Scheduler for amp architecture with closed loop performance and thermal controller

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11579934
APP PUB NO 20210318909A1
SERIAL NO

17208928

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Abstract

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Systems and methods are disclosed for scheduling threads on a processor that has at least two different core types, such as an asymmetric multiprocessing system. Each core type can run at a plurality of selectable voltage and frequency scaling (DVFS) states. Threads from a plurality of processes can be grouped into thread groups. Execution metrics are accumulated for threads of a thread group and fed into a plurality of tunable controllers for the thread group. A closed loop performance control (CLPC) system determines a control effort for the thread group and maps the control effort to a recommended core type and DVFS state. A closed loop thermal and power management system can limit the control effort determined by the CLPC for a thread group, and limit the power, core type, and DVFS states for the system. Deferred interrupts can be used to increase performance.

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Patent Owner(s)

Patent OwnerAddress
APPLE INCCUPERTINO CA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Andrus, Jeremy C Sunnyvale, US 34 1476
Blaine, Russell A San Carlos, US 30 394
Chimene, Daniel A San Francisco, US 27 196
de, la Cropte de Chanterac Cyril San Francisco, US 50 338
Dorofeev, Andrei San Jose, US 18 124
Dorsey, John G San Francisco, US 35 632
Gamble, Nigel R San Francisco, US 6 32
Hinch, Bryan R Mountain View, US 21 64
Ismail, James S Sunnyvale, US 20 125
Magee, James M Orlando, US 22 267
Pistol, Constantin Cupertino, US 10 57
Venkataraman, Aditya Sunnyvale, US 13 55

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