symmetric multiprocessors In which each processor runs an identical copy of the operating system - all processors are peers - no master slave relation exists between processors asymmetric multiprocessors ( master slave model) - In which each processor is assigned a specific task - this scheme defines a master slave relationship Real time Systems ===== ======== - It is special purpose operating system - It is used when rigid time requirements have been placed on the operation of a processor or the flow of data - real time system has well defined, fixed time constraints, processing must be done within the defined constraints else the system fails they can be classified as Soft and Hard ----------------------------------------- HARD ===== Guarantees that critical tasks be completed on time delay in system must be bounded secondary storage of any kind is minimal(limited) or missing most advanced feature of OS will not be supported(ex: virtual memory) None of the existing General purpose ...
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