Patent ID: 8681643

Claim:
A method of determining data latency in a network, the method comprising: a processor receiving a first data sample comprising application level data from a data stream received at a first network point; the processor receiving a second data sample comprising application level data from a data stream received at a second network point, the data streams in the first and second network points including common application level data and the first and second data samples including common application level data; the processor determining a correlation between common application level data in the first and second data samples; wherein the correlation is determined by one of: (a) applying a first standard deviation calculation to the first data sample, applying a second standard deviation calculation to the second data sample and identifying a minimum difference between the first and second standard deviation calculations; (b) maximizing a cross-correlation between two sequences of data points in the first and second data samples; and (c) determining sequences of data points in the first and second data samples having the highest number of matching data points in the respective samples; the processor determining a time difference between correlated common application level data in the first and second data samples received at the first and second network points, respectively.