[jboss-jira] [JBoss JIRA] (JBRULES-3459) Performance regression when using 'matches' operator, comparing with 5.3.

Fri Apr 13 08:28:48 EDT 2012

Petr Široký created JBRULES-3459:
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             Summary: Performance regression when using 'matches' operator, comparing with 5.3.
                 Key: JBRULES-3459
                 URL: https://issues.jboss.org/browse/JBRULES-3459
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: drools-core  (expert)
    Affects Versions: 5.4.0.CR1
            Reporter: Petr Široký
            Assignee: Mark Proctor

I am seeing performance regression when using rules with 'matches' and 'not matches' (comparing 5.4.0.CR1 and 5.3.0.Final). In my case the difference is up to 100 % (2000 ms vs 4000 ms). The DRL file contains 100 rules and in the test 500000 non-matching facts are inserted into knowledge session. See the attached standalone maven project.

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