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Chapter 4
is dedicated to it. When multiple processes require the same resource, such as CPU, the
operating systems determine their access order; this is called scheduling. Commonly
adopted scheduling schemes include round-robin, priority
, and fi rst-in–fi rst-out.
4.2.1 Dynamic Power Management
Dynamically determining power states according to workloads is called dynamic power
management (DPM). DPM reduces power consumption by dynamically adjusting
performance levels to the workload. A general system can be seen as a collection of
interacting resources. If workload is non-stationary, some (or many) resources may be
idle ...