[Asterisk-Users] Virtual Memory Usage

[Rich Adamson]

> This is another thing: Linux tends to use the availble free memory for
> IO buffers, disk cache and such. So in the output of 'free', look at the
> second line.
 
I'm not the OP, but for those of us that are not considered strong sys 
admin's (but have been around and using linux since early 90's), could 
you provide us with a short list of what we should be looking at to
monitor/manage memory? (More of an educational thingie.)

When I run 'free' on a small 15 user system as an example, I see:
             total       used       free     shared    buffers     cached
Mem:        451172     449788       1384          0     121740      63036
-/+ buffers/cache:     265012     186160
Swap:       917496        320     917176

which kind of implies that I should probably add mem to this box. Am I
approaching this backasswards or drawing an incorrect conclusion?