Hi guys, Just one more data point: a colleague of mine tested our OSG app in linux last week and also found one of the cores (on his 8 core machine) utilising 100% cpu. After some investigation, this turned out to a call to schedyield on the thread in the gl driver. Posibly you are seeing something similar..
Cheers, Morne On Mon, Feb 2, 2009 at 8:25 AM, Adrian Egli OpenSceneGraph (3D) <[email protected]> wrote: > Greate news (or bad news) that means we have not a windows issue. what > happens when you switch to singelthreaded ? > > /adrian > > 2009/2/1 Simon Loic <[email protected]> >> >> 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 >> >> _______________________________________________ >> 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
