metrics.go

Documentation: go.etcd.io/etcd/server/v3/etcdserver/api/snap

     1  // Copyright 2015 The etcd Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package snap
    16  
    17  import "github.com/prometheus/client_golang/prometheus"
    18  
    19  var (
    20  	snapMarshallingSec = prometheus.NewHistogram(prometheus.HistogramOpts{
    21  		Namespace: "etcd_debugging",
    22  		Subsystem: "snap",
    23  		Name:      "save_marshalling_duration_seconds",
    24  		Help:      "The marshalling cost distributions of save called by snapshot.",
    25  
    26  		// lowest bucket start of upper bound 0.001 sec (1 ms) with factor 2
    27  		// highest bucket start of 0.001 sec * 2^13 == 8.192 sec
    28  		Buckets: prometheus.ExponentialBuckets(0.001, 2, 14),
    29  	})
    30  
    31  	snapSaveSec = prometheus.NewHistogram(prometheus.HistogramOpts{
    32  		Namespace: "etcd_debugging",
    33  		Subsystem: "snap",
    34  		Name:      "save_total_duration_seconds",
    35  		Help:      "The total latency distributions of save called by snapshot.",
    36  
    37  		// lowest bucket start of upper bound 0.001 sec (1 ms) with factor 2
    38  		// highest bucket start of 0.001 sec * 2^13 == 8.192 sec
    39  		Buckets: prometheus.ExponentialBuckets(0.001, 2, 14),
    40  	})
    41  
    42  	snapFsyncSec = prometheus.NewHistogram(prometheus.HistogramOpts{
    43  		Namespace: "etcd",
    44  		Subsystem: "snap",
    45  		Name:      "fsync_duration_seconds",
    46  		Help:      "The latency distributions of fsync called by snap.",
    47  
    48  		// lowest bucket start of upper bound 0.001 sec (1 ms) with factor 2
    49  		// highest bucket start of 0.001 sec * 2^13 == 8.192 sec
    50  		Buckets: prometheus.ExponentialBuckets(0.001, 2, 14),
    51  	})
    52  
    53  	snapDBSaveSec = prometheus.NewHistogram(prometheus.HistogramOpts{
    54  		Namespace: "etcd",
    55  		Subsystem: "snap_db",
    56  		Name:      "save_total_duration_seconds",
    57  		Help:      "The total latency distributions of v3 snapshot save",
    58  
    59  		// lowest bucket start of upper bound 0.1 sec (100 ms) with factor 2
    60  		// highest bucket start of 0.1 sec * 2^9 == 51.2 sec
    61  		Buckets: prometheus.ExponentialBuckets(0.1, 2, 10),
    62  	})
    63  
    64  	snapDBFsyncSec = prometheus.NewHistogram(prometheus.HistogramOpts{
    65  		Namespace: "etcd",
    66  		Subsystem: "snap_db",
    67  		Name:      "fsync_duration_seconds",
    68  		Help:      "The latency distributions of fsyncing .snap.db file",
    69  
    70  		// lowest bucket start of upper bound 0.001 sec (1 ms) with factor 2
    71  		// highest bucket start of 0.001 sec * 2^13 == 8.192 sec
    72  		Buckets: prometheus.ExponentialBuckets(0.001, 2, 14),
    73  	})
    74  )
    75  
    76  func init() {
    77  	prometheus.MustRegister(snapMarshallingSec)
    78  	prometheus.MustRegister(snapSaveSec)
    79  	prometheus.MustRegister(snapFsyncSec)
    80  	prometheus.MustRegister(snapDBSaveSec)
    81  	prometheus.MustRegister(snapDBFsyncSec)
    82  }
    83
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