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

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 Labels: regression Attachments: expert-matches-perf-test.zip 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.