When to enable or disable KeepAlive ?

Use KeepAlive = OFF

• If you have little RAM and KeepAlive = ON, Apache waits for multiple requests

Use KeepAlive = ON

• If you have little CPU power, as it reduces CPU load
• If you have pages with lots of images and other files (CSS, JS etc.) as it uses single TCP connection to transfer multiple files
• If your website have traffic throughout the day

To set KeepAlive , set config in conf / httpd.conf :
KeepAlive On
OR
KeepAlive Off