diff --git a/.travis.yml b/.travis.yml
index 691d930..db9fcfb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,9 @@ os:
   - osx
 language: go
 go:
+  - "master"
   - "1.11.x"
 install:
-  - go get "github.com/pkg/errors"
\ No newline at end of file
+  - go get "github.com/pkg/errors"
+script: go test -v -bench=. -benchmem ./...
+
diff --git a/checker_test.go b/checker_test.go
index 97eb310..daee22c 100644
--- a/checker_test.go
+++ b/checker_test.go
@@ -3,8 +3,10 @@ package tcp
 import (
 	"context"
 	"fmt"
+	"net"
 	"net/http"
 	"net/http/httptest"
+	"os"
 	"runtime"
 	"sync"
 	"testing"
@@ -12,10 +14,33 @@ import (
 )
 
 const (
-	AddrDead    = "127.0.0.1:1"
-	AddrTimeout = "10.255.255.1:80"
+	AddrDead = "127.0.0.1:1"
 )
 
+var timeoutAddrs = []string{
+	"10.255.255.1:80",
+	"10.0.0.0:1",
+}
+var AddrTimeout = timeoutAddrs[0]
+
+func _setAddrTimeout() {
+	for _, addr := range timeoutAddrs {
+		conn, err := net.DialTimeout("tcp", addr, time.Millisecond*50)
+		if err == nil {
+			conn.Close()
+			continue
+		}
+		if os.IsTimeout(err) {
+			AddrTimeout = addr
+			return
+		}
+	}
+}
+
+func init() {
+	_setAddrTimeout()
+}
+
 // assert calls t.Fatal if the result is false
 func assert(t *testing.T, result bool) {
 	if !result {
diff --git a/result_pipes_linux_test.go b/result_pipes_linux_test.go
index b4f57bf..2e8528a 100644
--- a/result_pipes_linux_test.go
+++ b/result_pipes_linux_test.go
@@ -26,7 +26,8 @@ func _benchmarkChecker(b *testing.B, c *Checker, addr string) {
 	b.ResetTimer()
 	b.RunParallel(func(pb *testing.PB) {
 		for pb.Next() {
-			c.CheckAddr(addr, time.Second)
+			// if timeout >= 1s, this func will run only once in the benchmark.
+			c.CheckAddr(addr, time.Millisecond*900)
 		}
 	})
 	b.StopTimer()