Derived statistaics

[uSlackr]

I have a service check that returns a single value of a queue length for one of our applications. That's well and good, but in an of itselfs, the depth of that queue isn't a great indicator of system health. There are times when it is Ok for the queue to have a couple thousand items in it so long as the rate of decrease is healthy. The problem is I have no way of directly measuring that decrease.

I can certainly write a script to track the queue length over time and report back a measure of rate of decrease. But given that the data is in RRD already, I would like to know if something exists in the nagios community to do some stats on RRD data to provide statistics for that data.

Thanks
\\Greg

[abrist]

If you need the stats generated and evaluated automatically, you may have to code a custom solution/script. If you just want to graph the perfdata from the check for human evaluation, you should look into pnp4nagios.