I'm running a medium sized XF board (37k threads, 465k posts) on a VPS with 1280MB RAM. It's a standard LAMP server running cPanel minus Apache; I'm running Litespeed. I do have memcache installed but not activated with XF; I'd read on the boards that performance increase was negligible on a single server. I've had the server techs tweak mySQL and it helped for a little while but it's feeling sluggish again.
The biggest problem I'm seeing is database commits. Posting threads, replies, conversations, etc. intermittently hangs for quite a bit and sometimes triggers the dreaded Server did not respond in time error. RAM is only at ~70% utilization at any given time so I doubt it's a lack of memory problem. Page loads are generally pretty fast.
Within the next couple of months I'll be moving the board to a fully dedicated box but in the mean time it'd be nice if the site would hum along in the mean time. There are a couple of small Wordpress installs running on this server but they can be moved if certain tweaks wouldn't play well with WP.
What files do you guys need to see?
Thanks in advance,
I forgot to add I'm running Extended Search from XF too, if that tidbid helps.