DYNAMIC POWER MEASUREMENT AND ESTIMATION TO IMPROVE MEMORY SUBSYSTEM POWER PERFORMANCE
First Claim
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1. A method comprising:
- monitoring a current draw from a memory device in response to the memory device receiving a known traffic pattern;
generating a power usage characterization for the memory device based on the monitored current draw for the known traffic pattern; and
adjusting a memory access performance parameter based on the power usage characterization.
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Abstract
Dynamic monitoring of current draw by a memory device or memory subsystem can enable a power management system to adjust a memory access performance parameter based on monitored power usage. The system can generate a power usage characterization for the memory device and/or memory subsystem based on monitoring current draw for a known pattern, and then subsequently use the power usage characterization to determine how to adjust the memory access performance parameter.
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Citations
19 Claims
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1. A method comprising:
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monitoring a current draw from a memory device in response to the memory device receiving a known traffic pattern; generating a power usage characterization for the memory device based on the monitored current draw for the known traffic pattern; and adjusting a memory access performance parameter based on the power usage characterization. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A power management system, comprising:
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a current sensor to measure current usage information for a memory device; and a power manager executed on a processor device that controls a memory controller that provides a memory access interface to the memory device, the power manager to receive the current usage information from the current sensor, determine to adjust a memory access parameter for the memory access interface of the memory controller, the determining based on the current usage information received from the current sensor and based on a power usage characterization for the memory device that indicates power usage for the memory device for a known traffic pattern, and adjust the memory access performance parameter based on the current usage information and the power usage characterization. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An electronic device comprising:
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a memory device to store data; a host hardware platform including a processor device that controls a power management system, and a memory controller device that provides a memory access interface to the memory device, wherein the power management system includes; a current sensor to measure current usage information for the memory device; and a power manager executed on the processor device, the power manager to receive the current usage information from the current sensor, determine to adjust a memory access parameter for the memory access interface of the memory controller, the determining based on the current usage information received from the current sensor and based on a power usage characterization for the memory device that indicates power usage for the memory device for a known traffic pattern, and adjust the memory access performance parameter based on the current usage information and the power usage characterization; and a touchscreen display coupled to generate a display based on data accessed from the memory device. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification