What is process migration, Operating System

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Question:

(a) Describe blocking and non-blocking types of inter-process communication. What is easier to implement and why? Discuss their relative advantages and disadvantages.

(b) A spin lock is a boolean variable accessed via an atomic test-and-set instruction, which is used to obtain mutual exclusion. Would you use a spin lock to obtain mutual exclusion between threads on a single-processor computer?

(c) Explain what is meant by the load sharing components: transfer policy, selection policy, location policy, and information policy for dynamic load sharing.

(d) Caching is an important optimisation technique. Describe the three potential locations for caching in a distributed file system. Briefly discuss the advantages and disadvantages of each location.

(e) What is process migration? Why might you want to migrate a process?


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