CPU Usage and FPS

EdwardT · 07-28-2002, 07:22 PM

If I set the FPS to 30fps I get about 30fps, however if I set FPS to 60fps, I still get about 30fps.

With only Marine Aquarium in a window 720 x 540 and the ProcessViewer running behind the Aquarium I can see the amount of CPU Usage.

With both settings of 30fps and 60fps the CPU usage is about 65-76%.

When I set the FPS to Maximum then I get about 41-45fps and a CPU of 100%

I was just wondering why I don't get a higher fps at the setting of 60fps.

I have a BW G3 400mHz with ATI Radeon 7000 video card, MacOSX 10.1.5 and Marine Aquarium v1.1.0

JimO'Connor · 07-28-2002, 09:46 PM

When you set the fps to Max we ask the OS to give us the CPU at EVERY opportunity, hence the 100% CPU utilitization. With anything less than Max the OS X scheduler has more flexibility.

07-28-2002, 07:22 PM	#1
EdwardT Registered Join Date: Jul 2002 Location: Los Angeles Posts: 21	CPU Usage and FPS If I set the FPS to 30fps I get about 30fps, however if I set FPS to 60fps, I still get about 30fps. With only Marine Aquarium in a window 720 x 540 and the ProcessViewer running behind the Aquarium I can see the amount of CPU Usage. With both settings of 30fps and 60fps the CPU usage is about 65-76%. When I set the FPS to Maximum then I get about 41-45fps and a CPU of 100% I was just wondering why I don't get a higher fps at the setting of 60fps. I have a BW G3 400mHz with ATI Radeon 7000 video card, MacOSX 10.1.5 and Marine Aquarium v1.1.0

07-28-2002, 09:46 PM	#2
JimO'Connor Mac Development Join Date: Jul 2002 Location: Kenai, Alaska Posts: 678	When you set the fps to Max we ask the OS to give us the CPU at EVERY opportunity, hence the 100% CPU utilitization. With anything less than Max the OS X scheduler has more flexibility. Jim O'Connor Order N Development