Many folks out there believe OpenLiteSpeed (OLS) is only good for small VPS setups, but that’s not always the case. While it’s true that Enterprise LiteSpeed (ELS) gives you more control and power, OLS, when properly optimized, can hold its own , especially for those looking to save a little extra cash. With the right tweaks, OLS can offer impressive performance without the need for a big-budget ELS license.

Important Note:
For smaller servers or VPS setups, Enhance’s default configurations are more than sufficient, and no additional changes are needed. These settings are not recommended for small servers or VPS setups. They are best suited for larger servers with at least 250GB of RAM, 50+ CPUs, and ample I/O resources.

If you’re not interested in the details and are simply looking for the settings, here’s a quick configuration guide:

Server Configuration > General > Number of Workers = 16
Server Configuration > General > CPU Affinity = 1
Server Configuration > General > Memory I/O Buffer = 512M
Server Configuration > Tuning  > Max Connections = 100000
Server Configuration > Tuning  > Max SSL Connections = 100000
Server Configuration > Tuning  > Send Buffer Size (bytes) = 512K
Server Configuration > Tuning  > Receive Buffer Size (bytes) = 512K
Server Configuration > Tuning  > Total Small File Cache Size (bytes) = 512M
Server Configuration > Tuning  > Max MMAP File Size (bytes) = 64M
Server Configuration > Tuning  > Total MMAP Cache Size (bytes) = 512M
Server Configuration > Tuning  > Use Asynchronized disk I/O (AIO) = io_uring
Server Configuration > Tuning  > AIO Block Size = 512K
Server Configuration > External App > LiteSpeed SAPI App > Max Connections = 500
Server Configuration > External App > LiteSpeed SAPI App > Environment > PHP_LSAPI_CHILDREN=500
Server Configuration > External App > LiteSpeed SAPI App > Environment > LSAPI_AVOID_FORK=0

Simply apply these settings to get started right away.

For those who want to dive into the details, please read more on this blog post as we explain the reasoning behind each setting and how they can enhance performance for your OLS-powered Enhance server or any other control panel.

As always, test these changes in a staging environment first, as every server setup is different. What works for us might not necessarily work for you, and we can’t be responsible for any issues on your end.

Think one of the settings could be better, or did we get something wrong? Drop your thoughts in the comments and let me know how to improve.