Yes, Claudio, that is the limitation of the current implementation. Since pipelines weren't always so separate, the limitation used to only be to meters with the same interval. The note in http://docs.openstack.org/developer/ceilometer/configuration.html#multi-meter-arithmetic-transformer should be changed to say "The calculation is limited to meters from the same source.".
Yes, Claudio, that is the limitation of the current implementation. Since pipelines weren't always so separate, the limitation used to only be to meters with the same interval. The note in http:// docs.openstack. org/developer/ ceilometer/ configuration. html#multi- meter-arithmeti c-transformer should be changed to say "The calculation is limited to meters from the same source.".