Move benchmark to relevant package. Added bench task

Makefile

@@ -4,7 +4,10 @@ all: testdeps
 
 testdeps: testdata/redis/src/redis-server
 
-.PHONY: all test testdeps
+bench: testdeps
+	go test ./... -test.run=NONE -test.bench=. -test.benchmem
+
+.PHONY: all test testdeps bench
 
 testdata/redis:
 	mkdir -p $@

bench_test.go

@@ -2,15 +2,12 @@ package redis_test
 
 import (
 	"bytes"
-	"errors"
-	"net"
 	"testing"
 	"time"
 
 	redigo "github.com/garyburd/redigo/redis"
 
 	"gopkg.in/redis.v3"
-	"gopkg.in/redis.v3/internal/pool"
 )
 
 func benchmarkRedisClient(poolSize int) *redis.Client {
@@ -276,70 +273,3 @@ func BenchmarkZAdd(b *testing.B) {
 		}
 	})
 }
-
-func benchmarkPoolGetPut(b *testing.B, poolSize int) {
-	dial := func() (net.Conn, error) {
-		return &net.TCPConn{}, nil
-	}
-	pool := pool.NewConnPool(dial, poolSize, time.Second, 0)
-
-	b.ResetTimer()
-
-	b.RunParallel(func(pb *testing.PB) {
-		for pb.Next() {
-			conn, _, err := pool.Get()
-			if err != nil {
-				b.Fatalf("no error expected on pool.Get but received: %s", err.Error())
-			}
-			if err = pool.Put(conn); err != nil {
-				b.Fatalf("no error expected on pool.Put but received: %s", err.Error())
-			}
-		}
-	})
-}
-
-func BenchmarkPoolGetPut10Conns(b *testing.B) {
-	benchmarkPoolGetPut(b, 10)
-}
-
-func BenchmarkPoolGetPut100Conns(b *testing.B) {
-	benchmarkPoolGetPut(b, 100)
-}
-
-func BenchmarkPoolGetPut1000Conns(b *testing.B) {
-	benchmarkPoolGetPut(b, 1000)
-}
-
-func benchmarkPoolGetRemove(b *testing.B, poolSize int) {
-	dial := func() (net.Conn, error) {
-		return &net.TCPConn{}, nil
-	}
-	pool := pool.NewConnPool(dial, poolSize, time.Second, 0)
-	removeReason := errors.New("benchmark")
-
-	b.ResetTimer()
-
-	b.RunParallel(func(pb *testing.PB) {
-		for pb.Next() {
-			conn, _, err := pool.Get()
-			if err != nil {
-				b.Fatalf("no error expected on pool.Get but received: %s", err.Error())
-			}
-			if err = pool.Replace(conn, removeReason); err != nil {
-				b.Fatalf("no error expected on pool.Remove but received: %s", err.Error())
-			}
-		}
-	})
-}
-
-func BenchmarkPoolGetRemove10Conns(b *testing.B) {
-	benchmarkPoolGetRemove(b, 10)
-}
-
-func BenchmarkPoolGetRemove100Conns(b *testing.B) {
-	benchmarkPoolGetRemove(b, 100)
-}
-
-func BenchmarkPoolGetRemove1000Conns(b *testing.B) {
-	benchmarkPoolGetRemove(b, 1000)
-}

internal/pool/bench_test.go

@@ -0,0 +1,80 @@
+package pool_test
+
+import (
+	"errors"
+	"net"
+	"testing"
+	"time"
+
+	"gopkg.in/redis.v3/internal/pool"
+)
+
+func benchmarkPoolGetPut(b *testing.B, poolSize int) {
+	dial := func() (net.Conn, error) {
+		return &net.TCPConn{}, nil
+	}
+	pool := pool.NewConnPool(dial, poolSize, time.Second, 0)
+	pool.DialLimiter = nil
+
+	b.ResetTimer()
+
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			conn, _, err := pool.Get()
+			if err != nil {
+				b.Fatalf("no error expected on pool.Get but received: %s", err.Error())
+			}
+			if err = pool.Put(conn); err != nil {
+				b.Fatalf("no error expected on pool.Put but received: %s", err.Error())
+			}
+		}
+	})
+}
+
+func BenchmarkPoolGetPut10Conns(b *testing.B) {
+	benchmarkPoolGetPut(b, 10)
+}
+
+func BenchmarkPoolGetPut100Conns(b *testing.B) {
+	benchmarkPoolGetPut(b, 100)
+}
+
+func BenchmarkPoolGetPut1000Conns(b *testing.B) {
+	benchmarkPoolGetPut(b, 1000)
+}
+
+func benchmarkPoolGetReplace(b *testing.B, poolSize int) {
+	dial := func() (net.Conn, error) {
+		return &net.TCPConn{}, nil
+	}
+	pool := pool.NewConnPool(dial, poolSize, time.Second, 0)
+	pool.DialLimiter = nil
+
+	removeReason := errors.New("benchmark")
+
+	b.ResetTimer()
+
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			conn, _, err := pool.Get()
+			if err != nil {
+				b.Fatalf("no error expected on pool.Get but received: %s", err.Error())
+			}
+			if err = pool.Replace(conn, removeReason); err != nil {
+				b.Fatalf("no error expected on pool.Remove but received: %s", err.Error())
+			}
+		}
+	})
+}
+
+func BenchmarkPoolGetReplace10Conns(b *testing.B) {
+	benchmarkPoolGetReplace(b, 10)
+}
+
+func BenchmarkPoolGetReplace100Conns(b *testing.B) {
+	benchmarkPoolGetReplace(b, 100)
+}
+
+func BenchmarkPoolGetReplace1000Conns(b *testing.B) {
+	benchmarkPoolGetReplace(b, 1000)
+}

internal/pool/pool.go

@@ -44,11 +44,11 @@ type dialer func() (net.Conn, error)
 
 type ConnPool struct {
 	_dial       dialer
+	DialLimiter *ratelimit.RateLimiter
 
 	poolTimeout time.Duration
 	idleTimeout time.Duration
 
-	rl        *ratelimit.RateLimiter
 	conns     *connList
 	freeConns chan *Conn
 	stats     PoolStats
@@ -61,11 +61,11 @@ type ConnPool struct {
 func NewConnPool(dial dialer, poolSize int, poolTimeout, idleTimeout time.Duration) *ConnPool {
 	p := &ConnPool{
 		_dial:       dial,
+		DialLimiter: ratelimit.New(3*poolSize, time.Second),
 
 		poolTimeout: poolTimeout,
 		idleTimeout: idleTimeout,
 
-		rl:        ratelimit.New(3*poolSize, time.Second),
 		conns:     newConnList(poolSize),
 		freeConns: make(chan *Conn, poolSize),
 	}
@@ -128,7 +128,7 @@ func (p *ConnPool) wait() *Conn {
 }
 
 func (p *ConnPool) dial() (net.Conn, error) {
-	if p.rl.Limit() {
+	if p.DialLimiter != nil && p.DialLimiter.Limit() {
 		err := fmt.Errorf(
 			"redis: you open connections too fast (last_error=%q)",
 			p.loadLastErr(),