tidb topsql 源码
tidb topsql 代码
文件路径：/metrics/topsql.go
// Copyright 2021 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package metrics
import "github.com/prometheus/client_golang/prometheus"
// Top SQL metrics.
var (
TopSQLIgnoredCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "tidb",
Subsystem: "topsql",
Name: "ignored_total",
Help: "Counter of ignored top-sql metrics (register-sql, register-plan, collect-data and report-data), normally it should be 0.",
}, []string{LblType})
TopSQLReportDurationHistogram = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "topsql",
Name: "report_duration_seconds",
Help: "Bucket histogram of reporting time (s) to the top-sql agent",
Buckets: prometheus.ExponentialBuckets(0.001, 2, 24), // 1ms ~ 2.3h
}, []string{LblType, LblResult})
TopSQLReportDataHistogram = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "topsql",
Name: "report_data_total",
Help: "Bucket histogram of reporting records/sql/plan count to the top-sql agent.",
Buckets: prometheus.ExponentialBuckets(1, 2, 20), // 1 ~ 524288
}, []string{LblType})
)
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