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Help interpreting this freemem/freeswap graph


 
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# 1  
Help interpreting this freemem/freeswap graph

Hi,

I am sure some gurus will recognize what this graph is. This is provided by our SA but I can't understand his explanation. I am not sure if this is from kSar or Cacti. The link that I was given to is to a kSar directory so I am assuming this output is from kSar.

Hopefully, I can get a better explanations from the gurus on this forum.

Basically, the information that I am after is what is the highest free memory I have for the month.

Does the freemem graph means that it the amount of free memory I have?

For the freeswap, if the graph line is at its highest, that means no swapping? So the more swap space available, the less swapping is happening?

Any reply much appreciated. Thanks.
Help interpreting this freemem/freeswap graph-freemem_freeswapgif
# 2  
What is your system? Some systems deal with swap in a different way.

I suspect you are on a true UNIX system like HPUX/Solaris/etc, these usually reserve swap space for memory, i.e. the more memory you use, the more swap you use, whether your system is actually using that swap space or not.

Linux on the other hand doesn't allocate swap at all unless you're running out of memory -- which doesn't agree with this graph at all.
 

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