# [mrtg] Re: Max Rates reported by mrtg

PAUL WILLIAMSON pwilliamson at mandtbank.com
Wed Dec 4 12:29:30 MET 2002

```I'm just saying that the daily 5 minute value is not
a max, it is just the value.  I realize the daily 5
minute readings are normalized.  Here is one way to
look at it...

A daily sequence may look like this in the database:

12:00 45
12:05 50
12:10 65
12:15 75
12:20 60
12:25 10
12:30 45
12:35 54
12:40 12
12:45 41
12:50 71
12:55 31

I know there are 4 values, but I'm just trying to
demonstrate one example...

In the Weekly Max (this is not exact, but close) the
max for the 12:00-12:25 will be 75 and 12:30-12:55
will be 71.  This has nothing to do with the averages,
which are calculated from the same values the
normalized 5 minute rates are calculated.

Paul

>>> "Koelstra, J. (Jan)" <JKoelstra at MINSZW.NL> 12/04/02 04:13 AM >>>

Paul, John,

Almost right...

The weekly max is the maximum value recorded during the polling of the
target
The Daily graph shows the normalized values for 5 minute intervals.

How the normalized values are calculated was discussed previously in
this mailinglist:
http://www.ee.ethz.ch/~slist/mrtg/msg18986.html

Jan.

-----Original Message-----
From: PAUL WILLIAMSON [mailto:pwilliamson at mandtbank.com]
Sent: Wednesday, December 04, 2002 2:14 AM
To: jhgraves at ddi-wans.com; mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: Max Rates reported by mrtg

You need to take into consideration that the Daily
is not a max, but a 5 minute average.  The Weekly
max is the maximum value of six 5 minute averages.

Paul

>>> John Graves <jhgraves at ddi-wans.com> 12/03/02 16:27 PM >>>

Why is the weekly max rate (30 minute average) consistently larger  than

the Daily Max rate (5 minute average)?   This seems to be true even on a

fresh graph when there is not any historical data.

John Graves

Dynamic Devices, Inc.
781-245-9100

We make  your  data, data and voice, and data, voice and video
connections happen.... easily!

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