[mrtg] Re: mrtg for home users: more precision than '5minuteaverage'?

PAUL WILLIAMSON pwilliamson at mandtbank.com
Thu Mar 30 22:06:01 MEST 2006

>>> "Constantine A. Murenin" <mureninc at gmail.com> 03/30/06 2:54 PM >>>
> All accuracy I care about is that if the dsl line is used
> full-speed for 1 minute, it's reported as full speed in 
> the graph; and if the line is not used, reported not used.

This is not what MRTG does, so right off the bat, you are 
forcing a square peg into a round hole.

> Obviously, I don't have time now to write my own polling 
> solution, and  I don't see why this cannot be done with mrtg.

It's not obvious.  It would take 30 second to put in a cronjob 
to implement something like this.  It's not hard.

> I don't want to do that. I trust my chroot'ed httpd, and I trust 
> that mrtg should not stop at providing 5-minute accuracy in 
> regular mode as opposed to RRDTool mode.

> I don't want to install any third-party CGIs, I'm quite happy 
> with what mrtg offers, except that 'Interval: 1' doesn't 
> work. :(

What is MRTG?  It's as much a 3rd party app as routers2 or 
cacti or cricket or any other polling solution.  RRDTool is 
just a backend.

Have you even *tried* using RRDTool as the backend and 
MRTG with interval set to 1?  MRTG is not going to do 1 
minute intervals, any time soon, if ever.

Hint:  It does what you are asking for, sort of.


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