Hello all,
I've been suggested by my hosting to move from w3-total-cache to wp-super-cache since the later is supposed to be using less memory then the first.
Is there any knowledge about this comparison?
Is there a way to test it on my own site? (I am on a managed VPS)
Thanks.
Use Google to find out about testing PHP for memory consumption as there are a few ways to do it, unfortunately none really conclusive IMO.
if W3 is giving you problems then just uninstall it and give Supercache a whirl. It's free after all so all it will cost you is your time (and make sure W3 uninstalls correctly before installing the new plugin as they share some configuration/files.
It's possible to hit memory limits with any caching plugin. Until version 1.0 there structure of W3TC will have a larger memory heap than caching plugins with less features depending on your settings. There's nearly no way around this in general because W3TC simply has more to offer; nonetheless some steps will be taken to make it more friendly for conservative hosting environments.