I have a VPS with directadmin installed on.
The amount of memory I bought from my VPS provider is 1GB and in the system it it shows that I have 1GB of memory available.
From the beginning I regularly checked the memory usage of the system, and it never came below 600MB. I thought it's ok until recently. I suspect something must be wrong, because my memory usage now is above 850MB.
I used the
ps aux commands and got the list of running processes on the system. after doing the math I got that the memory usage of apache and mysql summed up should not be much above 500MB.
I then did something else: I deactivated the apache and mysql and again saw that the used memory is stuck around 600MB.
What I want to know here is, am I doing it wrong (calculating memory)? Or is my provider lying about the amount of memory they gave me? Is it even possible, or there's a hidden process eating up the system memory?