Recently I got a VPS for ruling as a webserver, my problem is when I have around 200 visitor, I mean 200 visitor at the same time, my cpu usage get to 100% I studied alot to have best configuration for Apache , Mysql and helps from Cpanel Developers, and checked each line of my CMS for possible problems but still same problem.
My VPS has 16Core and I have 128MHz of each core = 2GHz
is it make a problem ? since i have just 128Mhz of each core ?
My Centos info:
CentOS release 5.5 (Final) 2.6.18-028stab070.14 x86_64
Thank you in advance for any kind of advices or a clue.