Consider a multiprocessor system and a multithreaded program written using the many-to-many threading model. Let the number of user-level threads in the program be more than the number of processors in the system. Discuss the performance implications of the following scenarios.
a. The number of kernel threads allocated to the program is less than the number of processors.
b. The number of kernel threads allocated to the program is equal to the number of processors.
c. The number of kernel threads allocated to the program is greater than the number of processors but less than the number of user level threads.