[mrtg] Re: monitoring system load with floating point numbers

[Daniel R . Kilbourne]

yes. there are 2 options.

First, the easy one: multiply the value you get by 100 (and make sure to point that out on the graph)
ie:

 Target[my_host]: 1.3.6.1.4.1.2021.10.1.3.2&1.3.6.1.4.1.2021.10.1.3.2:public at my_host * 100
 MaxBytes[my_host]: 1000
 AbsMax[my_host]: 20000
 Options[my_host]: growright,gauge,integer,nopercent
 Title[my_host]: Load Average for my_host
 PageTop[my_host]: <H1>Load Average for my_host</H1>
 PageFoot[my_host]: <HR size=2 noshade>This page is managed by: <A HREF="mail
 to:matt at magma-da.com"><I>Matt Engen*</I>
 YLegend[my_host]: Load
 ShortLegend[my_host]:
 Legend1[my_host]: load (x 100)
 Legend2[my_host]: load (x 100)
 LegendI[my_host]: Avg:
 LegendO[my_host]: Avg:

Second, the slightly more involved way would be to get rrdtool installed and use it (http://www.rrdtool.org)
as the replacement for rateup. It could then handle non-integer values.




Matt Engen extolled:
> 
> Hi,
> 
> I have been using mrtg for several months to monitor traffic on over
> 50 machines. I have decided to expand my use to system load. It is
> working. However, system load is returned using 2 decimal places and
> mrtg will only use the whole number. This causes the output graphs
> to be off. For example:
> >snmpget <my_host> public .1.3.6.1.4.1.2021.10.1.3.2
> enterprises.ucdavis.laTable.laEntry.laLoad.2 = 3.17
> 
> Here the load returned is 3.17. Yet mrtg will only show the "3". If the 
> return value is 3.99, mrtg will still only use the 3. This is not very helpful.
> I have gone through all the documentation and mailing lists to
> no avail. Actually, I saw one post that implied I should upgrade. So,
> I just upgraded to version 2.94. This still did not help. I am running
> on a Solaris 7 machine (sparc). In my mrtg.cfg file, I use the following:
> 
> Target[my_host]: 1.3.6.1.4.1.2021.10.1.3.2&1.3.6.1.4.1.2021.10.1.3.2:public at my_host
> MaxBytes[my_host]: 10
> AbsMax[my_host]: 200
> Options[my_host]: growright,gauge,integer,nopercent
> Title[my_host]: Load Average for my_host
> PageTop[my_host]: <H1>Load Average for my_host</H1>
> PageFoot[my_host]: <HR size=2 noshade>This page is managed by: <A HREF="mail
> to:matt at magma-da.com"><I>Matt Engen*</I>
> YLegend[my_host]: Load
> ShortLegend[my_host]:
> Legend1[my_host]: load
> Legend2[my_host]: load
> LegendI[my_host]: Avg:
> LegendO[my_host]: Avg:
> 
> 
> The "integer" under options seems to stick out. However, when I take this out I get Kb/s which of course is not useful for this measurement. Has anyone solved this problem?
> 
> Thanks in advance for your help.
> 
> -Matt
> 
-- 
--------------------------------
Daniel R. Kilbourne
daniel.kilbourne at voyager.net
Network Engineering
Voyager.net - A CoreComm Company
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