Performance analysis of workflow instances

In workflow systems, time performance of workflow instances is key to business management and scheduling. Firstly, the concept of active transition was proposed and its performance equivalent model was analyzed under resources-limited circumstances. Then, the concept of active pattern was proposed and time performances of four basic active patterns were deduced. Finally, an example was given to demonstrate how to use above results to estimate time performance of workflow instances. The proposed method can be used to estimate time performance of workflow instances at any time point and build efficient performance analysis algorithm.