tidb distsql 源码
tidb distsql 代码
文件路径：/metrics/distsql.go
// Copyright 2018 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"
)
// distsql metrics.
var (
DistSQLQueryHistogram = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "distsql",
Name: "handle_query_duration_seconds",
Help: "Bucketed histogram of processing time (s) of handled queries.",
Buckets: prometheus.ExponentialBuckets(0.0005, 2, 29), // 0.5ms ~ 1.5days
}, []string{LblType, LblSQLType, LblCoprType})
DistSQLScanKeysPartialHistogram = prometheus.NewHistogram(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "distsql",
Name: "scan_keys_partial_num",
Help: "number of scanned keys for each partial result.",
},
)
DistSQLScanKeysHistogram = prometheus.NewHistogram(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "distsql",
Name: "scan_keys_num",
Help: "number of scanned keys for each query.",
},
)
DistSQLPartialCountHistogram = prometheus.NewHistogram(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "distsql",
Name: "partial_num",
Help: "number of partial results for each query.",
},
)
DistSQLCoprCacheCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "tidb",
Subsystem: "distsql",
Name: "copr_cache",
Help: "coprocessor cache hit, evict and miss number",
}, []string{LblType})
DistSQLCoprClosestReadCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "tidb",
Subsystem: "distsql",
Name: "copr_closest_read",
Help: "counter of total copr read local read hit.",
}, []string{LblType})
DistSQLCoprRespBodySize = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "distsql",
Name: "copr_resp_size",
Help: "copr task response data size in bytes.",
Buckets: prometheus.ExponentialBuckets(1024, 2, 20),
}, []string{LblStore})
)
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