I’ve a VPS Debian server with a few domain on it, mostly wordpress that i manage. I wished to compare a few cache plugins, at least with the basic disk cache and i also wanted to see the effects of the the xcache and mysql cache onto the wordpress performance. I gathered medium data using “ab” (apache benchmark) and other tools.
Those are the results without any cache plugin:
- 1881ms with clean mysql and xcache
- 1708ms with clean xcache
- 1277ms with clean mysql
- 524ms average
- 362ms running ab
Benefits of xcache are around 325% and 471%.
You see that wordpress is quite embarassing, the website is a bit complicated and it has lots of plugins: it does like 123 queries to render the homepage.
Those are the data with W3 Total Cache installed and only Page Cache on disk enabled:
- 171ms with clean mysql and xcache
- between 3 and 11ms in the long time
Then i tested Quick Cache, renamed ZenCache and today, finally called CometCache. Its an easy one, just install and enabled with one button.
Then i tested WP Super Cache.
Basically the results are the same as W3TC: between 3ms and 11ms.
Personally i’ll stick with W3TC because it has more customization and also allow me to manage the HTTP headers settings.