Description: As we have just seen, there are two basic ways of scheduling threads: process
local scheduling (known as Process Contention Scope, or Unbound Threads—the
Many-to-Many model) and system global scheduling (known as System Contention
Scope, or Bound Threads—the One-to-One model). These scheduling classes are
known as the scheduling contention scope, and are defined only in POSIX. Process
contention scope scheduling means that all of the scheduling mechanism for the
thread is local to the process—the threads library has full control over which
thread will be scheduled on an LWP. This also implies the use of either the Many-
to-One or Many-to-Many model.
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