Nagios Support Forum

@jvaira, Can you take a screenshot of the graph and then go to the Advanced service settings and take a screenshot of the "Advanced Status Detail" page? I'd like to see the performance data output so I can test it out in the lab.
Also, please upload the RRD and XML files for this service from /usr/local/nagios/var/spool/perfdata folder.

@npolovenko The only files I am seeing in that folder are named timestamp.perfdata.service and timestamp.perdata.host

@jvaira, Sorry, wrong path. XML and RRD files should be in this folder:

/usr/local/nagios/share/perfdata/

Also, please upload a screenshot of the "Advanced Status Detail" page.

Hello @npolovenko attached are the requested files.

Your question
"Is this because the performance graph in Nagios registers any reading less than zero seconds as a zero?"

Is somewhat true, the graphs can only show up to 2 decimal points. Anything smaller that that, it will not be displayed.
Also, the storage of the performance data is stored in a Round Robin Database and the rrdtool application that stores the data, is probably doing the rounding of the data to zero

But your screen capture truly shows zero.

Tom,
Thank you for the clarification. That would make sense as the read and write latency are usually around 3 milliseconds or 0.003 seconds. Since that is the case do I have any options for graphing IO ?

I took a look at the checkcounter commands and the check_pdh command and I did not see a modifier option to change the output of the command to let's say, multiply it by 1000 to get a whole number.
A couple of options are to write a wrapper script that runs the check and changes the output of the data to something larger so it will graph.
Or, find a powershell script that does what you need and run that instead.

Thanks Tom, I'll just go the Powershell route.

Your welcome. Let us know how it works out for you.