tidb sli 源码
tidb sli 代码
文件路径：/metrics/sli.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"
)
var (
// SmallTxnWriteDuration uses to collect small transaction write duration.
SmallTxnWriteDuration = prometheus.NewHistogram(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "sli",
Name: "small_txn_write_duration_seconds",
Help: "Bucketed histogram of small transaction write time (s).",
Buckets: prometheus.ExponentialBuckets(0.001, 2, 28), // 1ms ~ 74h
})
// TxnWriteThroughput uses to collect transaction write throughput which transaction is not small.
TxnWriteThroughput = prometheus.NewHistogram(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "sli",
Name: "txn_write_throughput",
Help: "Bucketed histogram of transaction write throughput (bytes/second).",
Buckets: prometheus.ExponentialBuckets(64, 1.3, 40), // 64 bytes/s ~ 2.3MB/s
})
)
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