Apache Digester (1.8 and 2.1) very slow with Jboss AS 7. Why ?

[bimalpreetsingh]

Hi,

We have an application running on JAVA 1.5 and JBOSS 4.2.3, using Apache Digester 1.8 (jar name commons-digester-1.8.jar).

As a corporate direction, we have to migrate this application to JAVA 7 and JBOSS AS 7.

When we tried on the new env, the portion of the code where Digester was used started to execute very slowly (response of DigesterLoader.createDigester() was around 2min, and then digester.parse() taking around 4 min) while normally, it takes 1-2 sec.

We tried to run that portion of code, independently as a standalone code using main() method with just the JAVA 7 in picture, it worked well under normal response time.

We tried the same using the newer version of digester (jar name commons-digester-2.1.jar), but the code portion behaved the same way with and without JBOSS AS 7 in picture.

So, we suspect some issue with diegester vs JBOSS 7.

As we are losing time, and reaching deadline, URGENT helo is needed.

PLEASE do not hesitate to ask for more details to resolve this case.

Regards.

[jaikiran]

Welcome to the forums!

bimalpreetsingh wrote:

As we are losing time, and reaching deadline, URGENT helo is needed.

These are volunteer driven community forums where people help out at their leisure. So asking for URGENT help usually won't receive any replies.

As for your question:

bimalpreetsingh wrote:

When we tried on the new env, the portion of the code where Digester was used started to execute very slowly (response of DigesterLoader.createDigester() was around 2min, and then digester.parse() taking around 4 min) while normally, it takes 1-2 sec.

How did you measure that timings?

[bimalpreetsingh]

.....normal 1-2 sec  vs few minutes....it was evident, and no tool reqd for such observation...

[jaikiran]

bimalpreetsingh wrote:

.....normal 1-2 sec  vs few minutes....it was evident, and no tool reqd for such observation...

Let me ask you in another way - How did you narrow it down to those 2 methods and how exactly did you see that it was 4 minutes and 2 minutes?

[bimalpreetsingh]

We executed the code in eclipse environment in debug mode.

We put the breakpoints at these code lines.

And by observation we came to know that execution is taking time at these points..

[jaikiran]

bimalpreetsingh wrote:

We executed the code in eclipse environment in debug mode.

We put the breakpoints at these code lines.

And by observation we came to know that execution is taking time at these points..

That's not the right way to test it http://stackoverflow.com/questions/2195720/why-does-java-code-slow-down-in-debugger

bimalpreetsingh wrote:

We put the breakpoints at these code lines.

What does the code look like?

You'll have to provide some/lot more details about your application, the exact version of AS7 and other such details for anyone to be able to help.

[bimalpreetsingh]

i have put the code in tar.. But i am not able to upload the tar file ..

Suggest me any help

[nickarls]

There is an "Use advanced editor" in the upper-right-hand-corner of the editor. Distill the deployment to a bare minimum that can reproduce the issue.

[bimalpreetsingh]

i am attaching the source code .

test.java is main() method class.

[nickarls]

Do you think you could also pack it as a war so that a e.g. a servlet call would trigger the parsing (and save us some time)? ;-)

[sfcoy]

This sounds a bit like some code is trying to access something on the internet, and failing.

Check your network connections (netstat) while your application is in a "hung" state.