I want to create a Jira epic to address some of the inconsistencies in the usability of OpenNMS.
Here are some examples:
Change the performance metrics directory from $OPENNMS_HOME/share/rrd/snmp to $OPENNMS_HOME/share/rrd/performance (or data)
Change the name of datacollection-config.xml to snmp-datacollection-config.xml to better match the http, xml, wsman, etc. configuration files.
Change the name of snmp-graph.properties to performance-graph.properties, etc.