From 237499ecedff442ce7e0b803c5296ce7f96a3636 Mon Sep 17 00:00:00 2001
From: Ilya Margolin <ilya@jimdo.com>
Date: Fri, 22 Jul 2016 17:19:00 +0200
Subject: [PATCH] Add a benchmark for handlePacket

---
 exporter_benchmark_test.go | 61 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 exporter_benchmark_test.go

diff --git a/exporter_benchmark_test.go b/exporter_benchmark_test.go
new file mode 100644
index 0000000..ad005da
--- /dev/null
+++ b/exporter_benchmark_test.go
@@ -0,0 +1,61 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"fmt"
+	"testing"
+)
+
+func benchmarkExporter(times int, b *testing.B) {
+	input := []string{
+		"foo1:2|c",
+		"foo2:3|g",
+		"foo3:200|ms",
+		"foo4:100|c|#tag1:bar,tag2:baz",
+		"foo5:100|c|#tag1:bar,#tag2:baz",
+		"foo6:100|c|#09digits:0,tag.with.dots:1",
+		"foo10:100|c|@0.1|#tag1:bar,#tag2:baz",
+		"foo11:100|c|@0.1|#tag1:foo:bar",
+		"foo15:200|ms:300|ms:5|c|@0.1:6|g\nfoo15a:1|c:5|ms",
+		"some_very_useful_metrics_with_quite_a_log_name:13|c",
+	}
+	bytesInput := make([]string, len(input)*times)
+	for run := 0; run < times; run++ {
+		for i := 0; i < len(input); i++ {
+			bytesInput[run*len(input)+i] = fmt.Sprintf("run%d%s", run, input[i])
+		}
+	}
+	for n := 0; n < b.N; n++ {
+		l := StatsDListener{}
+		// there are more events than input lines, need bigger buffer
+		events := make(chan Events, len(bytesInput)*times*2)
+
+		for i := 0; i < times; i++ {
+			for _, line := range bytesInput {
+				l.handlePacket([]byte(line), events)
+			}
+		}
+	}
+}
+
+func BenchmarkExporter1(b *testing.B) {
+	benchmarkExporter(1, b)
+}
+func BenchmarkExporter5(b *testing.B) {
+	benchmarkExporter(5, b)
+}
+func BenchmarkExporter50(b *testing.B) {
+	benchmarkExporter(50, b)
+}