Liferay performance tuning

        Below are the high level steps to tune the liferay server :  

Step 1 : Adjust the server's thread pool and JDBC connection pool

1. Unfortunately, there's no magic number for this: it must be tuned based on usage. 
2. By default, Liferay is configured for a maximum of 100 database connections. 
3. For Tomcat, a good number is between 200 and 400 threads in the thread pool