Process P1 and P2 have a producer-consumer relationship, communicating by the use of a set of shared buffers:P1 :repeatobtain an empty bufferFill itreturn a full bufferforeverP2:repeatobtain a full bufferempty itreturn an empty bufferforeverIncreasing the number of buffers is likely to do which of the following?1. Increase the rate at which requests are satisfied.2. Decrease the likelihood of deadlock.3. Increase the case of achieving a correct implementation.a)1 onlyb)2 onlyc)2 and 3 onlyd)1,2 and 3Correct answer is option 'A'. Can you explain this answer? - EduRev Computer Science Engineering (CSE) Question

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Process P1 and P2 have a producer-consumer relationship, communicating by the use of a set of shared buffers:
P₁ :
repeat
obtain an empty buffer
Fill it
return a full buffer
forever
P₂:
repeat
obtain a full buffer
empty it
return an empty buffer
forever
Increasing the number of buffers is likely to do which of the following?
1. Increase the rate at which requests are satisfied.
2. Decrease the likelihood of deadlock.
3. Increase the case of achieving a correct implementation.

a)
1 only
b)
2 only
c)
2 and 3 only
d)
1,2 and 3

Correct answer is option 'A'. Can you explain this answer?

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Process P1 and P2 have a producer-consumer relationship, communicating...

Given set of processes depicts a standard producer-consumer relationship. Increasing the number of buffers will help in providing more slots to P₁ to fill a buffer and more slots to P₂ to empty a buffer. Hence, increase the rate at which requests are satisfied.
This will not affect the likelihood of deadlock:

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Process P1 and P2 have a producer-consumer relationship, communicating...

Increasing the number of buffers is likely to increase the rate at which requests are satisfied.

- Explanation:
When P1 fills a buffer, it becomes available for P2 to empty. Similarly, when P2 empties a buffer, it becomes available for P1 to fill. By increasing the number of buffers, we are providing more available buffers for P1 and P2 to communicate. This means that P1 can continue filling new buffers while P2 is emptying the existing ones, and vice versa. This allows for concurrent execution of the producer and consumer processes, leading to a higher rate of requests being satisfied.

- Example:
Imagine there are only two buffers available. P1 fills one buffer and waits for P2 to empty it. However, P2 is busy emptying the other buffer and does not have the opportunity to empty the filled buffer. This leads to a delay in the communication between P1 and P2, resulting in a slower rate of requests being satisfied.

- Increasing the number of buffers:
By increasing the number of buffers, let's say to four, P1 can fill one buffer and continue filling the remaining three buffers while P2 empties the filled buffer. This ensures a continuous flow of communication between P1 and P2, enabling a higher rate of requests being satisfied.

- Other options:
Increasing the number of buffers does not directly affect the likelihood of deadlock or the ease of achieving a correct implementation. Deadlock occurs when two or more processes are waiting for each other to release resources, which is not directly related to the number of buffers. Similarly, achieving a correct implementation depends on the synchronization and coordination mechanisms implemented between P1 and P2, rather than the number of buffers.

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Process P1 and P2 have a producer-consumer relationship, communicating by the use of a set of shared buffers:P1 :repeatobtain an empty bufferFill itreturn a full bufferforeverP2:repeatobtain a full bufferempty itreturn an empty bufferforeverIncreasing the number of buffers is likely to do which of the following?1. Increase the rate at which requests are satisfied.2. Decrease the likelihood of deadlock.3. Increase the case of achieving a correct implementation.a)1 onlyb)2 onlyc)2 and 3 onlyd)1,2 and 3Correct answer is option 'A'. Can you explain this answer?

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