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// 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
})
)