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})
)