Diamond is a python daemon that collects system metrics and publishes them to Graphite (and others). It is capable of collecting cpu, memory, network, i/o, load and disk metrics. Additionally, it features an API for implementing custom collectors for gathering metrics from almost any source.
Coverage increased (+0.04%) to 24.703% when pulling 3dbe8aa8bbeda276397c97b0a9d06acd125a8679 on bloomberg:tsdb-tagnames into f2bece462577a7c557be8a9f90f6b9340c3db571 on python-diamond:master.
These characters are allowed in both tag and metric names as per http://opentsdb.net/docs/build/html/user_guide/query/timeseries.html#precisions-on-metrics-and-tags