Uncore frequency control device, uncore frequency control method, and uncore frequency control program

The Uncore frequency control device optimizes power reduction in low load areas by analyzing hardware metrics and adjusting Uncore frequency, addressing the limitations of existing methods in managing Web service applications and reducing power consumption while maintaining performance.

WO2025004124A1PCT designated stage expired Publication Date: 2025-01-02NT T INC
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Patent Information

Application Number
PCT/JP2023/023467
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-06-26
Publication Date
2025-01-02

AI Technical Summary

Technical Problem

Existing Uncore frequency control methods struggle to optimize power reduction in low load areas for Web service applications, leading to potential performance violations and increased power consumption, while also facing challenges in managing sudden load fluctuations and obtaining necessary performance metrics.

Method used

The Uncore frequency control device collects and analyzes hardware operation status data to classify metrics into groups based on load trends, using the Min-Max normalization method to determine optimal Uncore frequency settings, thereby reducing power consumption in low load areas and minimizing performance impact from frequent frequency changes.

Benefits of technology

This approach enhances power reduction effects in low load areas, reduces overhead from frequent frequency adjustments, and allows reliable performance monitoring without direct access to application performance metrics, ensuring efficient power management and performance compliance.

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Abstract

An Uncore frequency control device (1) comprises: a monitoring unit (110) that collects HW operation status data from a compute (2) for a prescribed period; an analysis unit that employs data counted up over time as metrics to be analyzed, categorizes the metrics into a metrics A group in which a metrics value progressively increases as a load amount applied to an application increases, a metrics B group in which the metrics value decreases at a timing when degradation in application performance occurs, or a metrics C group in which the metrics value converges at a timing when degradation in application performance occurs, and determines metrics to be monitored; and a frequency control unit (140) that sets the Uncore frequency to the minimum value when the metrics B and C are not below the normalized value of the metrics A.
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Citation Information

Patent Citations

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  • Hierarchical reinforcement learning algorithm for NFV server power management

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