Identify the sudden change in value in a period of 30 mins

[vineka s]

Hi all,

Need a help.

I am taking avg of a metric say for some 30 mins and at a particular point there is a sudden drop at a particular minute but it doesn't affect the the avg much as there is change only for few secs.
Is there any way by which we can identify the sudden change in value in a period of 30 mins even if the change is for a very small interval of time.?

Thanks in Advance!

[Brian Candler]

Gauge or counter?

The way to identity a sudden drop in the metric is to take an average over a shorter period of time, or indeed just look at the instantaneous value (if it's a gauge)