[jboss-user] [jBPM] - More precise jBPM process execution measurement?

[Huy Tran]

Huy Tran [http://community.jboss.org/people/huytran] created the discussion

"More precise jBPM process execution measurement?"

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Hello everyone,

I'm working on a study on existing open-source process runtime frameworks (such as jBPM, Apache ODE, etc.) wrt to flexibility, scalability, performance, and so on. With regard to jBPM execution time, I tried several examples such as the ones shown in [1] and [2]. The initial experiment settings is to create a process having a fixed number of tasks (ranging from 100 to 1000), then invoke *startProcessInstanceByKey()* or *startProcessInstance()* surrounded by *System.nanoTime()* in order to measure the process's execution time. 

(1) long startTime = System.nanoTime();
(2) ProcessInstance instance = executionService.startProcessInstanceByKey("Sequence1000");
(3) double executionTime = (System.nanoTime() - startTime) * 1.0e-6;

The preliminary measurement results seem to be very promising (~20ms for 1000 empty sequential tasks). However, I'm wondering if this measure is precise because the invocation of *instance.isEnded()* right after line (2) returns *false* (i.e., the process has not finished yet). Could somebody please show me how to precisely measure the execution time of a jBPM process (without looking to the underlying database tables)? Is there any convenient mechanism like callback or thing like that?

I truly appreciate your helps.

Kind regards,
Huy

[1]  http://processdevelopments.blogspot.com/2008/04/awsome-jbpm-performance-numbers.html http://processdevelopments.blogspot.com/2008/04/awsome-jbpm-performance-numbers.html
[2]  http://www.jorambarrez.be/blog/2008/04/14/short-jbpm-performance-showdown http://www.jorambarrez.be/blog/2008/04/14/short-jbpm-performance-showdown
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