Calculate rate from count

[cyberoblivion]

I need to calculate the rate per second of requests coming into a tomcat instance.

I setup JMX bridge for zabbix and I am collecting "requestCount" which is an ever increasing number of requests processed. I would like to calculate the request rate by dividing the change in requestCount by the number of seconds elapsed since last time requestCount was collected.

So something like this:
change(requestCount) / (now - lastTimeCollected)

Is there a way to know the last clocktime an item was collected?

[peatb]

There's a very easy way to fix this. In your item look for the option called 'store value as' and choose 'delta (speed per second)' instead of 'as is' and you're done.

[cyberoblivion]

I figured there had to be! Thanks!