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At first view, the linear path through the table might seem inefficient. However, if the number of priority levels is kept low, the search is quite fast. In fact, there are several optimizations to streamline the search. For example, if using a 32-bit processor and you are satisfied with limiting the number of different priority levels to 64, the above code can be optimized as shown in Listing 6-2. In the listing below. In fact, some processors have built-in “Count Leading Zeros” instructions and thus, the code can even be written with just a few lines of assembly language instead of C. Remember that with µC/OS-III, 64 priority levels does not mean that the user is limited to 64 tasks since with µC/OS-III, any number of tasks are possible at a given priority level (except 0 and OS_CFG_PRIO_MAX-1).