my application uses osgocean when I am experiencing this .... -Nick
On Mon, Mar 15, 2010 at 1:19 PM, Vincent Bourdier < [email protected]> wrote: > Hi, > > Just an idea... maybe the database pager thread priority is not set. > Set it to a low priority can help the viewer maintain a better frame rate > maybe... > > I'm also interested in this question. > > Regards, > Vincent. > > Le 15/03/2010 12:15, Trajce (Nick) Nikolov a écrit : > > I want to join to this thread with similar experience on Windows. I am > getting the same thing, where the frame rate goes to 2-3fps and then goes > higher to some real time. No idea where it comes from. > -Nick > > > On Mon, Mar 15, 2010 at 1:03 PM, Adrian Lindberg <[email protected]> wrote: > >> So I've been getting in to OSG, much thanks to the help here on the >> mailing list/forum. But I'm having some issues with performance which I >> can't seem to pinpoint. >> >> I use extensive PagedLOD, in a similar way osgTerrain does it (using >> quad-trees). For me performance is the king and quality is secondary, so I >> want to have a frame rate that is at least 30 fps at all times (given some >> minimum requirements). When all LODs are loaded I get constant 60 fps which >> is due to the screen synch and when moving around I tend to get 20-30 fps >> due to loading. However, it is not uncommon that the fps dips completely and >> falls to sub 1 fps for a short while (up to a few seconds) and then resumes >> the 20-30 fps target. >> >> What I've tried so far is to set the >> setMaximumNumOfObjectsToCompilePerFrame to a very low value (1) and set the >> thread priority for the DatabasePager to low. I'm using VBO:s for vertex >> data and am currently running OSX 10.6 with OSG 2.9.6. For me it's vital to >> get rid of these dip, I'd much rather display low res data then getting >> drops. >> >> Profiling for me through Xcode seems to put the DatabasePager out of order >> so I can't really pinpoint why I'm getting these drops. >> >> Any ideas or suggestions? >> >> Cheers, >> Adrian >> >> ------------------ >> Read this topic online here: >> http://forum.openscenegraph.org/viewtopic.php?p=25647#25647 >> >> >> >> >> >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> > > > _______________________________________________ > osg-users mailing > [email protected]http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >
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