Performance measurement model in the G-PM tool

This paper focuses on the model of the performance analysis of distributed grid-enabled applications within the G-PM tool. The major focus is at the issues that arises as a consequence of the on-line application monitoring paradigm the G-PM follows. In particular, two major issues are presented - the consequences of a discrete nature of measuring the function based performance quantities, and the aggregation of performance values that were measured at distant locations, and thus may be desynchronized.