Patent ID: 8103479

Claim:
A method of estimating the slope and y-intercept of a line representing response time versus I/O size for a data storage device, the method comprising the steps of: a) initializing values for an average response time and average I/O size for said data storage device; b) initializing an angle value; c) receiving at a processor a size measurement and response time measurement for an I/O directed to said data storage device; d) adjusting by said processor the average I/O size using a current value for the I/O size and the received I/O size measurement; e) adjusting by said processor the average response time using a current value for the average response time and the received response time measurement; f) adjusting by said processor the angle value using the adjusted average I/O size, the adjusted average response time, the current angle value, the received I/O size measurement, and the received response time measurement; g) reporting by said processor a next slope using the adjusted angle value; and h) reporting by said processor a next y-intercept using the next slope, the adjusted average I/O size, and the adjusted average response time.