Apache Performance Tuning
This article will or should provide enough information in order to diagnose, troubleshoot, and resolve issues encountered regarding Apache performance on Debian based Linux machines. Usually the easiest fix is to simply beef the box up, but it’s not always the recommended solution. If after trying to tune Apache using mpm_prefork, switch to mpm_worker or mpm_event. Since you’re reading this because you most likely have performance issues, think about putting a service like Cloudflare in front of your website to take the bulk/lion’s share of the load off your front-end web servers. Cloudflare’s free plan is being utilized as well to