> In a normal DevStack install, each Compute instance causes one Ceilometer > Sample every 10 minutes. Except, there is an extra one every hour. And a > lot of extra ones at > the start. What's going on here? instance is one meter which is generated through both polling and notifications (see *origin* column[1]). when you create/update/delete an instance in Nova, it will generate a set of notifications relating to the instance. Ceilometer listens to those notifications and generates samples from them. [1] http://docs.openstack.org/developer/ceilometer/measurements.html#compute-nova
cheers, gord
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