Dear Visvanath,
Thank you very much for your reply.
>Take a monitoring tool which continuously track all the load parameters. Take a snapshot of everything during a load peak. You can also load the server artificially.<
I did made a performance testing with the script http://moodle.org/mod/forum/discuss.php?d=57028 before we started off on VPS, But I am not sure how far it is reliable. It informed me that I can manage 70 concurrent users with the setup I have. As regards, JMitter, I am not experienced to use it. If I get some tutorial I will try my hand next week, because perhaps we will be having a lull period on the server.
>http://www.parallels.com/eu/products/pvc46/ < I think Virtuozzo is their product.
Thank you very much,
Regards,
Nitin