I have had many occasions in the past when my VPS RAM peaked out. Just a few hours ago I switched from ServInt VPS Plan to ServInt SolidFire SSD and now I am able to view the RAM usage. Any idea why it looks so high for this small forum?



That doesn't look bad. You are using 1 GB out of 4.5 GB. Dont forget that every modern OS like Linux uses the remaining RAM for Caching - and exactly that shows in your graph.
Leave it like it is. Linux handles all that automatically.
Forum seems really slow for me. I find hosting an XF site is really easy. They seem really light-weight and easy on resources. idk why you are having these issues... its odd to say the least.
I often block robots which put in too many page views.I have no idea. It could be the amount of robots visiting the site? I just got all the server-side softwares updated to their latest version and everything at the back looks fine.



root@server2 [~]# free -m
total used free shared buffers cached
Mem: 4608 4574 33 0 0 1604
-/+ buffers/cache: 2969 1638
Swap: 0 0 0
The reason you RAM usage increase when I made some changes is I allocated enough RAM to innodb_bufferpool for your innodb data.
You also have 1.6GB of RAM free to use
Rich (BB code):root@server2 [~]# free -m total used free shared buffers cached Mem: 4608 4574 33 0 0 1604 -/+ buffers/cache: 2969 1638 Swap: 0 0 0
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