Add benchmark for logger
diff --git a/logger_bench_test.go b/logger_bench_test.go
new file mode 100644
index 0000000..28a1a26
--- /dev/null
+++ b/logger_bench_test.go
@@ -0,0 +1,37 @@
+package logrus
+
+import (
+ "os"
+ "testing"
+)
+
+// smallFields is a small size data set for benchmarking
+var loggerFields = Fields{
+ "foo": "bar",
+ "baz": "qux",
+ "one": "two",
+ "three": "four",
+}
+
+func BenchmarkDummyLogger(b *testing.B) {
+ nullf, err := os.OpenFile("/dev/null", os.O_WRONLY, 0666)
+ if err != nil {
+ b.Fatalf("%v", err)
+ }
+ defer nullf.Close()
+ doLoggerBenchmark(b, nullf, &TextFormatter{DisableColors: true}, smallFields)
+}
+
+func doLoggerBenchmark(b *testing.B, out *os.File, formatter Formatter, fields Fields) {
+ logger := Logger{
+ Out: out,
+ Level: InfoLevel,
+ Formatter: formatter,
+ }
+ entry := logger.WithFields(fields)
+ b.RunParallel(func(pb *testing.PB) {
+ for pb.Next() {
+ entry.Info("aaa")
+ }
+ })
+}
