Suppress spikes in the yearly graph.

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sblantipodi
Posts: 24
Joined: Fri Aug 05, 2011 9:21 am

Suppress spikes in the yearly graph.

Post by sblantipodi »

Hi,
all...

Is there a way to suppress skipes in the yearly graph?
beenpricked
Posts: 6
Joined: Tue Sep 20, 2011 5:35 pm

Re: Suppress spikes in the yearly graph.

Post by beenpricked »

I would like to second that, I am going to have to hand in my yearly in about two months, this would help out a ton...
Fëanor
Posts: 10
Joined: Tue Sep 13, 2011 1:41 am

Re: Suppress spikes in the yearly graph.

Post by Fëanor »

AFAIK, not specifically for the yearly graph. Here is what I would do:

Plan A: Instead of 1 graph for the year, run the graph for 3 separate timeframes (before, during, and after the spike). This way you are reporting the spike with detail, but the data from the rest of the year is still legible.

Plan B: This will affect more than just Yearly graphs, but in the Graph Template set an appropriate --upper-limit value (lower than the spike, determine where you want the cutoff to be) and enable Autoscale with the Use --alt-autoscale (accepting both limits, rrdtool default) option.
sblantipodi
Posts: 24
Joined: Fri Aug 05, 2011 9:21 am

Re: Suppress spikes in the yearly graph.

Post by sblantipodi »

Fëanor wrote:AFAIK, not specifically for the yearly graph. Here is what I would do:

Plan A: Instead of 1 graph for the year, run the graph for 3 separate timeframes (before, during, and after the spike). This way you are reporting the spike with detail, but the data from the rest of the year is still legible.

Plan B: This will affect more than just Yearly graphs, but in the Graph Template set an appropriate --upper-limit value (lower than the spike, determine where you want the cutoff to be) and enable Autoscale with the Use --alt-autoscale (accepting both limits, rrdtool default) option.
I would like to use the Plan B but I have done what you saied and the spikes is there,
no cut has been made.
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gandalf
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Re: Suppress spikes in the yearly graph.

Post by gandalf »

The recommended plan B involves cutting invalid data off at data template/data source level.
Navigate to the data template and define an e.g. upper level. This will affect all new data sources related to that data tenplate.
For existing data sources/rrd files, please use "rrdtool tune --maximum..."
R.
sblantipodi
Posts: 24
Joined: Fri Aug 05, 2011 9:21 am

Re: Suppress spikes in the yearly graph.

Post by sblantipodi »

gandalf wrote:The recommended plan B involves cutting invalid data off at data template/data source level.
Navigate to the data template and define an e.g. upper level. This will affect all new data sources related to that data tenplate.
For existing data sources/rrd files, please use "rrdtool tune --maximum..."
R.
thanks.
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