Function benchmarkMetricVecWithLabelValues

prometheus/vec_test.go:980–1006

(b *testing.B, labels map[string][]string)

}

func benchmarkMetricVecWithLabelValues(b *testing.B, labels map[string][]string) {
	var keys []string
	for k := range labels { // Map order dependent, who cares though.
		keys = append(keys, k)
	}

	values := make([]string, len(labels)) // Value cache for permutations.
	vec := NewGaugeVec(
		GaugeOpts{
			Name: "test",
			Help: "helpless",
		},
		keys,
	)

	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		// Varies input across provide map entries based on key size.
		for j, k := range keys {
			candidates := labels[k]
			values[j] = candidates[i%len(candidates)]
		}

		vec.WithLabelValues(values...)
	}
}