Very nice. And various helpful bug reports I see - ra is going to be busy :)
On 08/11/12 20:41, Teravus Ovares wrote:
Not sure if you saw, however this is some good stuff. http://opensimulator.org/mantis/view.php?id=6409 :) Regards Teravus On Wed, Nov 7, 2012 at 4:35 PM, Adams, Robert <[email protected] <mailto:[email protected]>> wrote: There has been an ongoing discussion on physical prim maximum size. Lani Global did some testing and published a graph of her results at http://opensimulator.org/wiki/User:LaniGlobal#PhysicalPrimMax_Size_Testing . Her testing showed that, for ODE, a max size of 32m resulted in a livable frame rate degradation.____ __ __ I performed the same tests with BulletSim and discovered that a single sphere (native physical shape) or a single torus (mesh/hull shape) did not reduce simulator frame rate no matter the size of the object.____ __ __ So, I created a single, standalone region with lumpy terrain and dropped different quantities of large shapes. The resulting frame rates were:____ __ __ Number Number____ SPHERE 1 4 8 16 32 TORUS[2] 1 4 8 32 64____ +-------------------- +--------------------____ 10 | 55 55 55 55 55 10 | 55 55 55 55 55____ S 20 | 55 55 55 55 55 S 20 | 55 55 55 26 13____ i 32 | 55 55 55 55 55 i 32 | 55 55 40 16____ z 64 | 55 55 55 49 49 z 64 | 55 50 20____ e 100| 55 54 49 47 [1] e 100| 40 15____ __ __ [1] My setup wasn’t large enough to hold 32 100m spheres.____ [2] The torus height is about one third of the width because I preferred the doughnut shape.____ __ __ A few pictures of the experiments (one region with walls):____ https://dl.dropbox.com/u/86260377/20121107_009.png ____ https://dl.dropbox.com/u/86260377/20121107_012.png ____ https://dl.dropbox.com/u/86260377/20121107_017.png ____ https://dl.dropbox.com/u/86260377/20121107_019.png ____ https://dl.dropbox.com/u/86260377/20121107_022.png ____ https://dl.dropbox.com/u/86260377/20121107_026.png ____ __ __ It looks like, for BulletSim, a physical object max size of 32m is acceptable and 64m would probably be OK. ____ The physics frame rate is a function of the number and size of large, physical prims. The above numbers are for multiple of the same object. The next tests should be on large sized linksets (for instance, two 5m cubes that are 32m apart and linked and physical).____ __ __ -- ra____ __ __ _______________________________________________ Opensim-dev mailing list [email protected] <mailto:[email protected]> https://lists.berlios.de/mailman/listinfo/opensim-dev _______________________________________________ Opensim-dev mailing list [email protected] https://lists.berlios.de/mailman/listinfo/opensim-dev
-- Justin Clark-Casey (justincc) OSVW Consulting http://justincc.org http://twitter.com/justincc _______________________________________________ Opensim-dev mailing list [email protected] https://lists.berlios.de/mailman/listinfo/opensim-dev
