Hi Adrian, This sounds like it could be a barrier that Windows is implementing inefficiently, and locking up a core whilest sitting on a barrier. This could possibly be a issue with OpenThreads implementation under Windows, or even just the OpenGL driver issue.
Are you running the app when Areo is enabled? If so then disable Areo and run the app again and look at the stats. Robert. On Sun, Feb 1, 2009 at 12:45 PM, Adrian Egli OpenSceneGraph (3D) <[email protected]> wrote: > Hi Cory, > > I am working with Windows Vista dual core system. I get 50% CPU usage when i > am running osgviewer cow.osg if i start > osgviewer cow.osg --SingleThreaded i have no longer 50% CPU usage , now i > have about 0.5-3% CPU usage !!!!! > > i am very busy at the moment, but may tomorrow i will debug the OSG core, > may there is a bug inside or a thread running at max. > or robert has some idea,where i can start with debugging. may it's a windows > vista bug > > adrian > > > 2009/2/1 Robert Osfield <[email protected]> >> >> Hi Cory, >> >> I'll have to defer to others on the situation under Windows when doing >> remote desktop. My guess is that it's likely to be a driver issue. >> >> Robert. >> >> On Sat, Jan 31, 2009 at 3:27 PM, Cory Riddell <[email protected]> wrote: >> > I'm not sure about vysync. I'll look that up and check it. >> > >> > I thought about the possibility of it being a debug build and I don't >> > think >> > that's it. In my bin directory I have osgviewer.exe at 25,600 bytes and >> > osgviewerd.exe at 81,920 bytes. Both executables give me the same CPU >> > pegging behavior (as observed by SysInternals Process Explorer). >> > >> > My command line is "osgviewer.exe --window 100 100 200 200 cessna.osg". >> > My >> > video card is an ATI FireGL V7700 and the drivers are up to date. >> > >> > Ah- I just noticed something-- an error message: >> > Windows Error #127: [Screen #0] ChooseMatchingPixelFormat() - >> > wglChoosePixelFormatARB extension not found, trying GDI. Reason: The >> > specified procedure could not be found. >> > >> > I'm running over remote desktop right now, so perhaps that's related. I >> > don't recall seeing this error message before. >> > >> > Cory >> > >> > On Sat, Jan 31, 2009 at 3:54 AM, Robert Osfield >> > <[email protected]> >> > wrote: >> >> >> >> Hi Cory, >> >> >> >> It's not normal to have this high level of CPU usage for this model, >> >> the expceptions to this would be: >> >> >> >> You have vysync switched off, so the app is racing as fast it can >> >> to dispatch frames >> >> You've compiled the OSG with debug build. >> >> >> >> Robert. >> >> >> >> On Fri, Jan 30, 2009 at 8:36 PM, Cory Riddell <[email protected]> >> >> wrote: >> >> > When I run the osg viewer app and load just about any osg file (like >> >> > cesna.osg), my CPU usage is a constant 23% - 30%. This is with no >> >> > interaction, it is basically using an entire CPU core. Fortunatelly I >> >> > have a >> >> > 4 core machine, so it hasn't been a problem so far, but I'm wondering >> >> > what >> >> > this means for single core machines (which most of our customers >> >> > have). >> >> > >> >> > Is this typical? >> >> > >> >> > Cory >> >> > >> >> > _______________________________________________ >> >> > osg-users mailing list >> >> > [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 >> > >> > >> > _______________________________________________ >> > osg-users mailing list >> > [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 > > > > -- > ******************************************** > Adrian Egli > > _______________________________________________ > osg-users mailing list > [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
