Thursday, 22 August 2013

Unix Topic on Context switching

Context switching is the process of storing and restoring state of CPU such that multiple process can share a single CPU resource. The context switching is the essential feature of a multitasking operating system.

Scheduler will selects process from ready processes in memory and will allocate the CPU to that process.

Dispatcher module give control of the cpu to the process selected but the short term scheduler,this involves context switch,switching to user mode


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