I just made a simple self contained example to demonstrate the problem
better. It entirely depends on the two included files. This was run on
5.3.1.Final.
Results of test runs :
Setup with 10000 in 2524
LogicalInsertPerformance with 10000 in 17049
ManualInsertPerformance with 10000 in 17841
ModifyPerformance with 10000 in 9679
Setup with 20000 in 13156
LogicalInsertPerformance with 20000 in 84740
ManualInsertPerformance with 20000 in 100079
ModifyPerformance with 20000 in 25267
You can see how doubling the number of objects increases time by a factor of
4 in all but the modify example.
//
----------------------------------------------------------------------------------------
// START RULE FILE PerfTestRules.drl
//
----------------------------------------------------------------------------------------
package com.rules;
dialect "java"
declare SimpleDataPoint
value : int
id : int
alert : boolean // for modify and manualInsert tests
alertRule : String // for modify test only
end
declare SimpleAlert
datapoint : SimpleDataPoint
ruleName : String
end
rule "SetUp"
when
$amtData : Integer()
then
for (int x=0; x< $amtData.intValue(); x++) {
insert(new SimpleDataPoint(11, x, false, null));
}
end
rule "LogicalInsertPerformance"
when
$datapoint : SimpleDataPoint (
value > 0
)
then
insertLogical(new SimpleAlert($datapoint, drools.getRule().getName()));
end
rule "ManualInsertPerformance"
no-loop
when
$datapoint : SimpleDataPoint (
value > 0,
!alert
)
then
insert(new SimpleAlert($datapoint, drools.getRule().getName()));
modify($datapoint) {setAlert(true)};
end
rule "ModifyPerformance"
no-loop
when
$datapoint : SimpleDataPoint (
value > 0,
!alert
)
then
modify($datapoint) {setAlert(true),
setAlertRule(drools.getRule().getName())};
end
//
----------------------------------------------------------------------------------------
// JUNIT file SimplePerfTest.java used to setup and run tests.
//
----------------------------------------------------------------------------------------
package com.rules;
import org.drools.KnowledgeBase;
import org.drools.KnowledgeBaseConfiguration;
import org.drools.KnowledgeBaseFactory;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.conf.AssertBehaviorOption;
import org.drools.io.ResourceFactory;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.rule.Activation;
import org.drools.runtime.rule.AgendaFilter;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class SimplePerfTest {
private StatefulKnowledgeSession rulesSession = null;
java.util.ArrayList<String> allowList = new
java.util.ArrayList<String>();
@Before
public void setUp() {
// this will parse and compile in one step
final KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(
ResourceFactory.newClassPathResource("PerfTestRules.drl",
SimplePerfTest.class ),
ResourceType.DRL );
if ( kbuilder.hasErrors() ) {
throw new IllegalStateException(
kbuilder.getErrors().toString() );
}
allowList.add("SetUp");
// do not allow identical objects to be asserted separately
KnowledgeBaseConfiguration kbConf =
KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
kbConf.setOption(AssertBehaviorOption.EQUALITY);
KnowledgeBase knowledgeBase =
KnowledgeBaseFactory.newKnowledgeBase(kbConf);
knowledgeBase.addKnowledgePackages(kbuilder.getKnowledgePackages());
rulesSession = knowledgeBase.newStatefulKnowledgeSession();
}
/** clean up test environment
* @throws RuleManagerException */
@After
public void tearDown() {
allowList.clear();
if (rulesSession!=null) {
rulesSession.dispose();
}
rulesSession = null;
}
@Test public void testSetup10k() {
testPerf(10000);
}
@Test public void testLogicalInsert10k() {
allowList.add("LogicalInsertPerformance");
testPerf(10000);
}
@Test public void testManualInsert10k() {
allowList.add("ManualInsertPerformance");
testPerf(10000);
}
@Test public void testModify10k() {
allowList.add("ModifyPerformance");
testPerf(10000);
}
@Test public void testSetup20k() {
testPerf(20000);
}
@Test public void testLogicalInsert20k() {
allowList.add("LogicalInsertPerformance");
testPerf(20000);
}
@Test public void testManualInsert20k() {
allowList.add("ManualInsertPerformance");
testPerf(20000);
}
@Test public void testModify20k() {
allowList.add("ModifyPerformance");
testPerf(20000);
}
private void testPerf(final Integer AMT_DATA) {
rulesSession.insert(AMT_DATA);
long start = System.currentTimeMillis();
rulesSession.fireAllRules(new AgendaFilter() {
@Override
public boolean accept(Activation activation) {
return
allowList.contains(activation.getRule().getName());
}
});
System.out.println(allowList.get(allowList.size()-1) +" with
"+AMT_DATA+"
in " + (System.currentTimeMillis()-start));
}
}
--
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