Using EMI signals to facilitate proactive fault monitoring in computer systems
AssigneeSun Microsystems, Inc.
InventorsKenny C. Gross, Aleksey M. Urmanov, Ramakrishna C. Dhanekula, Steven F. Zwinger
Life of this patent
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Abstract
A system that monitors electromagnetic interference (EMI) signals to facilitate proactive fault monitoring in a computer system is presented. During operation, the system receives EMI signals from one or more antennas located in close proximity to the computer system. The system then analyzes the received signals to proactively detect anomalies during operation of the computer system.
Claims13
A method for monitoring electromagnetic interference (EMI) signals to facilitate proactive fault monitoring in a computer system, comprising:
- receiving at an analysis mechanism EMI signals from one or more antennas located in close proximity to the computer system;
- using a Fast Fourier Transform (FFT) to convert the received signals to the frequency domain;
- converting the output of the FFT into time series frequency signals for different frequencies;
- determining correlations between the time series frequency signals and other system telemetry signals to identify time series frequency signals which are highly correlated with the other telemetry signals;
- constructing a model during a training phase by determining correlations between a set of signals, wherein the set of signals includes the identified time series frequency signals and the other telemetry signals;
- and
- comparing the time series frequency signals with corresponding estimated time series signals produced by the model to detect anomalies during a monitoring phase.
A computer-readable storage medium storing instructions that when executed by a computer cause the computer to perform a method for monitoring electromagnetic interference (EMI) signals to facilitate proactive fault monitoring in a computer system, the method comprising:
- receiving EMI signals from one or more antennas located in close proximity to the computer system;
- using a Fast Fourier Transform (FFT) to convert the received signals to the frequency domain;
- converting the output of the FFT into time series frequency signals for different frequencies;
- determining correlations between the time series frequency signals and other system telemetry signals to identify time series frequency signals which are highly correlated with the other telemetry signals;
- constructing a model during a training phase by determining correlations between a set of signals, wherein the set of signals includes the identified time series frequency signals and the other telemetry signals;
- and
- comparing the time series frequency signals with corresponding estimated time series signals produced by the model to detect anomalies during a monitoring phase.
An apparatus that monitors electromagnetic interference (EMI) signals to facilitate proactive fault monitoring in a computer system, comprising:
- one or more antennas located in close proximity to the computer system wherein the one or more antennas are configured to receive EMI signals from the computer system;
- and
- an analysis mechanism coupled to the one or more antennas, wherein the analysis mechanism is configured to
- use a Fast Fourier Transform (FFT) to convert the received signals to the frequency domain;
- convert the output of the FFT into time series frequency signals for different frequencies;
- determine correlations between the time series frequency signals and the other system telemetry signals to identify time series frequency signals which are highly correlated with the other telemetry signals;
- construct the model by determining correlations between a set of signals, wherein the set of signals includes the identified time series frequency signals and the other telemetry signals;
- and
- compare the time series frequency signals with corresponding estimated time series signals produced by the model to detect anomalies during a monitoring phase.
Dependencies are inferred from the claim text.