Looking at my Linux box ( I am running Red Hat Enterprise Linux Server release 6.4 ), I was wondering where my RAM had gone .....
total used free shared buffers cached
Mem: 16081 8876 7205 0 378 7036
-/+ buffers/cache: 1462 14619
Swap: 8015 153 7862
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This is what I have: -
free -m
total used free shared buffers cached
Mem: 16081 8876 7205 0 378 7036
-/+ buffers/cache: 1462 14619
Swap: 8015 153 7862
Don't worry, this site had the answer: -
<snip>
How do I see how much free ram I really have?
To see how much ram is free to use for your applications, run free -m and look at the row that says "-/+ buffers/cache" in the column that says "free". That is your answer in megabytes:
If you don't know how to read the numbers, you'll think the ram is 99% full when it's really just 42%.
To see how much ram is free to use for your applications, run free -m and look at the row that says "-/+ buffers/cache" in the column that says "free". That is your answer in megabytes:
$ free -m
total used free shared buffers cached
Mem: 1504 1491 13 0 91 764
-/+ buffers/cache: 635
869Swap: 2047 6 2041
$
If you don't know how to read the numbers, you'll think the ram is 99% full when it's really just 42%.
</snip>
In other words, I have most of my 16 GB RAM available to me ( ~89% ) which is nice.