3:15 p.m.
Hi
I would like to test the time taken to run a single rule (eg.
HelloWorldExample from Drools5.0 documentation) against large data size (i.e
the object inserted in ksession is 10,000). The .drl file is loaded only
once and i am looping the part where message object is created and set with
values and inserted into ksession for 10,000 times. The time taken was 10.7
secs on an average. Am i doing something wrong? Can i improve it in anyway?
Your help is appreciated.
thanks
ABRA
HelloWorld.drl :
package org.drools.examples
import org.drools.examples.HelloWorldExample.Message;
global java.util.List list
rule "Hello World"
dialect "mvel"
when
m : Message( status == Message.HELLO, message : message)
then
System.out.println( message );
modify ( m ) { message = "Goodbye cruel world",
status = Message.GOODBYE };
end
rule "Good Bye"
dialect "java"
when
Message( status == Message.GOODBYE, message : message )
then
System.out.println( message );
end
HelloWorldExample.java
/**
* This is a sample file to launch a rule package from a rule source file.
*/
public class HelloWorldExample {
public static final void main(final String[] args) throws Exception {
final KnowledgeBuilder kbuilder = KnowledgeBuilderFactory
.newKnowledgeBuilder();
// this will parse and compile in one step
kbuilder.add(ResourceFactory.newClassPathResource("HelloWorld.drl",
HelloWorldExample.class), ResourceType.DRL);
// Check the builder for errors
if (kbuilder.hasErrors()) {
System.out.println(kbuilder.getErrors().toString());
throw new RuntimeException("Unable to compile
\"HelloWorld.drl\".");
}
// get the compiled packages (which are serializable)
final Collection<KnowledgePackage> pkgs = kbuilder
.getKnowledgePackages();
// add the packages to a knowledgebase (deploy the knowledge packages).
final KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(pkgs);
final StatefulKnowledgeSession ksession = kbase
.newStatefulKnowledgeSession();
ksession.setGlobal("list", new ArrayList());
ksession.addEventListener(new DebugAgendaEventListener());
ksession.addEventListener(new DebugWorkingMemoryEventListener());
// setup the audit logging
KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory
.newFileLogger(ksession, "log/helloworld");
long starttime = System.currentTimeMillis();
for(int u=0;u<10000;u++)
{
final Message message = new Message();
message.setMessage("Hello World");
message.setStatus(Message.HELLO);
ksession.insert(message);
ksession.fireAllRules();
}
long endtime = System.currentTimeMillis();
System.out.println("execution time is "+(endtime-starttime));
logger.close();
ksession.dispose();
}
public static class Message {
public static final int HELLO = 0;
public static final int GOODBYE = 1;
private String message;
private int status;
public Message() {
}
public String getMessage() {
return this.message;
}
public void setMessage(final String message) {
this.message = message;
}
public int getStatus() {
return this.status;
}
public void setStatus(final int status) {
this.status = status;
}
public static Message doSomething(Message message) {
return message;
}
public boolean isSomething(String msg, List list) {
list.add(this);
return this.message.equals(msg);
}
}
}
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3:26 p.m.
Have you tried removing the System.out.println statement from the rule? Writing to the
console can be very very slow.
You could also get rid of the audit logger which could be spitting out a lot of data into
a file (or it may not, I've not actually tried it).
Thomas
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-
bounces(a)lists.jboss.org] On Behalf Of ABRA2
Sent: 04 November 2009 14:15
To: rules-users(a)lists.jboss.org
Subject: [rules-users] Execution time for drools5.0 against large data
size
Hi
I would like to test the time taken to run a single rule (eg.
HelloWorldExample from Drools5.0 documentation) against large data size
(i.e
the object inserted in ksession is 10,000). The .drl file is loaded
only
once and i am looping the part where message object is created and set
with
values and inserted into ksession for 10,000 times. The time taken was
10.7
secs on an average. Am i doing something wrong? Can i improve it in
anyway?
Your help is appreciated.
thanks
ABRA
HelloWorld.drl :
package org.drools.examples
import org.drools.examples.HelloWorldExample.Message;
global java.util.List list
rule "Hello World"
dialect "mvel"
when
m : Message( status == Message.HELLO, message : message)
then
System.out.println( message );
modify ( m ) { message = "Goodbye cruel world",
status = Message.GOODBYE };
end
rule "Good Bye"
dialect "java"
when
Message( status == Message.GOODBYE, message : message )
then
System.out.println( message );
end
HelloWorldExample.java
/**
* This is a sample file to launch a rule package from a rule source
file.
*/
public class HelloWorldExample {
public static final void main(final String[] args) throws
Exception {
final KnowledgeBuilder kbuilder = KnowledgeBuilderFactory
.newKnowledgeBuilder();
// this will parse and compile in one step
kbuilder.add(ResourceFactory.newClassPathResource("HelloWorld.drl
",
HelloWorldExample.class), ResourceType.DRL);
// Check the builder for errors
if (kbuilder.hasErrors()) {
System.out.println(kbuilder.getErrors().toString());
throw new RuntimeException("Unable to compile
\"HelloWorld.drl\".");
}
// get the compiled packages (which are serializable)
final Collection<KnowledgePackage> pkgs = kbuilder
.getKnowledgePackages();
// add the packages to a knowledgebase (deploy the
knowledge packages).
final KnowledgeBase kbase =
KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(pkgs);
final StatefulKnowledgeSession ksession = kbase
.newStatefulKnowledgeSession();
ksession.setGlobal("list", new ArrayList());
ksession.addEventListener(new DebugAgendaEventListener());
ksession.addEventListener(new
DebugWorkingMemoryEventListener());
// setup the audit logging
KnowledgeRuntimeLogger logger =
KnowledgeRuntimeLoggerFactory
.newFileLogger(ksession, "log/helloworld");
long starttime = System.currentTimeMillis();
for(int u=0;u<10000;u++)
{
final Message message = new Message();
message.setMessage("Hello World");
message.setStatus(Message.HELLO);
ksession.insert(message);
ksession.fireAllRules();
}
long endtime = System.currentTimeMillis();
System.out.println("execution time is "+(endtime-
starttime));
logger.close();
ksession.dispose();
}
public static class Message {
public static final int HELLO = 0;
public static final int GOODBYE = 1;
private String message;
private int status;
public Message() {
}
public String getMessage() {
return this.message;
}
public void setMessage(final String message) {
this.message = message;
}
public int getStatus() {
return this.status;
}
public void setStatus(final int status) {
this.status = status;
}
public static Message doSomething(Message message) {
return message;
}
public boolean isSomething(String msg, List list) {
list.add(this);
return this.message.equals(msg);
}
}
}
--
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drools5.0-against-large-data-size-tp26195944p26195944.html
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6:42 p.m.
New subject: Execution time for drools5.0 against large data size
What happens if you move line "ksession.fireAllRules();" to after the loop?
5:27 a.m.
New subject: Execution time for drools5.0 against large data size
I have tried couple of things as suggested by the rules user list. It has
improved the execution time of hello world example to some extent.
1. Moving fireallRules() out of the loop - helped very little, execution
time was almost same(150 millisecs less). - 10.35 secs
2. Commenting out the audit logger used in the example - cut the execution
time by half 5.67 secs
3. Removing system.outs from rules - reduces 2 secs of execution time -
3.433
The final execution time for HelloWorldExample in drools5.0 is 3.4 secs and
in Java is 256 milli secs. (I am attaching the java version of drools
example also to this email) .
package org.drools.examples;
import java.util.List;
import org.drools.examples.HelloWorldExample.Message;
public class HelloWorldJavaExample {
public static long starttime = 0;
public static long endtime =0;
public static void hello(Message message)
{
System.out.println(message.getMessage());
message.setMessage("Good Bye Cruel World");
message.setStatus(Message.GOODBYE);
goodbye(message);
}
public static void goodbye(Message message)
{
System.out.println(message.getMessage());
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
starttime = System.currentTimeMillis();
for(int u=0;u<10000;u++)
{
final Message message = new Message();
message.setMessage("Hello World");
message.setStatus(Message.HELLO);
if(message.getMessage().equalsIgnoreCase("Hello World"))
{
hello(message);
}
}
endtime = System.currentTimeMillis();
System.out.println("execution time in main is "+(endtime-starttime));
}
public static class Message {
public static final int HELLO = 0;
public static final int GOODBYE = 1;
private String message;
private int status;
public Message() {
}
public String getMessage() {
return this.message;
}
public void setMessage(final String message) {
this.message = message;
}
public int getStatus() {
return this.status;
}
public void setStatus(final int status) {
this.status = status;
}
public static Message doSomething(Message message) {
return message;
}
public boolean isSomething(String msg, List list) {
list.add(this);
return this.message.equals(msg);
}
}
}
thanks for your suggestions.
ABRA2
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5291
days inactive
5292
days old
3 comments
3 participants
participants (3)
-
ABRA2 -
Jared Davis -
Swindells, Thomas