> -------------------------------- > > When I run any OpenGL game like say , RTCW or Q3 or > even something with Wine (like JD2) I get rather poor > performance. > > While playing any of the OGL games the frame rates > aren't stable, approximtly once a second the game > pauses for a small amount of time and then resumes... > Even if I were to stay in the same place (i.e. not > cause the game to texture swap by looking at a wall for > example) the frame rate still drops to 0 every second > (the game pauses the FPS counter drops and then counts > back up). > > This happens in any opengl prog that i've tried, it > looks like the driver is doing something at one second > intervals that causes the software to wait. > > Now, the intesting part. I normally run overclocked > (this bug report was produced for NON-OVERCLOCKED > runs)... at 121MHZ FSB (with PCI divider of 3), my > computer is very stable like that, I have multi-month > uptimes with high load, however, the behaviour of this > problems differs with bus speed. If I run the BUS at > 100mhz (i.e. giving PCI normal 33mhz speed) this > problem is a bit less noticebale because the "pause" > appears to be shorter (however still present and still > very noticeable). The higher the BUS speed becomes > (for example 121mhz FSB with a PCI speed of 40mhz) the > more noticeable the pauses are and more jerky the game > feels. > > There were no such problems with the normal XF 4.2.0 > release and an MGAG450... (at any bus speed) > > If any one is interested in more feedback or has > questions of any kind I will be glad to help to the > best of my ability (my email [EMAIL PROTECTED]).
This is a known problem which seems to occur when the host gets sufficiently far ahead of the card to run out of dma buffers. This is particularly possible when you have fast hw with a slow card. It's on my todo list to look at this, but I haven't had time so far. Keith _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas - http://devcon.sprintpcs.com/adp/index.cfm?source=osdntextlink _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
