[Openstack] [metering] delta vs. cumulative meters

Doug Hellmann doug.hellmann at dreamhost.com
Wed May 30 14:08:21 UTC 2012


On Wed, May 30, 2012 at 4:18 AM, Julien Danjou
<julien.danjou at enovance.com>wrote:

> On Tue, May 29 2012, Doug Hellmann wrote:
>
>
> […]
>
> > Thoughts?
>
> As you pointed out, it's not safe to compute delta when your counter is
> gauge, and vice versa. Rather than documenting, we may just add the
> counter type (à la RRD: gauge, counter, derive…) to the meter, so it's
> easier to make things evolve and discover counters by themselves.


I like that. I'll open a bug to do that.

Doug
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