A computer usable medium, tangibly embodying a program of instructions executable by the computer to perform a method, utilizing a single response time monitor located on a non-origin node of a public or private network, for measuring the total roundtrip response time of a set of requests resulting from an original request having embedded HTML frames, comprising:
- (a) utilizing the response time monitor on the non-origin node for building a relationship tree for the original request and its embedded HTML frames;
- and
- (b) for the original request and each additional request from the set of requests resulting from the original request, including requests for the embedded HTML frames, using the response time monitor to detect a start time and end time of each component of the request's roundtrip response time in order to calculate each said component's duration.