Sharing a performance benchmark article written by Dzmitry Kazbiarovich on PHP runtimes.
Results of benchmark the difference between using the TEXT and using a large VARCHAR. The results surprised me a lot.
Here we compare Nginx vs Apache at handling burst workloads and explain why one of them appears to handle it much better than the other.
How to use iperf to benchmark your network.
A guide to various ways to benchmark your CPU.