Hi Paul,
Thanks for the quick response. Yes, I'm using rrdtool-1.4.2 mrtg-2.16.2
Everything is being created from scratch (new). I set up an mrtg.cfg file
for a router, and ran mrtg against the cfg for the first time. MRTG created
the rrd databases for the interfaces. The rrd databases created have a
heartbeat of 600 and step of 60. My question is, should the heartbeat be
less?
Here is a dump of the first part of the database definition.
<rrd>
<version>0003</version>
<step>60</step> <!-- Seconds -->
<lastupdate>1259955934</lastupdate> <!-- 2009-12-04 13:45:34 CST -->
<ds>
<name> ds0 </name>
<type> COUNTER </type>
<minimal_heartbeat>600</minimal_heartbeat>
<min>0.0000000000e+00</min>
<max>1.2500000000e+08</max>
Thanks,
Gene
On Fri, Dec 4, 2009 at 1:29 PM, PAUL WILLIAMSON <[email protected]> wrote:
> >>> Gene Titus <[email protected]> 12/4/2009 1:56 PM >>>
>
> >
> > Greetings,
> >
> > I'm testing MRTG with 1 min intervals and noticed
> > that the rrd databases that get created have a heartbeat
> > set to 600. That's the same as the heartbeat on 5 minute
> > (default) interval rrd databases. What is the effect of a 5
> > minute heartbeat on 1 minute intervals?
> >
> > Thanks,
> > Gene
> In this page:
>
> http://oss.oetiker.ch/mrtg/doc/mrtg-reference.en.html
>
> It says:
>
> Note that unless you are using rrdtool you can not set Interval to less
> than 5 minutes. If you are using rrdtool you can set interval in the format
>
> Are you using RRDTool? If using log files, the interval can not be set to
> less than 5 minutes. Also, when using RRDTool, you need to set the interval
> before the creation of the rrd, otherwise no matter how you change it, the
> heartbeat will stay the same.
>
> Paul
>
>
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--
Gene Titus
Sr Operating System Specialist
The Office of Telecommunication Services
The University of Texas at Austin
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