Since we have perform custom kernel upgrade start from February 2011, you may now view your site's resource usage in term of Memory, CPU and Concurrent User that used/access to your site from cPanel.
As a result, we have applied the following resource limit on our shared server.
-Concurrent Connections: 30
Below is the sample screenshot for cPanel X3 themes result.
To get the detailed resource usage, please use the step as below.
Basically, you may click on the icon named Resource Usage from Logs section and you may hit the [Details] link and you will be able to generate the resource quota from your site.