Hi Aktar, I have been working with dual core machines and paging for the past two years without deadlocks, and for the last thee months have been using a quad core machine without issue.
What OS are you using? Robert. On Nov 10, 2007 7:31 AM, Akhtar Shamim <[EMAIL PROTECTED]> wrote: > Dear All, > > Lately I had been seeing a very obscure problem with our OSG application. > > The application uses a very large Terra Vista paged terrain. I see the > following two phenomena: > > 1. With all our old computers (i.e. computers having a single core CPU, 1 GB > or less RAM and with graphics card < NVidia 6600) the application gives a > constant update rate of 60 Hz. No problem with any refresh rate issues. > > 2. However, when I try the same application on a high end machine (Dual Core > CPU or Quad Core CPU and with graphics card 7800 GT++) the performance is > very poor and quite unpredictable. I looked at the CPU usages and found that > the CPU usage is below 20 % for most of the CPUs. The application crawls at > less than 6-7 Hz. However, if I change the BIOS setting to use only one CPU > the application is back to normal and runs at constant 60 Hz. > > It seems to me that the database pager isnt working perfectly with multiple > CPUs and gets deadlocked. I am very confused with this situation. For our > deployment we have all new machines with dual and quad core CPUs and latest > graphics cards. > > I would be very happy to hear suggestion/advice on how to solve this > performance issue. To be honest I am quite stuck with the problem. I have > tried compiling our application with OSG 1.2 and OSG 2.0. The phenomenon is > the same. > > Best regards. > > _______________________________________________ > 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
