Merge pull request kubernetes#94134 from tkashem/etcd-request-duration-bucket

Make similar buckets for api and etcd request duration histogram

Author: k8s-ci-robot

staging/src/k8s.io/apiserver/pkg/storage/etcd3/metrics/metrics.go

@@ -35,8 +35,12 @@ import (
 var (
 	etcdRequestLatency = compbasemetrics.NewHistogramVec(
 		&compbasemetrics.HistogramOpts{
-			Name:           "etcd_request_duration_seconds",
-			Help:           "Etcd request latency in seconds for each operation and object type.",
+			Name: "etcd_request_duration_seconds",
+			Help: "Etcd request latency in seconds for each operation and object type.",
+			// Keeping it similar to the buckets used by the apiserver_request_duration_seconds metric so that
+			// api latency and etcd latency can be more comparable side by side.
+			Buckets: []float64{.005, .01, .025, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.7,
+				0.8, 0.9, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 40, 50, 60},
 			StabilityLevel: compbasemetrics.ALPHA,
 		},
 		[]string{"operation", "type"},