I know this is probably in the noise but I was profiling my code and noticed many calls per frame to clock_gettime(). I traced this back to OSG (I'm using OSG 2.9.12 but it is probably true for other version).
I counted about 245 calls to clock_gettime() per frame with each clock_gettime() call taking around 0.2 microseconds. This means that around 49 microseconds per frame are spent fetching the current time. In looking at the code, it looks like most (if not all) of the calls are from osg::Timer::tick() and used for debugging information which is only reported for various debugging notify levels, however, the timing calculation is reported no matter what the notify level is. Again, I know this might be in the noise, but for my project, I need to conserve every CPU cycle I can. Paul P. ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=39545#39545 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
