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System Contention Scope

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Ultimately a user-level thread (computer science) is mapped to a kernel-level one via a scheme called Process Contention Scope (PCS). The name is derived from the fact that the processes and threads are contending for a kernel process.

The Operating System decides which kernel-thread to run based on a scheme called System Contention Scope (SCS) since the threads are contending for the system/processor.

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