We operate with our own VPS node and run OpenVZ with SolusVM.
I have created VPS and install Virtualmin/Webmin on it. I have used Virtualmin repositories ( http://software.virtualmin.com/bleed/centos/5/i386/virtualmin-bleed-rele... ) and epel repositories (http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarc...) so i can run php 5.2.17 and phpmyadmin last version.
I have not done anything other inordinate with installation and configuration the VPS and i have follow the tutorial on Virtualmin wiki. I use Centos 5 x86 image that i have downloaded from openvz.
But even i have reinstall and reconfigure my VPS 2-3 times i have problem when there are 50+ visitors online the website load from super fast is starting to load extremely slow! The VPS and the node load are low. The VPS load is less then 0.7 and the node load not more than 1.5. There are plenty of RAM and free network connection ( from 100mbps i use only 4-5 MAX ). My Node specification is i7 980X with 24GB of ram. I have notice the same problem on 2 different VPS i crate and install/configure with Virtualmin/Webmin. And both VPS are running different websites ( one is joomla and the second is wordpress ). Does anyone have any idea what can be the problem? Why even the VPS load is very low the websites are loading very, very slowly.
I accept any help!