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add queue_time slice to query_duration_seconds (#4050)

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Tony Lee 2018-04-05 14:56:59 -04:00 committed by Brian Brazil
parent fe10b36b30
commit 7cd56f56df
1 changed files with 9 additions and 0 deletions
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9
promql/engine.go
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@ -50,6 +50,7 @@ const (
type engineMetrics struct {
currentQueries prometheus.Gauge
maxConcurrentQueries prometheus.Gauge
queryQueueTime prometheus.Summary
queryPrepareTime prometheus.Summary
queryInnerEval prometheus.Summary
queryResultAppend prometheus.Summary
@ -177,6 +178,13 @@ func NewEngine(logger log.Logger, reg prometheus.Registerer, maxConcurrent int,
Name: "queries_concurrent_max",
Help: "The max number of concurrent queries.",
}),
queryQueueTime: prometheus.NewSummary(prometheus.SummaryOpts{
Namespace: namespace,
Subsystem: subsystem,
Name: "query_duration_seconds",
Help: "Query timings",
ConstLabels: prometheus.Labels{"slice": "queue_time"},
}),
queryPrepareTime: prometheus.NewSummary(prometheus.SummaryOpts{
Namespace: namespace,
Subsystem: subsystem,
@ -308,6 +316,7 @@ func (ng *Engine) exec(ctx context.Context, q *query) (Value, error) {
defer ng.gate.Done()
queueTimer.Stop()
ng.metrics.queryQueueTime.Observe(queueTimer.ElapsedTime().Seconds())
// Cancel when execution is done or an error was raised.
defer q.cancel()