Hi, I have just setup CloudLinux/LVE along with Litespeed, PHP 5.3.19, eAccelerator, memcache, and LS Cache. Have a few questions in preparation for growth and in interest of optimization. 1) How do I know when/if I need to upgrade to a 3-4 core license? 2) Is there any issue having all of these caching setups at the same time? -- Also, any suggested tuning to make them play nicest? 3) Tuning settings - Ive changed/checked these many times and overall they had minimal effect on test load times for a small wordpress site, or for my main application which will be small web pages and light PHP. I currently have: Keep-Alive timeout - 5 seconds Send/receive buffer untouched as pages will mostly be small ones IO Event Dispatcher - epoll Max Cached small file size - 4096b Total Small Cache Size - 128M Max MMAP File Size - 256K Total MMAP cache size - 128M Use sendfile - Yes Use AIO - Yes (Also tried keep mapped - any preference?) AIO Block Size - 1M No inode in etag - Not set Max URL Length: 2000 Max Request Header Size - 4096 Max Request Body Size - 500M/default Max Dynamic Response Header Size - 4096 Max Dynamic Response Body Size - 500M GZIP is yes/Yes, Dynamic content- level 4 Static content - level 6Max Static file size - 512K Cache settings: Max Object Size - 128K Cache enabled Yes With Query string - Yes Private cache Yes Everything else no I post my specific settings as the server is to be optimized for small static or small php pages where speed is the primary concern. On an older dual quadcore xeon with 8gb ram, two 15K SAS drives. Would like to place around 500 users per server. So far my testing has shown that CPU shouldnt be an issue, but memory perhaps will. I just want to check with everyone here to ensure my tuning is in tip top shape and that Im not missing out on anything. Thank you everyone.