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Feature #5307

Add logarithmic scale option to RRD graphs

Added by Jim Pingle over 1 year ago.

Status:
New
Priority:
Low
Assignee:
-
Category:
RRD Graphs
Target version:
Start date:
10/14/2015
Due date:
% Done:

0%


Description

Some graphs have data at much different scales, such as the quality graph's loss and latency, where detail can be lost on the smaller scale when the larger has a spike.

Adding a logarithmic option can help show detail with both in some cases, and would be nice to have.

It requires using absolute mode, so it could be a third option under style, for example:
  • Inverse
  • Absolute
  • Absolute Logarithmic

In the RRD code, it must set a lower limit > 0 (e.g. 0.001), and pass the --logarithmic option.

See the attached patch, which forces absolute mode and uses logarithmic scaling for the quality graph only.

quality-log-scale.diff Magnifier (1.07 KB) Jim Pingle, 10/14/2015 07:37 AM

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