Metrics Reference

Timers provide a histogram of the duration of an event, along with a measure of the rate of occurrences. Timers can be monitored using the Dropwizard dashboard widget and the IDM Prometheus endpoint. Durations in timers are measured in milliseconds. Rates are reported in number of calls per second. The following example shows a Timer metric:

{
   "_id": "sync.source.perform-action",
   "count": 2,
   "max": 371.53391,
   "mean": 370.1752705,
   "min": 368.816631,
   "p50": 371.53391,
   "p75": 371.53391,
   "p95": 371.53391,
   "p98": 371.53391,
   "p99": 371.53391,
   "p999": 371.53391,
   "stddev": 1.3586395,
   "m15_rate": 0.393388581528647,
   "m1_rate": 0.311520313228562,
   "m5_rate": 0.3804917698002856,
   "mean_rate": 0.08572717156016606,
   "duration_units": "milliseconds",
   "rate_units": "calls/second",
   "total": 740.350541,
   "_type": "timer"
 }

Summaries are similar to Timers in that they measure a distribution of events. However, Summaries record values that aren't units of time, such as user login counts. Summaries cannot be graphed in the Dropwizard dashboard widget, but are available through the Prometheus endpoint, and by querying the openidm/metrics/api endpoint directly. The following example shows a Summary metric:

{
  "_id": "audit.recon",
  "m15_rate": 0.786777163057294,
  "m1_rate": 0.623040626457124,
  "m5_rate": 0.7609835396005712,
  "mean_rate": 0.16977218861919927,
  "units": "events/second",
  "total": 4,
  "count": 4,
  "_type": "summary"
}