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*: add MVCC version ratio to slow log metrics (#44897) #47645

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Merged
merged 4 commits into from
Oct 16, 2023
Merged

*: add MVCC version ratio to slow log metrics (#44897) #47645

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d614fb1
*: support MVCC version ratio to slow log metrics
jackysp Jun 22, 2023
b5eece5
fix compile
jackysp Jun 22, 2023
187f0a6
tiny fix
jackysp Jun 22, 2023
d499983
add grafana script
jackysp Jun 22, 2023
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3 changes: 3 additions & 0 deletions executor/adapter.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1606,6 +1606,9 @@ func (a *ExecStmt) LogSlowQuery(txnTS uint64, succ bool, hasMoreResults bool) {
executor_metrics.TotalQueryProcHistogramGeneral.Observe(costTime.Seconds())
executor_metrics.TotalCopProcHistogramGeneral.Observe(execDetail.TimeDetail.ProcessTime.Seconds())
executor_metrics.TotalCopWaitHistogramGeneral.Observe(execDetail.TimeDetail.WaitTime.Seconds())
if execDetail.ScanDetail != nil && execDetail.ScanDetail.ProcessedKeys != 0 {
executor_metrics.CopMVCCRatioHistogramGeneral.Observe(float64(execDetail.ScanDetail.TotalKeys) / float64(execDetail.ScanDetail.ProcessedKeys))
}
}
var userString string
if sessVars.User != nil {
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2 changes: 2 additions & 0 deletions executor/metrics/metrics.go
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,7 @@ var (
TotalQueryProcHistogramGeneral prometheus.Observer
TotalCopProcHistogramGeneral prometheus.Observer
TotalCopWaitHistogramGeneral prometheus.Observer
CopMVCCRatioHistogramGeneral prometheus.Observer
TotalQueryProcHistogramInternal prometheus.Observer
TotalCopProcHistogramInternal prometheus.Observer
TotalCopWaitHistogramInternal prometheus.Observer
Expand Down Expand Up @@ -137,6 +138,7 @@ func InitMetricsVars() {
TotalQueryProcHistogramGeneral = metrics.TotalQueryProcHistogram.WithLabelValues(metrics.LblGeneral)
TotalCopProcHistogramGeneral = metrics.TotalCopProcHistogram.WithLabelValues(metrics.LblGeneral)
TotalCopWaitHistogramGeneral = metrics.TotalCopWaitHistogram.WithLabelValues(metrics.LblGeneral)
CopMVCCRatioHistogramGeneral = metrics.CopMVCCRatioHistogram.WithLabelValues(metrics.LblGeneral)
TotalQueryProcHistogramInternal = metrics.TotalQueryProcHistogram.WithLabelValues(metrics.LblInternal)
TotalCopProcHistogramInternal = metrics.TotalCopProcHistogram.WithLabelValues(metrics.LblInternal)
TotalCopWaitHistogramInternal = metrics.TotalCopWaitHistogram.WithLabelValues(metrics.LblInternal)
Expand Down
29 changes: 22 additions & 7 deletions metrics/grafana/tidb.json
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Original file line number Diff line number Diff line change
Expand Up @@ -814,31 +814,44 @@
"pointradius": 5,
"points": false,
"renderer": "flot",
"seriesOverrides": [],
"seriesOverrides": [
{
"$$hashKey": "object:211",
"alias": "/mvcc_ratio/",
"yaxis": 2
}
],
"spaceLength": 10,
"stack": false,
"steppedLine": false,
"targets": [
{
"expr": "histogram_quantile(0.90, sum(rate(tidb_server_slow_query_process_duration_seconds_bucket{k8s_cluster=\"$k8s_cluster\", tidb_cluster=\"$tidb_cluster\", instance=~\"$instance\"}[1m])) by (le,sql_type))",
"expr": "histogram_quantile(0.90, sum(rate(tidb_server_slow_query_process_duration_seconds_bucket{k8s_cluster=\"$k8s_cluster\", tidb_cluster=\"$tidb_cluster\", instance=~\"$instance\", sql_type=\"general\"}[1m])) by (le,sql_type))",
"format": "time_series",
"intervalFactor": 2,
"legendFormat": "all_proc_{{sql_type}}",
"legendFormat": "all_proc",
"refId": "A"
},
{
"expr": "histogram_quantile(0.90, sum(rate(tidb_server_slow_query_cop_duration_seconds_bucket{k8s_cluster=\"$k8s_cluster\", tidb_cluster=\"$tidb_cluster\", instance=~\"$instance\"}[1m])) by (le,sql_type))",
"expr": "histogram_quantile(0.90, sum(rate(tidb_server_slow_query_cop_duration_seconds_bucket{k8s_cluster=\"$k8s_cluster\", tidb_cluster=\"$tidb_cluster\", instance=~\"$instance\", sql_type=\"general\"}[1m])) by (le,sql_type))",
"format": "time_series",
"intervalFactor": 2,
"legendFormat": "all_cop_proc_{{sql_type}}",
"legendFormat": "all_cop_proc",
"refId": "B"
},
{
"expr": "histogram_quantile(0.90, sum(rate(tidb_server_slow_query_wait_duration_seconds_bucket{k8s_cluster=\"$k8s_cluster\", tidb_cluster=\"$tidb_cluster\", instance=~\"$instance\"}[1m])) by (le,sql_type))",
"expr": "histogram_quantile(0.90, sum(rate(tidb_server_slow_query_wait_duration_seconds_bucket{k8s_cluster=\"$k8s_cluster\", tidb_cluster=\"$tidb_cluster\", instance=~\"$instance\", sql_type=\"general\"}[1m])) by (le,sql_type))",
"format": "time_series",
"intervalFactor": 2,
"legendFormat": "all_cop_wait_{{sql_type}}",
"legendFormat": "all_cop_wait",
"refId": "C"
},
{
"expr": "histogram_quantile(0.90, sum(rate(tidb_server_slow_query_cop_mvcc_ratio_bucket{k8s_cluster=\"$k8s_cluster\", tidb_cluster=\"$tidb_cluster\", instance=~\"$instance\", sql_type=\"general\"}[1m])) by (le,sql_type))",
"format": "time_series",
"intervalFactor": 2,
"legendFormat": "mvcc_ratio",
"refId": "D"
}
],
"thresholds": [],
Expand All @@ -861,6 +874,7 @@
},
"yaxes": [
{
"$$hashKey": "object:119",
"format": "s",
"label": null,
"logBase": 2,
Expand All @@ -869,6 +883,7 @@
"show": true
},
{
"$$hashKey": "object:120",
"format": "short",
"label": null,
"logBase": 1,
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1 change: 1 addition & 0 deletions metrics/metrics.go
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Original file line number Diff line number Diff line change
Expand Up @@ -204,6 +204,7 @@ func RegisterMetrics() {
prometheus.MustRegister(TotalQueryProcHistogram)
prometheus.MustRegister(TotalCopProcHistogram)
prometheus.MustRegister(TotalCopWaitHistogram)
prometheus.MustRegister(CopMVCCRatioHistogram)
prometheus.MustRegister(HandleSchemaValidate)
prometheus.MustRegister(MaxProcs)
prometheus.MustRegister(GOGC)
Expand Down
10 changes: 10 additions & 0 deletions metrics/server.go
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,7 @@ var (
TotalQueryProcHistogram *prometheus.HistogramVec
TotalCopProcHistogram *prometheus.HistogramVec
TotalCopWaitHistogram *prometheus.HistogramVec
CopMVCCRatioHistogram *prometheus.HistogramVec
MaxProcs prometheus.Gauge
GOGC prometheus.Gauge
ConnIdleDurationHistogram *prometheus.HistogramVec
Expand Down Expand Up @@ -256,6 +257,15 @@ func InitServerMetrics() {
Buckets: prometheus.ExponentialBuckets(0.001, 2, 28), // 1ms ~ 1.5days
}, []string{LblSQLType})

CopMVCCRatioHistogram = NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "tidb",
Subsystem: "server",
Name: "slow_query_cop_mvcc_ratio",
Help: "Bucketed histogram of all cop total keys / processed keys in slow queries.",
Buckets: prometheus.ExponentialBuckets(0.5, 2, 21), // 0.5 ~ 262144
}, []string{LblSQLType})

MaxProcs = NewGauge(
prometheus.GaugeOpts{
Namespace: "tidb",
Expand Down