coreos/etcd — pull request #483 by bcwaldon (2014-01-16 06:25:34+00:00)
Title: WIP: integrate go-metrics

* use rcrowley/go-metrics to time some internal events
* push timing data to graphite if configured to do so

There are changes to goraft/raft (see top commit) that will need to go through a separate PR once we decide how to move forward.