UNIX coordinates the activities of the kerne I /O components by manipulating shared in-kemel data structures,whereas Windows NT uses object-oriented message passing between kemel I/O components.Discuss three pros and three cons of each approach.
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Three pros of the UNIX method: Very efficient,low overhead and low amount of data movement
Fast implementation- no coordination needed with other kemel components
Simple,so less chance of data loss
Three cons: No data protection,and more possible side-effects from changes so more difficult to debug
Difficult to implement new I/O methods: new data structures needed
rather than just new objects
Complicated kemnel I/O subsystem,full of data structures,access routines,and locking mechanisms