Java enterprise application starts very slow on Linux PC with Sun JDK 1.6

Question

Our Java enterprise application(Spring, Hibernate, JSF, JBoss) usually starts for about 1 minute.
We run our application on Windows(SUN/Oracle JDK 1.6) and on AIX(IBM JDK 1.6).
I tried to run it on Linux(16GB, i5) using Sun JDK 1.6.
But by some reason application starts on Linux too long - from 5 to 30 minutes.
I connected to JVM by jvisualvm and tried to analize threaddumps - there are no any bad locks, sleeps, waits, etc.
I changed JDK to IBM JDK 1.6 and now application start for about 4-5 minutes. But it is too long also.
PC is not overloaded.
JBoss without my application starts fast.

What could be wrong?
How can I find what is wrong with my application or linux or PC?

UPDATE:
Server was restarted and this problem disappears.

You mentioned that you analyzed thread dumps. Did you also try profiling from jvisualvm to see what your application is doing in that time? — casablanca, Jul 04 '12 at 10:30
@Thorbjørn Ravn Andersen How DNS could influence on my application? — Volodymyr Bezuglyy, Jul 04 '12 at 10:39
maybe try to run the application in server/development mode (with key '-server' and without) to exclude if the jvm internal optimization is a bottleneck — Alexey A., Jul 04 '12 at 10:41
@casablanca Application loads Spring configuration, loads classes. Nothing suspicious. But too long. — Volodymyr Bezuglyy, Jul 04 '12 at 11:15
Does it connect to a database - is that database in the same network. Use jstack or kill -3 to generate a thread dump. Enable spring INFO log and check at where it is stopping. — gkamal, Jul 04 '12 at 12:31
@gkamal Yes - it uses database. Application do not stopping. It just working very slow. — Volodymyr Bezuglyy, Jul 04 '12 at 12:38
Any idea what part is working slow - if you take multiple thread dumps over a period of time (every 2-3 seconds) can you see if any of the threads are stuck in the same place (usually an IO). What is the heap memory setting (-Xmx, -Xms) can you try setting -Xmx same as -Xms — gkamal, Jul 04 '12 at 12:47
Do you see CPU load or I/O load on the machine while the app starts? Perhaps this machine has a slower disk or a poor disk driver (e.g. no good IDE/SATA driver and using compatibility PIO mode)? — Michał Kosmulski, Jul 04 '12 at 13:24
Use visualvm in the JDK to profile your application and find where the time is spent — Thorbjørn Ravn Andersen, Jul 04 '12 at 19:45

score 0 · Answer 1 · answered Jul 04 '12 at 12:26

0

I've already met simular situtation. Tomcat was began too late (about 3 minutes). I've found problem that OpenJDK is incompatible with powerpc (especially IO operations). So we've changed openJDK with IBMJDK. After that problem was gone. Check your processor type and find compatible jdk.

answered Jul 04 '12 at 12:26

rayyildiz

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I am using IBM JDK too. With this JDK application starts for about 4-7 minutes. It is too log. On slow PC with Windows this application starts for about 1 minute. – Volodymyr Bezuglyy Jul 04 '12 at 12:37
What is your operating system? Can you confirm for using IBM JDK? – rayyildiz Jul 04 '12 at 13:21
Can you add this JVM parameter –Djava.security.egd= file:/dev/./urandom and try again? Also you can look at http://stackoverflow.com/questions/137212/how-to-solve-performance-problem-with-java-securerandom for more information. – rayyildiz Jul 12 '12 at 13:50
I will try it. But there are no any problems with startup time of my application now. – Volodymyr Bezuglyy Jul 13 '12 at 07:41

Java enterprise application starts very slow on Linux PC with Sun JDK 1.6

1 Answers1