metrics: Explain choice of TDigest compression parameter

tsenart · Jul 12, 2018 · b6cb4d6 · b6cb4d6
1 parent e8136be
commit b6cb4d6
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/lib/metrics.go b/lib/metrics.go
@@ -136,6 +136,8 @@ func (m *Metrics) init() {
 	}
 
 	if m.latencies == nil {
+		// This compression parameter value is the recommended value
+		// for normal uses as per http://javadox.com/com.tdunning/t-digest/3.0/com/tdunning/math/stats/TDigest.html
 		m.latencies = newTdigestEstimator(100)
 	}