Concurrent birt reports generation slow

ricofernan

I'm having a problem with concurrent birt reports generation in a JBoss environment. Sometimes, when more than a user generates reports at the same time (even when the report designs are different), reports take a very long time to complete. Reports that usually completes in less than 5 seconds lasts 2 minutes or more! Taking a dump of the threads currently running, I've noticed something strange:

org.eclipse.birt.report.engine.data.dte.ReportQueryBuilder.build(ReportQueryBuilder.java:256)
- locked <0x45a228> (a org.eclipse.birt.report.engine.ir.Report)
org.eclipse.birt.report.engine.data.dte.ReportQueryBuilder.build(ReportQueryBuilder.java:237)
- locked <0x45a228> (a org.eclipse.birt.report.engine.ir.Report)

could this be the cause of it? If yes, how can I deal with it?

thanks a lot!

vavesw

Just out of curiosity.
Are you sharing the same report engine instances?

We have the same requirement. We have started development and we are looking for design issues that might be caused due to this concurrent running of reports using the same engine instance.

Or are you creating a separate engine for each of the report instance