Patent ID: 7437281

Claim:
A method for modeling and monitoring system performance, the method comprising: defining system metrics; measuring defined system metrics; storing the measured system metrics; identifying correlations between pairs of measured system metrics; modeling system performance based upon at least one pair of system metrics having an identified correlation between them, wherein modeling system performance comprises: modeling a primary pair of system metrics, the primary pair comprising a first metric and a second metric, as the first metric changing as a non-linear function of the second metric; modeling a secondary pair of system metrics, the secondary pair comprising a second metric and a third metric, as the third metric changing as a non-linear function of the second metric, the second metric of the secondary pair being the same as the second metric of the primary pair; and defining a relationship between the first metric and the third metric, such that a distance may be computed between the first metric and the third metric at a value of the second metric; determining the value of the second metric at which the distance between the first metric and the third metric is maximized; defining an optimal range around the determined value of the second metric; and determining that the measured value of the second metric does not fall within the optimal range and issuing an alarm.