Irrlicht Engine

rather late reply , sorry , but basically for non esential scene data , aka props (trees , barrels , other enviroment objects) to have 2500faces/mesh is a lot in any game , most games use trees arround probablly 100-200 polygons , and the leaves are no more then a couple of faces mapped with leaf textures and transparency .

Creating octrees on Linux is alittle messed and I didn't found out why. Profiling the code, the problem is in the delete area of the array.
Creating an octree on Windows with a gcc compiled test needs around 2 seconds, the same code, again with gcc and the same optimize-options needs around 20 seconds.