Expected VPS RAM usage?

Please see my other (mis-placed?) post where I ask about how VPS uses RAM. (I’m running WordPress with a lot of plugins and need to upgrade to VPS. I just want to understand what to expect so that I can get the right package.


(At the risk of cross-posting, I’m thinking there might be people who see this forum that might not see questions over there…)

[hopefully we won’t have cross-posting issues with the new forum platform :)]

So, on an empty VPS (one just created, running stock Apache and PHP, nothing else) the OS uses about 100MB of RAM.

[psXXXXXX]$ free -m
             total       used       free     shared    buffers     cached
Mem:          2000         93       1906          0          0         38
-/+ buffers/cache:         55       1944
Swap:            0          0          0
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