Delta only for gauges?

[ili...@luminatewireless.com]

Hi there,


According to the documentation on the website, the delta function should only be used with gauges. Why can't it be used with counters? I was hoping to use delta as a way to get a counter's true increase since it seems to account for counter resets.

Ilina

[ili...@luminatewireless.com]

Oh never mind... looks like I should just use the increase function, right?

[Julius Volz]

Correct. rate(), irate(), and increase() deal correctly with counter resets, so they are the functions to use for counters (which can only go up besides resets, and you never care about their value itself, only the increase).

delta() and deriv() are for gauges, as they don't interpret non-monotonically increasing values as resets. So you can see e.g. how much a temperature has changed in the last 1h, or see how disk usage is trending.

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[joshua_m...@homedepot.com]

How would I go about taking the delta() or an increase()?

On Thursday, April 6, 2017 at 9:42:04 AM UTC-4, Julius Volz wrote:

Correct. rate(), irate(), and increase() deal correctly with counter resets, so they are the functions to use for counters (which can only go up besides resets, and you never care about their value itself, only the increase).

delta() and deriv() are for gauges, as they don't interpret non-monotonically increasing values as resets. So you can see e.g. how much a temperature has changed in the last 1h, or see how disk usage is trending.

On Thu, Apr 6, 2017 at 1:57 AM, <ili...@luminatewireless.com> wrote:

Oh never mind... looks like I should just use the increase function, right?

On Wednesday, April 5, 2017 at 4:54:15 PM UTC-7, ili...@luminatewireless.com wrote:

Hi there,


According to the documentation on the website, the delta function should only be used with gauges. Why can't it be used with counters? I was hoping to use delta as a way to get a counter's true increase since it seems to account for counter resets.

Ilina

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[joshua_m...@homedepot.com]

delta() of** and increase()

[joshua_m...@homedepot.com]

delta() of an*** increase() - my goodness I cannot type