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Q. The Sun Ultra SPARC processor has numerous register sets that describe the actions of a context switch if the new context is previously loaded into one of the register sets. What else should happen if the new context is in memory rather than in a register set and all the register sets are in use?
Answer: The CPU current-register-set pointer is altered to point to the set containing the new context which takes very little time. If the perspective is in memory one of the contexts in a register set should be chosen and be moved to memory and the new context must be loaded from memory into the set. This process obtains a little more time than on systems with one set of registers depending on how a replacement victim is selected.
Explain multilevel feedback queue in detail A process can move among the various queues; aging can be executed this way Multilevel-feedback-queue scheduler explained b
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Question: (a) The following table (table 1.0) gives the length of the CPU burst time in milliseconds of processes P 1 to P 4 . Assume the processes arrived in the order P 1 ,
What is the main function of the memory-management unit? The runtime mapping from virtual to physical addresses is done by a hardware device known as a memory management unit (
Explain Rehashing to Handle Collision Rehashing: Re-hashing schemes make use of a second hashing operation while there is a collision. If there is an additional collision, we
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expalin about the design issues of network operating system
explain about design issues of network operating system
What are the various page replacement algorithms used for page replacement? FIFO page replacement Optimal page replacement LRU page replacement LRU approximat
Allocators can also be used to avoid problems with unsafe languages. C and C++ are pervasive, with huge amounts of existing code. They are also memory-unsafe languages, in that the
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