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RTEMS 4.6.2 On-Line Library


MYBSP Timing Data Context Switch

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10.4: Context Switch

The RTEMS processor context switch time is 11 microseconds on the MYBSP benchmark platform when no floating point context is saved or restored. Additional execution time is required when a TASK_SWITCH user extension is configured. The use of the TASK_SWITCH extension is application dependent. Thus, its execution time is not considered part of the raw context switch time.

The ARM processor benchmarked does not have a floating point unit and consequently no FPU results are reported.

The following table summarizes the context switch times for the MYBSP benchmark platform:

No Floating Point Contexts 11
Floating Point Contexts
restore first FP task
NA
save initialized, restore initialized
NA
save idle, restore initialized
NA
save idle, restore idle
NA


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