Graphite 0.9.14 adds a much needed feature to the JSON rendering API that is very important for Grafana. If you are experiencing slow load & rendering times for large time ranges then it is most likely caused by running Graphite 0.9.12 or lower.
The latest version of Graphite adds a
maxDataPoints parameter to the
JSON render API. Without this feature Graphite can return hundreds of
thousands of data points per graph, which can hang your browser. Be sure
to upgrade to