[mrtg] comparison graph creation

[Jason King]

Nice, thanks for the 411. This is a great place to start.

Koelstra, J. (Jan) wrote:
> Jason,
>
> Combining 2 different oid's from different sources can be done with the use of 'PseudoZero' :
>
> Target[xxx]: oid1&PseudoZero:hostA + PseudoZero&oid2:hostB
>
> See http://oss.oetiker.ch/mrtg/doc/mrtg-mibhelp.en.html#IPseudoZero_and_PseudoOne and 
> http://oss.oetiker.ch/mrtg/doc/mrtg-reference.en.html#IMulti_Target_Syntax for more details.
>
> Note when combining different oid's they have to be of the same type (e.g. rate, gauge,..) or you will no be able to graph them correctly.
>
> HTH,
>
> Jan.
>
> -----Original Message-----
> From: mrtg-bounces at lists.oetiker.ch [mailto:mrtg-bounces at lists.oetiker.ch] On Behalf Of Jason King
> Sent: Tuesday, November 06, 2007 12:34 AM
> To: mrtg at lists.oetiker.ch
> Subject: [mrtg] comparison graph creation
>
>
> I have a graph I'd like to create and I'm not sure how to go about it. 
> Right now, I have two graphs and I'd like to combine them into one. The 
> first graph uses SNMP to tell me how many connections I have going to a 
> server via my foundry switch statistics. The second graph uses SNMP to 
> tell me the CPU utilization on that same server. I'd like to have one 
> graph that shows the number of connections going to that server, and 
> then another line that shows the CPU utilization percentage. The problem 
> is, that the SNMP information is coming from two different sources.
>
> Does anyone understand what I'm looking for? What "BIG PICTURE" do I 
> need to think about? Would it be better to do something like this in 
> RRDtool?
>
> Jason King
>
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