Troubleshooting

Top Performance Bottlenecks

by ,


We have by far the largest RPM repository with dynamic stable NGINX modules and VMODs for Varnish 4.1 and 6.0 LTS. If you want to install NGINX, Varnish, and lots of useful modules for them, this is your one-stop repository to get all performance-related software.
You have to maintain an active subscription in order to be able to use the repository!

Is your website slow? Here’s a list of things to check. Reason and solution format.

It’s slow because of your SSL

It happens primarily on low end VPS boxes where CPU can’t handle strong ciphers well. You don’t have to sacrifice performance for security, but you can make use of secure ciphers which are faster, excluding the slow ones:

In http section of nginx.conf, specify:


ssl_prefer_server_ciphers on;
ssl_ciphers EECDH+CHACHA20:EECDH+AES128:RSA+AES128:EECDH+AES256:RSA+AES256:EECDH+3DES:RSA+3DES:!MD5;

It’s slow because of PHP version is old

Every release of PHP scripting engine brings more features and speed. It is especially true for PHP 7, which is up two 2-3 times faster than the previous PHP releases.

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.