Electrical computers and digital processing systems: support – Computer power control – Power conservation
Reexamination Certificate
2008-01-14
2008-10-21
Connolly, Mark (Department: 2115)
Electrical computers and digital processing systems: support
Computer power control
Power conservation
C713S300000, C713S322000, C713S323000, C713S324000
Reexamination Certificate
active
07441135
ABSTRACT:
A system, method and computer program product for managing power consumption in a system comprising at least two computing devices. The at least two computing devices are organized as part of active computing device group or a ready computing device group, the ready computing devices configured into various modes of readiness including a standby mode, a hibernating mode, and a power-off mode. A control device receives obtained sensed parameters indicative of the processing load at the group of active computing devices and determines a “Readiness” index value representing a state of system readiness which is a function of a transition time parameter representing a time for moving one or more computing devices from the second group of ready computing devices to the first group of active devices in response to a service level violation. To achieve maximum power saving and yet meet various performance targets, the ready computing devices are dynamically allocated from amongst three states: standby, hibernating or power-off, based on the current readiness index value.
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Chan Hoi Y.
Kephart Jeffrey O.
Levine David W.
Connolly Mark
International Business Machines - Corporation
Kaufman, Esq. Stephen
Scully, Scott, Murphy & Presser. P.C.
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