I've searched Google and the forums until my eye balls bled and haven't found a solution to this issue.
My forum will randomly drop to a snails pace for a few hours, then go back to normal, then back to a snails pace.
I'm running on a VPS, server load is minimal, the CPU never gets above 10%, the ram is less than 50% used, and I've got plenty of free hard drive space.
Here's what happens when it slows down:
- Pages take around 10 seconds to appear, then load pretty quickly once they appear.
- Ajax calls for things like the Alerts menu can take forever to load, and sometimes don't even load. (Just shows the loading bar in the top right forever).
- Posting threads, replies and edits take 30 seconds or more to apply, then the page won't redirect. This is causing some members to double post since the website isn't responding like it should.
Pages outside of XenForo, even ones that use the MySQL databases, aren't experiencing the random slow down.
My site is here: