Hello
I was asked to quantify how many CPU cycles are required for scheduling. I'm going to do an initial development for a series of devices. Could someone guide me to a place where I can find the number of CPU cycles to do the following:
- Preempt low priority thread and schedule high priority thread.
- Schedule from thread to thread on same priority. E.g. first thread blocked on a semaphore.
- Schedule from inactivated (e.g. blocking on a semaphore) high priority thread to low priority pending thread.
- Number of cycles from interrupt becoming active until first instruction of the user interrupt handler.
- Schedule from end of interrupt back to the thread preempted by this interrupt.
- Schedule from end of interrupt to a task higher than the thread that the interrupt has preempted.
- For how many CPU cycles get interrupts disabled while scheduling?
I expect the applications will run under the following:
- Cortex-M0+/M4/M7 depending on the enabled features.
- A typical configuration for an application with 16-64 tasks and 8 priority levels
- How much adds an FPU?
- How much adds an MMU/MPU?
Thanks very much