[rrd-users] 3 questions

Shabnam Shahreza shabnam.shahreza at alpha-group.ca
Wed Oct 12 20:08:35 CEST 2011

Hi rrd-users;

I am new to rrdtool and have few questions:

1)      How can I draw only dots/pixels for the VDEF (MAXIMUM) values and not *line* or dashed line?

I mean only one dot for the maximum value for start-to-end time period?

2)      And how can I compare different VDEF (MAXIMUMs) from several rrd files in one graph and pick the MAX of them? Do I need to create a new rrd file and extract the max from there?

3)      And how can I calculate separate VDEF (MAXIMUM) for different start-to-end time frames in one graph, such as monthly?

The answers can help me to draw only maximum values per month from several sources but in one graph.
(each dot in the below example can come from a different rrd file)

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