METHOD AND APPARATUS FOR CONTROLLING POWER IN LOW-POWER MULTI-CORE SYSTEM

WIPO Patent Application WO/2011/056007

A2

A method and apparatus for controlling power in a low-power multi-core system, including receiving task information from an Operation System (OS) kernel upon start and end of a task, estimating a future CPU usage using a current CPU usage in the task information, monitoring memory-related information in the task information, comparing a change in the current CPU usage with the monitored memory-related information, establishing a policy for power control based on the estimated CPU usage and the monitored memory-related information, and controlling on/off of multiple cores according to the established policy. By doing so, it is possible to solve the problems caused by performing DPM using only the CPU usage.

CHO IL-HYUN (KR)
JANG SUNG-JOON (KR)
KIM HYUN-MOO (KR)
HA NAM-SU (KR)
KIM JIN-HYO (KR)
KIM TAE-IL (KR)
PARK JI-HWAN (KR)
KIM HYE-SUN (KR)
DU JIN-KYOUNG (KR)

PCT/KR2010/007775

May 12, 2011

November 04, 2010

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SAMSUNG ELECTRONICS CO LTD (KR)
CHO IL-HYUN (KR)
JANG SUNG-JOON (KR)
KIM HYUN-MOO (KR)
HA NAM-SU (KR)
KIM JIN-HYO (KR)
KIM TAE-IL (KR)
PARK JI-HWAN (KR)
KIM HYE-SUN (KR)
DU JIN-KYOUNG (KR)

G06F9/50; G06F1/32; G06F11/34; G06F15/80

US20020188877A1	2002-12-12
US20090106571A1	2009-04-23
KR20100039140A	2010-04-15

TIANZHOU, C. ET AL.: 'Dynamic power management framework for multi-core porta ble embedded system' PROCEEDINGS OF THE 1ST INTERNATIONAL FORUM ON NEXT-GE NERATIONG MULTICORE/MANYCORE TECHNOLOGIES 2008, NEW YORK,

LEE, Keon-Joo (110-2 Myongryun-dong 4-ga,Chongro-gu, Seoul 110-524, KR)

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