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Enhanced control of CPU parking and thread rescheduling for maximizing the benefits of low-power state
Enhanced control of CPU parking and thread rescheduling for maximizing the benefits of low-power state
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机译:增强了对CPU驻留和线程重新调度的控制,以最大程度地发挥低功耗状态的优势
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摘要
A system may comprise a plurality of processing units and a scheduler configured to maintain a record for each respective processing unit. Each respective record may comprise entries which may indicate 1) how long the respective processing unit has been residing in an idle state, 2) a present power-state in which the respective processing unit resides, and 3) whether the respective processing unit is a designated default (bootstrap) processing unit. The scheduler may select one or more of the plurality of processing units according to their respective records, and assign impending instructions to be executed on the selected one or more processing units. Where additional processing units are required, the scheduler may also insert an instruction to trigger an inter-processor interrupt to transition one or more processing units out of idle-state. The scheduler may then assign some impending instructions to these one or more processing units.
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