Hi Eric, W.r.t console printing, we've found that on windows, using std::cout/cerr is 20 times slower than printf. std::ofstream is on par with fprintf/printf however.
Cheers, /Marcus Quoting Eric Maslowski <[EMAIL PROTECTED]>: > 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 > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Opensg-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/opensg-users > > > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Opensg-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/opensg-users > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Opensg-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/opensg-users
