Hi, in my case when I am runing osgviewer on a ubuntu distribution with 4 cores I get 25% of cpu, which means that one of my cores is over used. One of my colleagues have exactly the same behavior. Thus I don't think this is windows related only.
On Sun, Feb 1, 2009 at 2:55 PM, Glenn Waldron <[email protected]> wrote: > Adrian, > > I have observed an intermittent problem on Windows in which osgviewer > starts up using a high CPU %, but then cycling through the threading > modes with 'm' makes the problem go away - even when you return to the > mode in which you started. I never did figure out why. > > Just a data point... > > > Glenn Waldron : Pelican Mapping : http://pelicanmapping.com : > +1.703.652.4791 > > > > On Sun, Feb 1, 2009 at 7:45 AM, 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 > -- Loïc Simon
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