Mediatek Corporation

I-Cheng Cheng

Jia-Ming Chen

Jih-Ming Hsu

Yun-Ching Li

Chien-Yuan Lai

Pei-Yu Huang

Sheng-Ju Wei

Shun-Chieh Chang

Tai-Hua Lu

Shu-Hsuan Chou

Ming Hsien Lee

Power and performance of a multi-core system is managed dynamically by adjusting power table indices at runtime. Runtime statistics is measured, when an application is executed on a first core of a first type at a first operating point (OPP) in a first time period, and on a second core of a second core type at a second OPP in a second time period. A controller estimates, based on the runtime statistics, a first pair of indices associated with a first OPP for the first core and a second pair of indices associated with a second OPP for the second core. During runtime, the controller incorporates the first pair of indices and the second pair of indices into power table indices; and determines, from the power table indices, selected indices associated with a selected OPP of a core of a selected core type for executing the application.

Runtime power table index adjustment for performance and power management

A method and an apparatus for performing task-level cache management in an electronic device are provided. The method may be applied to a processing circuit of the electronic device, and may include: before a task of a plurality of tasks runs on a processor core, performing at least one checking operation on the task to generate at least one checking result, wherein the at least one checking result indicates whether the task is a risky task with risk of evicting cached data of an urgent task from a cache, and the cache is dedicated to a set of processor cores including the processor core; and according to the at least one checking result, determining whether to temporarily limit cache access permission of the processor core during a time period in which the task runs on the processor core, for preventing cache eviction of the cache due to the task.

Method and apparatus for performing task-level cache management in electronic device

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Hsinchu, Taiwan

I-Cheng Cheng