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https://github.com/VictoriaMetrics/VictoriaMetrics.git
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91a8afa172
Method `metrics()` now pre-allocates slices for labels and results from query responses. This reduces the number of allocations on the hot path for instant requests. Signed-off-by: hagen1778 <roman@victoriametrics.com>
21 lines
488 B
Go
21 lines
488 B
Go
package datasource
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import (
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"encoding/json"
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"testing"
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)
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func BenchmarkMetrics(b *testing.B) {
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payload := []byte(`[{"metric":{"__name__":"vm_rows"},"value":[1583786142,"13763"]},{"metric":{"__name__":"vm_requests", "foo":"bar", "baz": "qux"},"value":[1583786140,"2000"]}]`)
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var pi promInstant
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if err := json.Unmarshal(payload, &pi.Result); err != nil {
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b.Fatalf(err.Error())
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}
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b.Run("Instant", func(b *testing.B) {
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for i := 0; i < b.N; i++ {
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_, _ = pi.metrics()
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}
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})
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}
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