I’m running a multisite network on WordPress 3.6 with the W3 Super Cache plugin for performance. I’m on a virtual dedicated server, but the WordPress dashboard started loading so painfully slow, it was excruciating.
So I did a quick search and found this “handy” tip on WPMU. The author suggested that using zlib compression would speed up my load times x3. So I took the advice and pasted this snippet in the header of my theme:
<?php
ini_set(âzlib.output_compressionâ, âOnâ);
ini_set(âzlib.output_compression_levelâ, â1â²);
?>
Instead of “instantly seeing a huge performance improvement,” it screwed up something with the blogs.dir and now all uploads and media are broken links. I removed the above PHP snippet, but the links are still dead. I looked in .htaccess and wp-config and didn’t see anything input from zlib.
Can anyone help me find a solution to this problem?
Try clearing the W3 Super Cache files, you may be looking at an outdated cached copy. I am not familiar with that plugin, I use W3TC, but there should be some sort of “clear cache” option. Otherwise, deactivate it, and see what happens.
You could also try going to permalink settings, and saving them – that will rewrite your .htaccess file for you – unless your caching plugin is interfering.