Petr Široký created JBRULES-3459: ------------------------------------ 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.jboss.org/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira