Hello,
it is necessary to add at least one timer for the uC/OSII to work, as it needs Tick for time switching and timing delay (at least).
Thus add the intelTimer with a period of 1 to 20ms.
You can add directly another one for profiling with something as 500us to 2ms.
In the NIOS BSP editor specify the timers used.
Best.
RB