Windows – Gaps in Windows graphs in Cacti

When I was trying to debug a custom script, I found it helpful to have the script append some information to a temp file every time it was run; that way I could make sure it was being called the way I expected. Things like the cmd line args, environment, and what value(s) it was going to return. You also might want to redirect stderr to a log file to catch error output from the script.

I see you made a Data Input Method and a Graph Template; did you also make a Data Template?

Go to Views>Graphs>Curves, there you shoudl find your Curve 'd--Used-Space'. Edit this curve and check the box 'Print Max value'.

In your line 3.65Gb;15.64;17.59;0.00;19.55 you have in fact (value)(metric);(warn level);(crit level);(min level);(max level). So you need to graph as well the max value on this metrics.