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9 Processors and Processor Sets

This section describes the Mach interface to processor sets and individual processors. The interface allows to group processors into sets and control the processors and processor sets.

A processor is not a central part of the interface. It is mostly of relevance as a part of a processor set. Threads are always assigned to processor sets, and all processors in a set are equally involved in executing all threads assigned to that set.

The processor set is represented by two ports, a name port processor_set_name used to query information about the host accessible to everyone, and a control port processor_set used to manipulate it.