公开(公告)号：US20170322616A1

公开(公告)日：2017-11-09

申请号：US15148031

申请日：2016-05-06

Applicant: MEDIATEK INC.

Inventor： Kuo-Su Hsiao ,  Yen-Lin Lee ,  Shih-Yen Chiu ,  Jia-Ming Chen ,  Mark Shane Peng ,  Ya-Ting Chang

IPC: G06F1/32

CPC classification number: G06F1/3287 ,  G06F1/206 ,  G06F1/3206 ,  G06F1/3228 ,  G06F1/324 ,  G06F1/3243 ,  G06F1/329 ,  G06F1/3293 ,  G06F1/3296 ,  Y02D10/122 ,  Y02D10/126 ,  Y02D10/152 ,  Y02D10/16 ,  Y02D10/171 ,  Y02D10/172 ,  Y02D10/24

Abstract: Methods and apparatus are provided for adaptive optimization of low-power strategies. In one novel aspect, the device monitors one or more thermal-performance parameters and determines a plurality of operation scenarios for a plurality of corresponding low-power policies. Based on corresponding operation scenarios, the device selects corresponding low-power policy. The device applies different low-power strategy for temperature control based on low-power policies. Different low-power policy is applied to different low-power techniques, such as the DVFS, the CPU hot-plug, and the task migration. In another novel aspect, the device obtains one or more user-defined policy for each corresponding low-power technique. The selection of each low-power policy is further based on its corresponding user-defined policy. In one embodiment, the user-defined DVFS policy includes power policy, performance policy, and DVFS-balanced policy. The user-defined CPU hot-plug policy includes conservative policy, aggressive policy, and hot-plug-balanced policy. The user-defined task-migration policy includes performance policy, and task-migration-balanced policy.