[mrtg] Re: "Withpeak" quickie...

Jay Hennigan jay at west.net
Sun Jan 7 18:47:24 MET 2001

On Sun, 7 Jan 2001, Bob's Lists wrote:

> I know the easiest answer to this - try it... unfortunately I'm remote from
> the machine in question right now so it's not that easy so I'll ask here...
> The docs suggest that withpeak can only be used for wmy - does anyone know
> if it works with dwmy ?

The daily graph by default has the highest definition, so its normal and
only indication is the peak during each sample period, typically five minutes.

As the graphs are compressed for the week, month, and year, the samples are
averaged.  For example, the weekly graph plots in half-hour granularity.
So, each point on the weekly graph is an average of six points on the daily
graph.  6 * 5-minutes = 30-minutes.  Similarly, the monthly graph is a two
hour average, and the yearly graph is a daily average.

The WithPeak option, in addition to the averaged sample, plots an additional
point showing the highest of the samples being averaged.

On the daily graph, because the samples are not averaged and already shown
with the finest granularity, the "peak" value is identical to the displayed
value.  Therefore displaying it would be meaningless.

Jay Hennigan  -  Network Administration  -  jay at west.net
NetLojix Communications, Inc.  NASDAQ: NETX  -  http://www.netlojix.com/
WestNet:  Connecting you to the planet.  805 884-6323

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