openstack team mailing list archive

[Julien Danjou <julien@xxxxxxxxxxx>]

On Thu, Nov 01 2012, 吴亚伟 wrote:

> Cumulative type is apparent, while even with descriptions gauge and delta
> type confuse me.
> Could you explain them through examples or by sharing an use case?

Gauge is an absolute value, like a temperature or the number of people
in a room.

Delta is a counter where each value is the difference between the
current and the previous value. Each value represents how many things
were consumed since last time a value has been sent.
It's always compared to a counter that resets to 0 once you read it.

-- 
Julien Danjou
// Free Software hacker & freelance
// http://julien.danjou.info

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