CONSERVING POWER IN A COMPUTER SYSTEM
First Claim
1. A method for conserving power in a computer system, comprising:
- determining a high power saving state as an optimal power saving state if an activity level on a network is lower than a first activity value and idle periods are longer than a first set of reference values,determining a low power saving state as the optimal power saving state the activity level on the network is higher a second activity value and the idle periods are shorter than a second set of reference values, and transitioning the computer system to the optimal power saving state.
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Abstract
A power management unit (PMU) may determine an optimal power saving state using a break-even period of a power saving state and an expected idle duration based on a first policy. The PMU may determine the optimal power saving state using a first break even period and actual idle duration based on a second policy. The break-even period may equal a minimum time a computer system should remain in a power saving state to compensate for the power consumed by the system to enter and exit that power saving state. The expected idle time duration is determined as an average of idle duration and a recent sample of idle duration. The actual idle duration is the difference of a first and second time point that represents entry and exit points to and from the power saving state. The PMU may transition the system to the optimal power saving state.
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Citations
7 Claims
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1. A method for conserving power in a computer system, comprising:
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determining a high power saving state as an optimal power saving state if an activity level on a network is lower than a first activity value and idle periods are longer than a first set of reference values, determining a low power saving state as the optimal power saving state the activity level on the network is higher a second activity value and the idle periods are shorter than a second set of reference values, and transitioning the computer system to the optimal power saving state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification