// Copyright 2017 PingCAP, Inc. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // See the License for the specific language governing permissions and // limitations under the License. package metrics import ( "github.com/prometheus/client_golang/prometheus" ) // Metrics for the timestamp oracle. var ( TSFutureWaitDuration = prometheus.NewHistogram( prometheus.HistogramOpts{ Namespace: "tidb", Subsystem: "pdclient", Name: "ts_future_wait_seconds", Help: "Bucketed histogram of seconds cost for waiting timestamp future.", Buckets: prometheus.ExponentialBuckets(0.000005, 2, 30), // 5us ~ 2560s }) )