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app/vmselect/promql: add vm_slow_queries_total metric for counting slow queries

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The query is slow if its execution time exceeds `-search.logSlowQueryDuration`
This commit is contained in:
Aliaksandr Valialkin 2019-07-31 03:35:13 +03:00
parent 071a122119
commit c994fbf500
1 changed files with 3 additions and 0 deletions
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3
app/vmselect/promql/exec.go
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@ -16,6 +16,8 @@ import (
var logSlowQueryDuration = flag.Duration("search.logSlowQueryDuration", 5*time.Second, "Log queries with execution time exceeding this value. Zero disables slow query logging") var logSlowQueryDuration = flag.Duration("search.logSlowQueryDuration", 5*time.Second, "Log queries with execution time exceeding this value. Zero disables slow query logging")
var slowQueries = metrics.NewCounter(`vm_slow_queries_total`)
// ExpandWithExprs expands WITH expressions inside q and returns the resulting // ExpandWithExprs expands WITH expressions inside q and returns the resulting
// PromQL without WITH expressions. // PromQL without WITH expressions.
func ExpandWithExprs(q string) (string, error) { func ExpandWithExprs(q string) (string, error) {
@ -36,6 +38,7 @@ func Exec(ec *EvalConfig, q string, isFirstPointOnly bool) ([]netstorage.Result,
if d >= *logSlowQueryDuration { if d >= *logSlowQueryDuration {
logger.Infof("slow query according to -search.logSlowQueryDuration=%s: duration=%s, start=%d, end=%d, step=%d, accountID=%d, projectID=%d, query=%q", logger.Infof("slow query according to -search.logSlowQueryDuration=%s: duration=%s, start=%d, end=%d, step=%d, accountID=%d, projectID=%d, query=%q",
*logSlowQueryDuration, d, ec.Start/1000, ec.End/1000, ec.Step/1000, ec.AuthToken.AccountID, ec.AuthToken.ProjectID, q) *logSlowQueryDuration, d, ec.Start/1000, ec.End/1000, ec.Step/1000, ec.AuthToken.AccountID, ec.AuthToken.ProjectID, q)
slowQueries.Inc()
} }
}() }()
} }