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Generated January 22, 2018

CPU utilization measurement techniques for use in power management

Patent Number: 6,845,456

Patent Information

Abstract
A computer system that has multiple performance states periodically obtains utilization information for a plurality of tasks operating on the processor and determines processor utilization according to the utilization information for the plurality of tasks. The system compares the processor utilization to at least one threshold and selectively adjusts a current processor performance state to another performance state according to the comparison.
Patent Number: 6,845,456
Issue Date: 2005-01-18

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Citations

Patents cited by this patent

Patent Title
6,711,129 Real-time admission control
6,594,753 Method and apparatus for dual issue of program instructions to symmetric multifunctional execution units
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6,076,171 Information processing apparatus with CPU-load-based clock frequency
6,073,244 Power-saving clock control apparatus and method
6,014,611 Cooling mode switching system for CPU
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5,958,058 User-selectable power management interface with application threshold warnings
5,954,820 Portable computer with adaptive demand-driven power management
5,925,133 Integrated processor system adapted for portable personal information devices
5,887,179 System power saving means and method
5,884,049 Increased processor performance comparable to a desktop computer from a docked portable computer
5,881,298 Portable computer with selectively operable cooling unit
5,873,000 System incorporating hot docking and undocking capabilities without requiring a standby or suspend mode by placing local arbiters of system and base into idle state
5,852,737 Method and apparatus for operating digital static CMOS components in a very low voltage mode during power-down

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