Metrics Naming
The name of a metric determines the name of the file used to store the metric. Therefore, the name of a metric may include any character that is acceptable in a file name.
Simple metrics may have names like "myMetric" "xxx". The server metrics have names like "scheduler/runningJobs", "scheduler/slots/inuse", or "scheduler/jobsPerHour".
The slashes in a name separate the components of the name. If a component has the
form PROPERTY=VALUE, then the PROPERTY part identifies a property of the metric
which can be queried. For example, a metric with name
site=US/user=john/res=abc/inusecan be considered as a metric with 4 components and 3 properties, namely "site" "user" and "res".