If your site has low CPU utilization at maximum throughput, check whether the database is limiting performance.
Get a JVM thread dump and examine it to see if there are many threads waiting for a response from the database.
Check the CPU utilization and disk I/O utilization of your database server.
Check the network bandwidth between the Dynamo server and the database server.
For more information about improving database performance with Dynamo, see the Repository and Database Performance chapter.