Invention Grant
- Patent Title: Managing processor power-performance states
- Patent Title (中): 管理处理器功耗状态
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Application No.: US12425189Application Date: 2009-04-16
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Publication No.: US08171319B2Publication Date: 2012-05-01
- Inventor: Soraya Ghiasi , Malcolm S. Ware , Karthick Rajamani , Freeman L. Rawson, III , Michael S. Floyd , Juan C. Rubio
- Applicant: Soraya Ghiasi , Malcolm S. Ware , Karthick Rajamani , Freeman L. Rawson, III , Michael S. Floyd , Juan C. Rubio
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Yudell Isidore Ng Russell PLLC
- Main IPC: G06F1/32
- IPC: G06F1/32

Abstract:
Disclosed are systems, methods, and computer program products for managing power states in processors of a data processing system. In one embodiment, the invention is directed to a data processing system having dynamically configurable power-performance states (“pstates”). The data processing system includes a processor configured to operate at multiple states of frequency and voltage. The data processing system also has a power manager module configured to monitor operation of the data processing system. The data processing system further includes a pstates table having a plurality of pstate definitions, wherein each pstate definition includes a voltage value, a frequency value, and at least one unique pointer that indicates a transition from a given pstate to a different pstate. The voltage value, frequency value, and unique pointer of a given pstate definition are configurable, during operation of the data processing system, by the power manager module in response to changes in the operating parameters of the data processing system.
Public/Granted literature
- US20100268968A1 MANAGING PROCESSOR POWER-PERFORMANCE STATES Public/Granted day:2010-10-21
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