Hello,expert I am a student from China. I am trying to porting a RTOS from x86 to ARM9 now. In my test phase, I find the basic performance values of my ported RTOS are too longer than the original RTOS's values(average 10 times). I am very puzzle, i think maybe the MMU's code has something inefficient. Can you give me some normal values(ARM920T 200MHz,MMU enabled) and advices?
The origin values My values CPU x86 400MHz ARM920T 200MHz threads switch in process 0.1 microsecond 2.92 threads switch between pro 0.72 11.24 interrupt delay 3.62 8.0 syscall delay 1.85 5.36
create thread 25.50 586.35 kill thread in pro 24.17 646.65 kill thread of other pro 24.03 578.30 Set priority 6.71 35.93