Patent ID: 8538740
Filing Date: 2013-09-17
Classification: G06F

Abstract:
1. In a performance modeling computer having a processor, a method for real time determination of a performance model of a transaction processing system that processes multi-class workloads, the method comprising: representing a multi-class workload processed by the transaction processing system, and represented by arrival rates, λ representing the performance model of the transaction processing system, by a state of the s transaction processing system that includes service time, s representing a measurement datum z that is at least one of gathered and sampled from the transaction processing system, by response times, R representing a measurement model that relates the performance model x to the measurement datum z at current time step k, by: wherein z representing a process of real-time determination of the performance model, by the process of estimation of state vector x at current time step k using measurement datum gathered at a past and a current time steps 0 to k via a modified extended Kalman filter, representing a time window by a continuous series of time steps prior to current time step k over which the measurement datum z has been gathered in the past time; for a set of measurement data received by the processor: wherein the set of constraints are augmented to the measurement model as measurements with zero noise covariance,