[jboss-user] [Performance Tuning] New message: "Re: 5.1.0.GA considerably slower than 4.0.3RC2! Up to 200%"
Emil Nilimaa
do-not-reply at jboss.com
Mon Feb 15 02:54:09 EST 2010
User development,
A new message was posted in the thread "5.1.0.GA considerably slower than 4.0.3RC2! Up to 200%":
http://community.jboss.org/message/526254#526254
Author : Emil Nilimaa
Profile : http://community.jboss.org/people/Eminil
Message:
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To demonstrate this we simply added a test method at the top of one of our EJBs.
public void testJBossSpeed(org.apache.log4j.Logger log){
String s = "";
for(int i=0; i < 1000000; i++){
s += i;
if (s.length()> 1000){
s = "";
}
}
}
(We used System.currentTimeMillis() to fetch time before the method starts and when it stops to figure out the time it took to run).
JBoss 4.0.3RC2 = approx 2500ms
JBoss 5.1.0.GA = approx 3500ms
This is a fairly simple test though. When lots of code gets involved the slowness of 5.1.0 increases a lot to somewhere around 200-300%.
This is weird... it seems the whole VM is running slower? Is it some configuration issue we have messed up or forgot to turn on/off?
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