Invention Grant
US08327176B2 Optimizing power management in multicore virtual machine platforms by dynamically variable delay before switching processor cores into a low power state
失效
在将处理器内核切换到低功耗状态之前，通过动态可变延迟优化多核虚拟机平台中的电源管理
- Patent Title: Optimizing power management in multicore virtual machine platforms by dynamically variable delay before switching processor cores into a low power state
- Patent Title (中): 在将处理器内核切换到低功耗状态之前，通过动态可变延迟优化多核虚拟机平台中的电源管理
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Application No.: US12751227Application Date: 2010-03-31
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Publication No.: US08327176B2Publication Date: 2012-12-04
- Inventor: Mathew Accapadi , Grover Cleveland Davidson, II , Dirk Michel , Bret Ronald Olszewski
- Applicant: Mathew Accapadi , Grover Cleveland Davidson, II , Dirk Michel , Bret Ronald Olszewski
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent J. B. Kraft; David A. Mims
- Main IPC: G06F1/32
- IPC: G06F1/32
Abstract:
Distributing a thread for running on a physical processor and enabling the physical processor to be switched into a low power snooze state when said running thread is IDLE. However, this switching into said low power state is enabled to be delayed by a delay time from an IDLE dispatch from said running thread; such delay is determined by tracking the rate of the number of said IDLE dispatches per processor clock interval and dynamically varying said delay time wherein the delay time is decreased when said rate of IDLE dispatches increases and the delay time is increased when said rate of IDLE dispatches decreases.
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