[jboss-jira] [JBoss JIRA] Created: (BPEL-311) Performance improvement: Find a way to reduce number of org.jbpm.bpel.graph.def.CompositeActivity.findVariable() calls

Wed Oct 14 08:31:05 EDT 2009

Performance improvement: Find a way to reduce number of org.jbpm.bpel.graph.def.CompositeActivity.findVariable() calls
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                 Key: BPEL-311
                 URL: https://jira.jboss.org/jira/browse/BPEL-311
             Project: jBPM BPEL
          Issue Type: Task
      Security Level: Public (Everyone can see)
          Components: Engine
    Affects Versions: jBPM BPEL 1.1.1
            Reporter: Aleksander Adamowski
            Assignee: Alejandro Guizar

According to our profiling data, during a single invocation of a relatively simple business process (cannot post it here for confidentiality reasons), jBPM-BPEL performs an unreasonable number of findVariable() calls.

Using JProfiler, we've recorded almost 150000 findVariable() calls for a single process execution (the process definition contains only 31 bpws:variable elements collectively).

I suspect that there's some algorithm which runs in exponential time with respect to the number of variables or activities. Maybe adding some form of variable caching could enable dramatic performance improvements?

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