Question: In Spinlocks :
Answer:
Spinlocks do have an advantage, however, in that no context switch is required when a process must wait on a lock, and a context switch may take considerable time. Thus, when locks are expected to be held for short times, spinlocks are useful. They are often employed on multiprocessor systems where one thread can “spin” on one processor while another thread performs its critical section on another processor
MCQ: In Spinlocks :
Explanation:
Spinlocks do have an advantage, however, in that no context switch is required when a process must wait on a lock, and a context switch may take considerable time. Thus, when locks are expected to be held for short times, spinlocks are useful. They are often employed on multiprocessor systems where one thread can “spin” on one processor while another thread performs its critical section on another processor
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Related Questions
- 1. A semaphore S is an integer variable that, apart from initialization, is accessed only through two standard atomic operations:
- 2. where two or more processes are waiting indefinitely for an event that can be caused only by one of the waiting processes is called.
- 3. Indefinite blocking may occur if we remove processes from the list associated with a semaphore in ________ order.
- 4. indefinite blocking or starvation is problem related to ___
- 5. In Priority Inversion Which of following Stands TRUE:
- 6. The bounded buffer problem is also known as :
- 7. In bounded buffer problem Which of the following Assumption Stands TRUE: <ol> <li>I. We assume that the pool consists of n buffers, each capable of holding one item.</li> <li>II. The mutex semaphore provides mutual exclusion for accesses to the buffer pool and is initialized to the value 1.</li> <li>III. The mutex semaphore provides mutual exclusion for accesses to the buffer pool and is initialized to the value 0.</li> <li>IV. The empty and full semaphores count the number of empty and full buffers.The semaphore empty is initialized to the value n; the semaphore full is initialized to the value 0.</li> <li>V. The empty and full semaphores count the number of empty and full buffers.The semaphore empty is initialized to the value 0; the semaphore full is initialized to the value n.</li> </ol>
- 8. The readers–writers problem and its solutions have been generalized to provide reader–writer locks on some systems. When a process wishes only to read shared data, it requests the reader–writer lock in____
- 9. The readers–writers problem and its solutions have been generalized to provide reader–writer locks on some systems. A process wishing to modify the shared data must request the lock in____
- 10. Multiple processes are permitted to concurrently acquire a reader–writer lock in read mode, but only one process may acquire the lock for ___, as exclusive access is required for ____
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