[#6581] - Increased response time for jasper reports

Hi
We have been using jasper server for report generation for one of our client application. We have been doing a performance run over a year.
For the last one month we have been seeing a continuous degradation in response time from the jasper server.
Also the response from the jasper server seems to be cyclic in nature. refer screen shot
We have cleared our temp files and work folders and cleared JIAccessEvent Table as well. But still the response time is poor.
It would be nice if you could share any pointers which we can look in to.

Our tech Stack details below

App Server - Tomcat 5.0.1
Jasper server 5.0.0
jasper Database - mysql server

Thanks
Premkumar C