Excerpts from George Shuklin's message of 2015-02-11 17:59:02 -0800: > Ceilometer is in sad state. > > 1. Collector leaks memory. We ran it on same host with mongo, and it > grab 29Gb out of 32, leaving mongo with less than gig memory available.
I wonder how hard it would be to push Ceilometer down the road of being an OpenStack shim for collectd instead of a full implementation. This would make the problem above go away, as collectd is written in C and is well known to be highly optimized for exactly this type of workload. You would need a more advanced AMQP plugin that understands how to turn the notifications in OpenStack into collectd values, and then make some decisions on whether to keep Ceilometer's SQL/MongoDB backend or just teach Ceilometer to read from the various collectd output formats. I think the latter will be a bigger win, but the former would be easier for a more incremental migration. Anyway, if people are interested in "saving" Ceilometer from being a bit sluggish, that seems like a good first step in the investigation. _______________________________________________ OpenStack-operators mailing list OpenStack-operators@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
