled binaries from the web. With OpenSG
1.8 I compiled everything myself, inlcuding the OpenSG libraries, with
the VS 8.0 compiler.

I would be glad to get some comments on the tests. Maybe some
improvements on the procedure? If you want I will gladly upload some
sceenshots and more info about the testing procedure.

Cheers,
Daniel



Daniel Wickeroth
Moltkestraße 88
50674 Köln

Home  0221 3569325
Work  0221 478 86504
Mobil 0176 700 40 252

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