Drools 6 large contention ------------------------- Key: DROOLS-485 URL: https://issues.jboss.org/browse/DROOLS-485 Project: Drools Issue Type: Bug Affects Versions: 6.0.0.Final Environment: JDK6, 4 physical CPU cores Reporter: Sergey Alaev Assignee: Mark Proctor Rules run almost sequentially, i.e. running in two threads results in doubling execution time. Profiler shows following contention points: Stack Trace Count Duration org.drools.core.phreak.SegmentUtilities.createSegmentMemory(LeftTupleSource, InternalWorkingMemory) 3,301 270,505,102,344 org.drools.core.phreak.SegmentUtilities.createChildSegments(InternalWorkingMemory, SegmentMemory, LeftTupleSinkPropagator) 2,997 232,087,570,565 org.drools.core.runtime.process.ProcessRuntimeFactory.getProcessRuntimeFactoryService() 121 2,922,590,350