[mrtg] Re: performing math on snmp pulls

[Todd Robert White]

ok, well let me clear up my question some.  I want to graph ((served
-Fetched)/served) * 100

I have done a graph of the objects fetched and served on the same graph
but what I'm really trying to track is the white space between the two
which can be pretty small at times.  Here are some of the configs I've
tried:

Target[fetched_sub_served]:
(.1.3.6.1.4.1.1967.3.1.2.1.3.1.13.0:public at 205.x.x.x -
.1.3.6.1.4.1.1967.3.1.2.1.3.1.7.0:public at 205.x.x.x) /
.1.3.6.1.4.1.1967.3.1.2.1.3.1.13.0:public at 205.x.x.x


Target[fetched_sub_served]:
((.1.3.6.1.4.1.1967.3.1.2.1.3.1.13.0&.1.3.6.1.4.1.1967.3.1.2.1.3.1.13.0:public at 205.x.x.x) 
-
(.1.3.6.1.4.1.1967.3.1.2.1.3.1.7.0&.1.3.6.1.4.1.1967.3.1.2.1.3.1.7.0:public at 205.x.x.x))
/
(.1.3.6.1.4.1.1967.3.1.2.1.3.1.13.0&.1.3.6.1.4.1.1967.3.1.2.1.3.1.13.0:public at 205.x.x.x)


Can someone point out what I'm doing wrong?
					

On Fri, 16 Jul 1999, Stieers, Ken wrote:

> Look in the config.html that is part of the standard distribution for the
> section on Target.  Its in there. 
> 
> 
> Ken 
> 
> 
> > -----Original Message-----
> > From: Todd White [mailto:twhite at cc.gatech.edu]
> > Sent: Thursday, July 15, 1999 5:12 PM
> > To: mrtg at list.ee.ethz.ch
> > Subject: [mrtg] performing math on snmp pulls
> > 
> > 
> > I need a way to perform math on some stuff I'm pulling before it gets
> > graphed. We are using a cache server that has a private mib 
> > and need to
> > subtract one pull from another. Can someone tell me how to 
> > make the config
> > file or point me to some examples? Thanks.
> > _____________________________________________________________
> > Todd White (First Floor ULC)
> > Personal web page, resume, ICQ, IRC, AOL, and PGP public key at:
> > http://www.prism.gatech.edu/~gte284e
> > Alpha pager: pagetwhite at bigfoot.com or 770-379-5236
> > 
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> > 
> 

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