What are the desirable features of good process migration mechanism?
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Process Migration is the ability of a system (user-space program or operating system) to transfer processes amid different nodes in a network. The purpose of process migration are to improve availability, balance load, ease system administration, and enhance the performance of communication.
EXPLANATION:
The desirable process of a good process migration mechanism are:
- Transparency, that is, Object access level transparency to support non pre-emptive process migration, and System call and inter-process communication-level transparency to support pre-emptive process migration facility
- Migration of a process must produce minimal interference (minimal residual dependencies) to the involved process’ progress and to the entire system, as well
- A migrated process must not keep depending on its previous node once it has begun executing on the new node
- Inefficiencies relating to time needed to migrate a process, and the cost of finding an object and the code supporting remote execution when the process is migrated, must be avoided
- The node’s failure other than the one on which a process is presently running must not impact the execution or accessibility of that process
- Co-processes must have the ability to directly communicate with each other regardless of their locations
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