diff --git a/.travis.yml b/.travis.yml
index afaf35449..7db0c057c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,6 +15,7 @@ env:
    - ZONE=sh001
    - DEPLOY_ENV=dev
    - DISCOVERY_NODES=127.0.0.1:7171
+   - HTTP_PERF=tcp://0.0.0.0:0
 
 # Skip the install step. Don't `go get` dependencies. Only build with the code
 # in vendor/
diff --git a/pkg/net/http/blademaster/server_test.go b/pkg/net/http/blademaster/server_test.go
index c4ab6f6f5..16c166980 100644
--- a/pkg/net/http/blademaster/server_test.go
+++ b/pkg/net/http/blademaster/server_test.go
@@ -20,7 +20,6 @@ import (
 var (
 	sonce sync.Once
 
-	SockAddr  = "localhost:18080"
 	curEngine atomic.Value
 )
 
@@ -50,16 +49,17 @@ func setupHandler(engine *Engine) {
 	})
 }
 
-func startServer() {
+func startServer(addr string) {
 	e := DefaultServer(nil)
 	setupHandler(e)
-	go e.Run(SockAddr)
+	go e.Run(addr)
 	curEngine.Store(e)
 	time.Sleep(time.Second)
 }
 
 func TestCriticality(t *testing.T) {
-	startServer()
+	addr := "localhost:18001"
+	startServer(addr)
 	defer shutdown()
 
 	tests := []*struct {
@@ -85,7 +85,7 @@ func TestCriticality(t *testing.T) {
 	}
 	client := &http.Client{}
 	for _, testCase := range tests {
-		req, err := http.NewRequest("GET", uri(SockAddr, testCase.path), nil)
+		req, err := http.NewRequest("GET", uri(addr, testCase.path), nil)
 		assert.NoError(t, err)
 		req.Header.Set("x-bm-metadata-criticality", string(testCase.crtl))
 		resp, err := client.Do(req)
@@ -98,7 +98,8 @@ func TestCriticality(t *testing.T) {
 }
 
 func TestNoneCriticality(t *testing.T) {
-	startServer()
+	addr := "localhost:18002"
+	startServer(addr)
 	defer shutdown()
 
 	tests := []*struct {
@@ -124,7 +125,7 @@ func TestNoneCriticality(t *testing.T) {
 	}
 	client := &http.Client{}
 	for _, testCase := range tests {
-		req, err := http.NewRequest("GET", uri(SockAddr, testCase.path), nil)
+		req, err := http.NewRequest("GET", uri(addr, testCase.path), nil)
 		assert.NoError(t, err)
 		req.Header.Set("x-bm-metadata-criticality", string(testCase.crtl))
 		resp, err := client.Do(req)
diff --git a/pkg/net/rpc/warden/balancer/p2c/p2c_test.go b/pkg/net/rpc/warden/balancer/p2c/p2c_test.go
index ae35d5ddb..45385262a 100644
--- a/pkg/net/rpc/warden/balancer/p2c/p2c_test.go
+++ b/pkg/net/rpc/warden/balancer/p2c/p2c_test.go
@@ -30,12 +30,12 @@ var extraDelay int64
 var extraWeight uint64
 
 func init() {
-	flag.IntVar(&serverNum, "snum", 5, "-snum 6")
-	flag.IntVar(&cliNum, "cnum", 5, "-cnum 12")
-	flag.IntVar(&concurrency, "concurrency", 5, "-cc 10")
+	flag.IntVar(&serverNum, "snum", 6, "-snum 6")
+	flag.IntVar(&cliNum, "cnum", 12, "-cnum 12")
+	flag.IntVar(&concurrency, "concurrency", 10, "-cc 10")
 	flag.Int64Var(&extraLoad, "exload", 3, "-exload 3")
-	flag.Int64Var(&extraDelay, "exdelay", 0, "-exdelay 250")
-	flag.Uint64Var(&extraWeight, "extraWeight", 0, "-exdelay 50")
+	flag.Int64Var(&extraDelay, "exdelay", 250, "-exdelay 250")
+	flag.Uint64Var(&extraWeight, "extraWeight", 50, "-exdelay 50")
 }
 
 type testSubConn struct {
diff --git a/pkg/net/trace/sample_test.go b/pkg/net/trace/sample_test.go
index f3543622b..7ccd01b36 100644
--- a/pkg/net/trace/sample_test.go
+++ b/pkg/net/trace/sample_test.go
@@ -21,8 +21,8 @@ func TestProbabilitySampling(t *testing.T) {
 				count++
 			}
 		}
-		if count < 80 || count > 120 {
-			t.Errorf("expect count between 80~120 get %d", count)
+		if count < 60 || count > 120 {
+			t.Errorf("expect count between 60~120 get %d", count)
 		}
 	})
 }
diff --git a/pkg/stat/sys/cpu/cpu.go b/pkg/stat/sys/cpu/cpu.go
index 2718536f3..92d8a5c78 100644
--- a/pkg/stat/sys/cpu/cpu.go
+++ b/pkg/stat/sys/cpu/cpu.go
@@ -15,6 +15,7 @@ var (
 	usage uint64
 )
 
+// CPU is cpu stat usage.
 type CPU interface {
 	Usage() (u uint64, e error)
 	Info() Info
@@ -26,7 +27,7 @@ func init() {
 	)
 	stats, err = newCgroupCPU()
 	if err != nil {
-		fmt.Printf("cgroup cpu init failed(%v),switch to psutil cpu\n", err)
+		// fmt.Printf("cgroup cpu init failed(%v),switch to psutil cpu\n", err)
 		stats, err = newPsutilCPU(interval)
 		if err != nil {
 			panic(fmt.Sprintf("cgroup cpu init failed!err:=%v", err))