Recommended graph_args

Set arguments for the rrd grapher with attribute graph_args. This is used to control how the generated graph looks, and how values are interpreted or presented.

You can override plugin defaults on Munin master via your own settings on plugin level in munin.conf.

See rrdgraph man page for more details.

Scale

--logarithmic

Plot these values on a logarithmic scale. Should almost never be used, but probably more often than we do now. Logarithmic scale is very useful when the collected values spans more than one to two magnitudes. It makes it possible to see the different small values as well as the different large values - instead of just the large values as usual.

Logarithmic has been tested on netstat (connection count) and some other graphs with good results.

Units

See Best Current Practices for good plugin graphs

--base <value>

Set to 1024 for things that are counted in binary units, such as memory (but not network bandwidth)

Set to 1000 for default SI units

--units-exponent <value>

Set to 3 force display unit to K, -6 would force display in u/micro.

Axis

--lower-limit <value>

Start the Y-axis at value e.g. --lower-limit 0 (also seen as: -l 0)

--upper-limit <value>

Set value to 100 for percentage graphs, ends the Y-axis at 100 (also seen as: -u 100)

--rigid

Force rrdgraph y-axis scale to the set upper and lower limit. Usually, the graph scale can overrun. (also seen as: -r)