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// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package metrics
import (
"github.com/prometheus/client_golang/prometheus"
)
// Stats metrics.
var (
AutoAnalyzeHistogram = prometheus.NewHistogram(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "statistics",
Name: "auto_analyze_duration_seconds",
Help: "Bucketed histogram of processing time (s) of auto analyze.",
Buckets: prometheus.ExponentialBuckets(0.01, 2, 24), // 10ms ~ 24h
})
AutoAnalyzeCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "tidb",
Subsystem: "statistics",
Name: "auto_analyze_total",
Help: "Counter of auto analyze.",
}, []string{LblType})
StatsInaccuracyRate = prometheus.NewHistogram(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "statistics",
Name: "stats_inaccuracy_rate",
Help: "Bucketed histogram of stats inaccuracy rate.",
Buckets: prometheus.ExponentialBuckets(0.01, 2, 14),
})
PseudoEstimation = prometheus.NewCounter(
prometheus.CounterOpts{
Namespace: "tidb",
Subsystem: "statistics",
Name: "pseudo_estimation_total",
Help: "Counter of pseudo estimation caused by outdated stats.",
})
DumpFeedbackCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "tidb",
Subsystem: "statistics",
Name: "dump_feedback_total",
Help: "Counter of dumping feedback.",
}, []string{LblType})
UpdateStatsCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "tidb",
Subsystem: "statistics",
Name: "update_stats_total",
Help: "Counter of updating stats using feedback.",
}, []string{LblType})
StoreQueryFeedbackCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "tidb",
Subsystem: "statistics",
Name: "store_query_feedback_total",
Help: "Counter of storing query feedback.",
}, []string{LblType})
GetStoreLimitErrorCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "tidb",
Subsystem: "statistics",
Name: "get_store_limit_token_error",
Help: "store token is up to the limit, probably because one of the stores is the hotspot or unavailable",
}, []string{LblAddress, LblStore})
SignificantFeedbackCounter = prometheus.NewCounter(
prometheus.CounterOpts{
Namespace: "tidb",
Subsystem: "statistics",
Name: "high_error_rate_feedback_total",
Help: "Counter of query feedback whose actual count is much different than calculated by current statistics",
})
FastAnalyzeHistogram = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "statistics",
Name: "fast_analyze_status",
Help: "Bucketed histogram of some stats in fast analyze.",
Buckets: prometheus.ExponentialBuckets(1, 2, 16),
}, []string{LblSQLType, LblType})
)