Invention Grant
- Patent Title: Method and apparatus for controlling power in low-power multi-core system
- Patent Title (中): 低功耗多核系统功率控制方法及装置
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Application No.: US13508149Application Date: 2010-11-04
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Publication No.: US09256508B2Publication Date: 2016-02-09
- Inventor: Il-Hyun Cho , Sung-Joon Jang , Hyun-Moo Kim , Nam-Su Ha , Jin-Hyo Kim , Tae-Il Kim , Ji-Hwan Park , Hye-Sun Kim , Jin-Kyoung Du
- Applicant: Il-Hyun Cho , Sung-Joon Jang , Hyun-Moo Kim , Nam-Su Ha , Jin-Hyo Kim , Tae-Il Kim , Ji-Hwan Park , Hye-Sun Kim , Jin-Kyoung Du
- Applicant Address: KR Suwon-si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Agency: Jefferson IP Law, LLP
- Priority: KR10-2009-0106418 20091105
- International Application: PCT/KR2010/007775 WO 20101104
- International Announcement: WO2011/056007 WO 20110512
- Main IPC: G06F1/00
- IPC: G06F1/00 ; G06F1/26 ; G06F11/34 ; G06F1/32 ; G06F9/50

Abstract:
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.
Public/Granted literature
- US20120216054A1 METHOD AND APPARATUS FOR CONTROLLING POWER IN LOW-POWER MULTI-CORE SYSTEM Public/Granted day:2012-08-23
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