Quote Originally Posted by raj1126 View Post
thanks for the help DXS
well, after editing the congig.php, the site is loading now but mem% of mysql is still more than 3......
Then values are incorrect. your cpu might be high due to it being a VPS,
Have you tried doing the following?

Code: 
cat /proc/cpuinfo
Seeing how many cores you have and the hosts CPU.

How many users does your site have?
Are you using a control panel?