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Posted to commits@dubbo.apache.org by ge...@apache.org on 2021/07/09 07:34:10 UTC

[dubbo-getty] branch master updated: Ftr: delete session.handleLoop (#56)

This is an automated email from the ASF dual-hosted git repository.

georgehao pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/dubbo-getty.git


The following commit(s) were added to refs/heads/master by this push:
     new 168f412  Ftr: delete session.handleLoop (#56)
168f412 is described below

commit 168f412b5df6b4e452212626b41c15d613d6af47
Author: Xin.Zh <dr...@foxmail.com>
AuthorDate: Fri Jul 9 15:34:04 2021 +0800

    Ftr: delete session.handleLoop (#56)
    
    * delete session.handleLoop
    
    * fix error codes
    
    * fix unit test
    
    * feat: benckmark
    
    * feat: 添加压测程序
    
    * feat: remove no need info
    
    * feat: del exec file
    
    * feat: fix client's session
    
    * feat: update gomod
    
    * feat: fix imports
    
    * feat: update gomod
    
    * feat: change sessionTimerLoop to heartbeat
    
    * feat: go fmt
    
    * feat: update benchmark client send message
    
    * feat: remove loop_client unreachable code
    
    * increase grNum before starting goroutine
    
    * feat: format
    
    * feat: add dubbo-getty alias
    
    * feat: fix gettyUDPConn recv err
    
    Co-authored-by: watermelon <80...@qq.com>
    Co-authored-by: georgehao <ha...@gmail.com>
    Co-authored-by: wangoo <wo...@apache.org>
---
 benchmark/client/main.go        | 261 +++++++++++++++++
 benchmark/loop_client/main.go   | 207 ++++++++++++++
 benchmark/server/main.go        | 189 ++++++++++++
 client.go                       |  15 +-
 client_test.go                  |  56 ++--
 connection.go                   |  83 +++---
 demo/hello/tls/client/client.go |   2 +-
 demo/hello/tls/server/server.go |   5 +-
 go.mod                          |   8 +-
 go.sum                          | 618 +++++++++++++++++++++++++++++++++++++++-
 server.go                       |  12 +-
 session.go                      | 125 ++++----
 12 files changed, 1403 insertions(+), 178 deletions(-)

diff --git a/benchmark/client/main.go b/benchmark/client/main.go
new file mode 100644
index 0000000..596a19f
--- /dev/null
+++ b/benchmark/client/main.go
@@ -0,0 +1,261 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 (
+	"encoding/binary"
+	"errors"
+	"flag"
+	"fmt"
+	"log"
+	"net"
+	"sync"
+	"sync/atomic"
+	"time"
+)
+
+import (
+	getty "github.com/apache/dubbo-getty"
+	"github.com/dubbogo/gost/sync"
+	"github.com/montanaflynn/stats"
+)
+
+var (
+	concurrency = flag.Int("c", 1, "concurrency")
+	total       = flag.Int("n", 1, "total requests for all clients")
+	ip          = flag.String("ip", "127.0.0.1:8090", "server IP")
+	connections = flag.Int("conn", 1, "number of tcp connections")
+
+	taskPoolMode = flag.Bool("taskPool", false, "task pool mode")
+	taskPoolSize = flag.Int("task_pool_size", 2000, "task poll size")
+	pprofPort    = flag.Int("pprof_port", 65431, "pprof http port")
+)
+
+var taskPool gxsync.GenericTaskPool
+
+const (
+	CronPeriod      = 20e9
+	WritePkgTimeout = 1e8
+)
+
+func main() {
+	flag.Parse()
+
+	n := *concurrency
+	m := *total / n
+
+	log.Printf("Servers: %+v\n\n", *ip)
+	log.Printf("concurrency: %d\nrequests per client: %d\n\n", n, m)
+
+	var wg sync.WaitGroup
+	wg.Add(n * m)
+
+	d := make([][]int64, n, n)
+	var trans uint64
+	var transOK uint64
+
+	totalT := time.Now().UnixNano()
+	for i := 0; i < n; i++ {
+		dt := make([]int64, 0, m)
+		d = append(d, dt)
+
+		go func(ii int) {
+			client := getty.NewTCPClient(
+				getty.WithServerAddress(*ip),
+				getty.WithConnectionNumber(*connections),
+				getty.WithClientTaskPool(taskPool),
+			)
+
+			var tmpSession getty.Session
+			NewHelloClientSession := func(session getty.Session) (err error) {
+				pkgHandler := &PackageHandler{}
+				EventListener := &MessageHandler{}
+
+				EventListener.SessionOnOpen = func(session getty.Session) {
+					tmpSession = session
+				}
+
+				tcpConn, ok := session.Conn().(*net.TCPConn)
+				if !ok {
+					panic(fmt.Sprintf("newSession: %s, session.conn{%#v} is not tcp connection", session.Stat(), session.Conn()))
+				}
+
+				if err = tcpConn.SetNoDelay(true); err != nil {
+					return err
+				}
+				if err = tcpConn.SetKeepAlive(true); err != nil {
+					return err
+				}
+				if err = tcpConn.SetKeepAlivePeriod(10 * time.Second); err != nil {
+					return err
+				}
+				if err = tcpConn.SetReadBuffer(262144); err != nil {
+					return err
+				}
+				if err = tcpConn.SetWriteBuffer(524288); err != nil {
+					return err
+				}
+
+				session.SetName("hello")
+				session.SetMaxMsgLen(128 * 1024) // max message package length is 128k
+				session.SetReadTimeout(time.Second)
+				session.SetWriteTimeout(5 * time.Second)
+				session.SetCronPeriod(int(CronPeriod / 1e6))
+				session.SetWaitTime(time.Second)
+
+				session.SetPkgHandler(pkgHandler)
+				session.SetEventListener(EventListener)
+				return nil
+			}
+
+			client.RunEventLoop(NewHelloClientSession)
+
+			for j := 0; j < m; j++ {
+				atomic.AddUint64(&trans, 1)
+
+				t := time.Now().UnixNano()
+				msg := buildSendMsg()
+				_, _, err := tmpSession.WritePkg(msg, WritePkgTimeout)
+				if err != nil {
+					log.Printf("Err:session.WritePkg(session{%s}, error{%v}", tmpSession.Stat(), err)
+				}
+
+				atomic.AddUint64(&transOK, 1)
+
+				t = time.Now().UnixNano() - t
+				d[ii] = append(d[ii], t)
+
+				wg.Done()
+			}
+
+			client.Close()
+		}(i)
+	}
+
+	wg.Wait()
+
+	totalT = time.Now().UnixNano() - totalT
+	totalT = totalT / 1000000
+	log.Printf("took %d ms for %d requests", totalT, n*m)
+
+	totalD := make([]int64, 0, n*m)
+	for _, k := range d {
+		totalD = append(totalD, k...)
+	}
+
+	totalD2 := make([]float64, 0, n*m)
+	for _, k := range totalD {
+		totalD2 = append(totalD2, float64(k))
+	}
+
+	mean, _ := stats.Mean(totalD2)
+	median, _ := stats.Median(totalD2)
+	max, _ := stats.Max(totalD2)
+	min, _ := stats.Min(totalD2)
+	p99, _ := stats.Percentile(totalD2, 99.9)
+
+	log.Printf("sent     requests    : %d\n", n*m)
+	log.Printf("received requests    : %d\n", atomic.LoadUint64(&trans))
+	log.Printf("received requests_OK : %d\n", atomic.LoadUint64(&transOK))
+	log.Printf("throughput  (TPS)    : %d\n", int64(n*m)*1000/totalT)
+	log.Printf("mean: %.f ns, median: %.f ns, max: %.f ns, min: %.f ns, p99: %.f ns\n", mean, median, max, min, p99)
+	log.Printf("mean: %d ms, median: %d ms, max: %d ms, min: %d ms, p99: %d ms\n", int64(mean/1000000), int64(median/1000000), int64(max/1000000), int64(min/1000000), int64(p99/1000000))
+}
+
+type MessageHandler struct {
+	SessionOnOpen func(session getty.Session)
+}
+
+func (h *MessageHandler) OnOpen(session getty.Session) error {
+	log.Printf("OnOpen session{%s} open", session.Stat())
+	if h.SessionOnOpen != nil {
+		h.SessionOnOpen(session)
+	}
+	return nil
+}
+
+func (h *MessageHandler) OnError(session getty.Session, err error) {
+	log.Printf("OnError session{%s} got error{%v}, will be closed.", session.Stat(), err)
+}
+
+func (h *MessageHandler) OnClose(session getty.Session) {
+	log.Printf("hhf OnClose session{%s} is closing......", session.Stat())
+}
+
+func (h *MessageHandler) OnMessage(session getty.Session, pkg interface{}) {
+	log.Printf("OnMessage....")
+	s, ok := pkg.(string)
+	if !ok {
+		log.Printf("illegal package{%#v}", pkg)
+		return
+	}
+	log.Printf("OnMessage: %s", s)
+}
+
+func (h *MessageHandler) OnCron(session getty.Session) {
+	log.Printf("OnCron....")
+}
+
+type PackageHandler struct{}
+
+func (h *PackageHandler) Read(ss getty.Session, data []byte) (interface{}, int, error) {
+	dataLen := len(data)
+	if dataLen < 4 {
+		return nil, 0, nil
+	}
+
+	start := 0
+	pos := start + 4
+	pkgLen := int(binary.LittleEndian.Uint32(data[start:pos]))
+	if dataLen < pos+pkgLen {
+		return nil, pos + pkgLen, nil
+	}
+	start = pos
+
+	pos = start + pkgLen
+	s := string(data[start:pos])
+
+	return s, pos, nil
+}
+
+func (h *PackageHandler) Write(ss getty.Session, p interface{}) ([]byte, error) {
+	pkg, ok := p.(string)
+	if !ok {
+		log.Printf("illegal pkg:%+v", p)
+		return nil, errors.New("invalid package")
+	}
+
+	pkgLen := int32(len(pkg))
+	pkgStreams := make([]byte, 0, 4+len(pkg))
+
+	// pkg len
+	start := 0
+	pos := start + 4
+	binary.LittleEndian.PutUint32(pkgStreams[start:pos], uint32(pkgLen))
+	start = pos
+
+	// pkg
+	pos = start + int(pkgLen)
+	copy(pkgStreams[start:pos], pkg[:])
+
+	return pkgStreams[:pos], nil
+}
+
+func buildSendMsg() string {
+	return "Now we know what the itables look like, but where do they come from? Go's dynamic type conversions mean that it isn't reasonable for the compiler or linker to precompute all possible itables: there are too many (interface type, concrete type) pairs, and most won't be needed. Instead, the compiler generates a type description structure for each concrete type like Binary or int or func(map[int]string). Among other metadata, the type description structure contains a list of the met [...]
+}
diff --git a/benchmark/loop_client/main.go b/benchmark/loop_client/main.go
new file mode 100644
index 0000000..3ad1698
--- /dev/null
+++ b/benchmark/loop_client/main.go
@@ -0,0 +1,207 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 (
+	"encoding/binary"
+	"errors"
+	"flag"
+	"fmt"
+	"log"
+	"net"
+	"time"
+)
+
+import (
+	getty "github.com/apache/dubbo-getty"
+	"github.com/dubbogo/gost/sync"
+)
+
+var (
+	concurrency = flag.Int("c", 1, "concurrency")
+	total       = flag.Int("n", 1, "total requests for all clients")
+	ip          = flag.String("ip", "127.0.0.1:8090", "server IP")
+	connections = flag.Int("conn", 1, "number of tcp connections")
+
+	taskPoolMode = flag.Bool("taskPool", false, "task pool mode")
+	taskPoolSize = flag.Int("task_pool_size", 2000, "task poll size")
+	pprofPort    = flag.Int("pprof_port", 65431, "pprof http port")
+)
+
+var taskPool gxsync.GenericTaskPool
+
+const (
+	CronPeriod      = 20e9
+	WritePkgTimeout = 1e8
+)
+
+func main() {
+	flag.Parse()
+
+	n := *concurrency
+
+	log.Printf("Servers: %+v\n\n", *ip)
+	for i := 0; i < n; i++ {
+		go func(ii int) {
+			client := getty.NewTCPClient(
+				getty.WithServerAddress(*ip),
+				getty.WithConnectionNumber(*connections),
+				getty.WithClientTaskPool(taskPool),
+			)
+
+			var tmpSession getty.Session
+			NewHelloClientSession := func(session getty.Session) (err error) {
+				pkgHandler := &PackageHandler{}
+				EventListener := &MessageHandler{}
+
+				EventListener.SessionOnOpen = func(session getty.Session) {
+					tmpSession = session
+				}
+
+				tcpConn, ok := session.Conn().(*net.TCPConn)
+				if !ok {
+					panic(fmt.Sprintf("newSession: %s, session.conn{%#v} is not tcp connection", session.Stat(), session.Conn()))
+				}
+
+				if err = tcpConn.SetNoDelay(true); err != nil {
+					return err
+				}
+				if err = tcpConn.SetKeepAlive(true); err != nil {
+					return err
+				}
+				if err = tcpConn.SetKeepAlivePeriod(10 * time.Second); err != nil {
+					return err
+				}
+				if err = tcpConn.SetReadBuffer(262144); err != nil {
+					return err
+				}
+				if err = tcpConn.SetWriteBuffer(524288); err != nil {
+					return err
+				}
+
+				session.SetName("hello")
+				session.SetMaxMsgLen(128 * 1024) // max message package length is 128k
+				session.SetReadTimeout(time.Second)
+				session.SetWriteTimeout(5 * time.Second)
+				session.SetCronPeriod(int(CronPeriod / 1e6))
+				session.SetWaitTime(time.Second)
+
+				session.SetPkgHandler(pkgHandler)
+				session.SetEventListener(EventListener)
+				return nil
+			}
+
+			client.RunEventLoop(NewHelloClientSession)
+
+			for {
+				msg := buildSendMsg()
+				_, _, err := tmpSession.WritePkg(msg, WritePkgTimeout)
+				if err != nil {
+					log.Printf("Err:session.WritePkg(session{%s}, error{%v}", tmpSession.Stat(), err)
+					tmpSession.Close()
+				}
+			}
+		}(i)
+	}
+
+	c := make(chan int)
+	<-c
+}
+
+type MessageHandler struct {
+	SessionOnOpen func(session getty.Session)
+}
+
+func (h *MessageHandler) OnOpen(session getty.Session) error {
+	log.Printf("OnOpen session{%s} open", session.Stat())
+	if h.SessionOnOpen != nil {
+		h.SessionOnOpen(session)
+	}
+	return nil
+}
+
+func (h *MessageHandler) OnError(session getty.Session, err error) {
+	log.Printf("OnError session{%s} got error{%v}, will be closed.", session.Stat(), err)
+}
+
+func (h *MessageHandler) OnClose(session getty.Session) {
+	log.Printf("hhf OnClose session{%s} is closing......", session.Stat())
+}
+
+func (h *MessageHandler) OnMessage(session getty.Session, pkg interface{}) {
+	log.Printf("OnMessage....")
+	s, ok := pkg.(string)
+	if !ok {
+		log.Printf("illegal package{%#v}", pkg)
+		return
+	}
+	log.Printf("OnMessage: %s", s)
+}
+
+func (h *MessageHandler) OnCron(session getty.Session) {
+	log.Printf("OnCron....")
+}
+
+type PackageHandler struct{}
+
+func (h *PackageHandler) Read(ss getty.Session, data []byte) (interface{}, int, error) {
+	dataLen := len(data)
+	if dataLen < 4 {
+		return nil, 0, nil
+	}
+
+	start := 0
+	pos := start + 4
+	pkgLen := int(binary.LittleEndian.Uint32(data[start:pos]))
+	if dataLen < pos+pkgLen {
+		return nil, pos + pkgLen, nil
+	}
+	start = pos
+
+	pos = start + pkgLen
+	s := string(data[start:pos])
+
+	return s, pos, nil
+}
+
+func (h *PackageHandler) Write(ss getty.Session, p interface{}) ([]byte, error) {
+	pkg, ok := p.(string)
+	if !ok {
+		log.Printf("illegal pkg:%+v", p)
+		return nil, errors.New("invalid package")
+	}
+
+	pkgLen := int32(len(pkg))
+	pkgStreams := make([]byte, 0, 4+len(pkg))
+
+	// pkg len
+	start := 0
+	pos := start + 4
+	binary.LittleEndian.PutUint32(pkgStreams[start:pos], uint32(pkgLen))
+	start = pos
+
+	// pkg
+	pos = start + int(pkgLen)
+	copy(pkgStreams[start:pos], pkg[:])
+
+	return pkgStreams[:pos], nil
+}
+
+func buildSendMsg() string {
+	return "Now we know what the itables look like, but where do they come from? Go's dynamic type conversions mean that it isn't reasonable for the compiler or linker to precompute all possible itables: there are too many (interface type, concrete type) pairs, and most won't be needed. Instead, the compiler generates a type description structure for each concrete type like Binary or int or func(map[int]string). Among other metadata, the type description structure contains a list of the met [...]
+}
diff --git a/benchmark/server/main.go b/benchmark/server/main.go
new file mode 100644
index 0000000..a5655cf
--- /dev/null
+++ b/benchmark/server/main.go
@@ -0,0 +1,189 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 (
+	"encoding/binary"
+	"errors"
+	"flag"
+	"fmt"
+	"log"
+	"net"
+	"net/http"
+	_ "net/http/pprof"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+import (
+	getty "github.com/apache/dubbo-getty"
+	gxsync "github.com/dubbogo/gost/sync"
+)
+
+var (
+	taskPoolMode = flag.Bool("taskPool", false, "task pool mode")
+	taskPoolSize = flag.Int("task_pool_size", 2000, "task poll size")
+	pprofPort    = flag.Int("pprof_port", 65432, "pprof http port")
+)
+
+var taskPool gxsync.GenericTaskPool
+
+const CronPeriod = 20e9
+
+func main() {
+	flag.Parse()
+
+	go func() {
+		http.ListenAndServe(fmt.Sprintf(":%d", *pprofPort), nil)
+	}()
+
+	options := []getty.ServerOption{getty.WithLocalAddress(":8090")}
+
+	if *taskPoolMode {
+		taskPool = gxsync.NewTaskPoolSimple(*taskPoolSize)
+		options = append(options, getty.WithServerTaskPool(taskPool))
+	}
+
+	server := getty.NewTCPServer(options...)
+
+	go server.RunEventLoop(NewHelloServerSession)
+	log.Printf("getty server start, listening at: 8090")
+
+	signals := make(chan os.Signal, 1)
+	signal.Notify(signals, os.Interrupt, syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT)
+	<-signals
+	server.Close()
+}
+
+func NewHelloServerSession(session getty.Session) (err error) {
+	pkgHandler := &PackageHandler{}
+	EventListener := &MessageHandler{}
+
+	tcpConn, ok := session.Conn().(*net.TCPConn)
+	if !ok {
+		panic(fmt.Sprintf("newSession: %s, session.conn{%#v} is not tcp connection", session.Stat(), session.Conn()))
+	}
+
+	if err = tcpConn.SetNoDelay(true); err != nil {
+		return err
+	}
+	if err = tcpConn.SetKeepAlive(true); err != nil {
+		return err
+	}
+	if err = tcpConn.SetKeepAlivePeriod(10 * time.Second); err != nil {
+		return err
+	}
+	if err = tcpConn.SetReadBuffer(262144); err != nil {
+		return err
+	}
+	if err = tcpConn.SetWriteBuffer(524288); err != nil {
+		return err
+	}
+
+	session.SetName("hello")
+	session.SetMaxMsgLen(128 * 1024) // max message package length is 128k
+	session.SetReadTimeout(time.Second)
+	session.SetWriteTimeout(5 * time.Second)
+	session.SetCronPeriod(int(CronPeriod / 1e6))
+	session.SetWaitTime(time.Second)
+
+	session.SetPkgHandler(pkgHandler)
+	session.SetEventListener(EventListener)
+	return nil
+}
+
+type MessageHandler struct {
+	SessionOnOpen func(session getty.Session)
+}
+
+func (h *MessageHandler) OnOpen(session getty.Session) error {
+	log.Printf("OnOpen session{%s} open", session.Stat())
+	if h.SessionOnOpen != nil {
+		h.SessionOnOpen(session)
+	}
+	return nil
+}
+
+func (h *MessageHandler) OnError(session getty.Session, err error) {
+	log.Printf("OnError session{%s} got error{%v}, will be closed.", session.Stat(), err)
+}
+
+func (h *MessageHandler) OnClose(session getty.Session) {
+	log.Printf("OnClose session{%s} is closing......", session.Stat())
+}
+
+func (h *MessageHandler) OnMessage(session getty.Session, pkg interface{}) {
+	log.Printf("OnMessage....")
+	//s, ok := pkg.(string)
+	//if !ok {
+	//	log.Printf("illegal package{%#v}", pkg)
+	//	return
+	//}
+	//log.Printf("OnMessage: %s", s)
+}
+
+func (h *MessageHandler) OnCron(session getty.Session) {
+	log.Printf("OnCron....")
+}
+
+type PackageHandler struct{}
+
+func (h *PackageHandler) Read(ss getty.Session, data []byte) (interface{}, int, error) {
+	dataLen := len(data)
+	if dataLen < 4 {
+		return nil, 0, nil
+	}
+
+	start := 0
+	pos := start + 4
+	pkgLen := int(binary.LittleEndian.Uint32(data[start:pos]))
+	if dataLen < pos+pkgLen {
+		return nil, pos + pkgLen, nil
+	}
+	start = pos
+
+	pos = start + pkgLen
+	s := string(data[start:pos])
+
+	return s, pos, nil
+}
+
+func (h *PackageHandler) Write(ss getty.Session, p interface{}) ([]byte, error) {
+	pkg, ok := p.(string)
+	if !ok {
+		log.Printf("illegal pkg:%+v", p)
+		return nil, errors.New("invalid package")
+	}
+
+	pkgLen := int32(len(pkg))
+	pkgStreams := make([]byte, 0, 4+len(pkg))
+
+	// pkg len
+	start := 0
+	pos := start + 4
+	binary.LittleEndian.PutUint32(pkgStreams[start:pos], uint32(pkgLen))
+	start = pos
+
+	// pkg
+	pos = start + int(pkgLen)
+	copy(pkgStreams[start:pos], pkg[:])
+
+	return pkgStreams[:pos], nil
+}
diff --git a/client.go b/client.go
index 592590e..c03b3b1 100644
--- a/client.go
+++ b/client.go
@@ -34,6 +34,7 @@ import (
 	"github.com/dubbogo/gost/bytes"
 	"github.com/dubbogo/gost/net"
 	gxsync "github.com/dubbogo/gost/sync"
+	gxtime "github.com/dubbogo/gost/time"
 	"github.com/gorilla/websocket"
 	perrors "github.com/pkg/errors"
 )
@@ -168,7 +169,7 @@ func (c *client) dialTCP() Session {
 		}
 
 		log.Infof("net.DialTimeout(addr:%s, timeout:%v) = error:%+v", c.addr, connectTimeout, perrors.WithStack(err))
-		<-wheel.After(connectInterval)
+		<-gxtime.After(connectInterval)
 	}
 }
 
@@ -200,7 +201,7 @@ func (c *client) dialUDP() Session {
 		}
 		if err != nil {
 			log.Warnf("net.DialTimeout(addr:%s, timeout:%v) = error:%+v", c.addr, perrors.WithStack(err))
-			<-wheel.After(connectInterval)
+			<-gxtime.After(connectInterval)
 			continue
 		}
 
@@ -209,7 +210,7 @@ func (c *client) dialUDP() Session {
 		if length, err = conn.Write(connectPingPackage[:]); err != nil {
 			conn.Close()
 			log.Warnf("conn.Write(%s) = {length:%d, err:%+v}", string(connectPingPackage), length, perrors.WithStack(err))
-			<-wheel.After(connectInterval)
+			<-gxtime.After(connectInterval)
 			continue
 		}
 		conn.SetReadDeadline(time.Now().Add(1e9))
@@ -220,7 +221,7 @@ func (c *client) dialUDP() Session {
 		if err != nil {
 			log.Infof("conn{%#v}.Read() = {length:%d, err:%+v}", conn, length, perrors.WithStack(err))
 			conn.Close()
-			<-wheel.After(connectInterval)
+			<-gxtime.After(connectInterval)
 			continue
 		}
 		// if err == nil {
@@ -258,7 +259,7 @@ func (c *client) dialWS() Session {
 		}
 
 		log.Infof("websocket.dialer.Dial(addr:%s) = error:%+v", c.addr, perrors.WithStack(err))
-		<-wheel.After(connectInterval)
+		<-gxtime.After(connectInterval)
 	}
 }
 
@@ -336,7 +337,7 @@ func (c *client) dialWSS() Session {
 		}
 
 		log.Infof("websocket.dialer.Dial(addr:%s) = error:%+v", c.addr, perrors.WithStack(err))
-		<-wheel.After(connectInterval)
+		<-gxtime.After(connectInterval)
 	}
 }
 
@@ -443,7 +444,7 @@ func (c *client) reConnect() {
 		if maxTimes < times {
 			times = maxTimes
 		}
-		<-wheel.After(time.Duration(int64(times) * int64(interval)))
+		<-gxtime.After(time.Duration(int64(times) * int64(interval)))
 	}
 }
 
diff --git a/client_test.go b/client_test.go
index 05b22ca..bcced36 100644
--- a/client_test.go
+++ b/client_test.go
@@ -24,13 +24,11 @@ import (
 	"os"
 	"strconv"
 	"sync"
-	"sync/atomic"
 	"testing"
 	"time"
 )
 
 import (
-	perrors "github.com/pkg/errors"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -96,7 +94,6 @@ func newSessionCallback(session Session, handler *MessageHandler) error {
 }
 
 func TestTCPClient(t *testing.T) {
-	assert.NotNil(t, GetTimeWheel())
 	listenLocalServer := func() (net.Listener, error) {
 		listener, err := net.Listen("tcp", ":0")
 		if err != nil {
@@ -135,31 +132,39 @@ func TestTCPClient(t *testing.T) {
 	ss.SetCompressType(CompressNone)
 	conn := ss.(*session).Connection.(*gettyTCPConn)
 	assert.True(t, conn.compress == CompressNone)
-	beforeWriteBytes := atomic.LoadUint32(&conn.writeBytes)
-	beforeWritePkgNum := atomic.LoadUint32(&conn.writePkgNum)
+	beforeWriteBytes := conn.writeBytes
+	beforeWritePkgNum := conn.writePkgNum
 	l, err := conn.send([]byte("hello"))
 	assert.Nil(t, err)
 	assert.True(t, l == 5)
-	assert.Equal(t, beforeWritePkgNum+1, atomic.LoadUint32(&conn.writePkgNum))
-	assert.Equal(t, beforeWriteBytes+5, atomic.LoadUint32(&conn.writeBytes))
+	beforeWritePkgNum.Add(1)
+	beforeWriteBytes.Add(5)
+	assert.Equal(t, beforeWritePkgNum, conn.writePkgNum)
+	assert.Equal(t, beforeWriteBytes, conn.writeBytes)
 	l, err = ss.WriteBytes([]byte("hello"))
 	assert.Nil(t, err)
 	assert.True(t, l == 5)
-	assert.Equal(t, beforeWriteBytes+10, atomic.LoadUint32(&conn.writeBytes))
-	assert.Equal(t, beforeWritePkgNum+2, atomic.LoadUint32(&conn.writePkgNum))
+	beforeWriteBytes.Add(5)
+	beforeWritePkgNum.Add(1)
+	assert.Equal(t, beforeWriteBytes, conn.writeBytes)
+	assert.Equal(t, beforeWritePkgNum, conn.writePkgNum)
 	var pkgs [][]byte
 	pkgs = append(pkgs, []byte("hello"), []byte("hello"))
 	l, err = conn.send(pkgs)
 	assert.Nil(t, err)
 	assert.True(t, l == 10)
-	assert.Equal(t, beforeWritePkgNum+4, atomic.LoadUint32(&conn.writePkgNum))
-	assert.Equal(t, beforeWriteBytes+20, atomic.LoadUint32(&conn.writeBytes))
+	beforeWritePkgNum.Add(2)
+	beforeWriteBytes.Add(10)
+	assert.Equal(t, beforeWritePkgNum, conn.writePkgNum)
+	assert.Equal(t, beforeWriteBytes, conn.writeBytes)
 	ss.SetCompressType(CompressSnappy)
 	l, err = ss.WriteBytesArray(pkgs...)
 	assert.Nil(t, err)
 	assert.True(t, l == 10)
-	assert.Equal(t, beforeWritePkgNum+6, atomic.LoadUint32(&conn.writePkgNum))
-	assert.Equal(t, beforeWriteBytes+30, atomic.LoadUint32(&conn.writeBytes))
+	beforeWritePkgNum.Add(2)
+	beforeWriteBytes.Add(10)
+	assert.Equal(t, beforeWritePkgNum, conn.writePkgNum)
+	assert.Equal(t, beforeWriteBytes, conn.writeBytes)
 	assert.True(t, conn.compress == CompressSnappy)
 
 	clt.Close()
@@ -208,7 +213,7 @@ func TestUDPClient(t *testing.T) {
 	assert.True(t, sendLen == 0)
 	assert.True(t, totalLen == 0)
 	totalLen, sendLen, err = ss.WritePkg([]byte("hello"), 0)
-	assert.NotNil(t, perrors.Cause(err))
+	assert.NotNil(t, err)
 	assert.True(t, sendLen == 0)
 	assert.True(t, totalLen == 0)
 	l, err := ss.WriteBytes([]byte("hello"))
@@ -236,14 +241,16 @@ func TestUDPClient(t *testing.T) {
 	_, err = udpConn.send(udpCtx)
 	assert.NotNil(t, err)
 	udpCtx.Pkg = []byte("hello")
-	beforeWriteBytes := atomic.LoadUint32(&udpConn.writeBytes)
+	beforeWriteBytes := udpConn.writeBytes
 	_, err = udpConn.send(udpCtx)
-	assert.Equal(t, beforeWriteBytes+5, atomic.LoadUint32(&udpConn.writeBytes))
+	beforeWriteBytes.Add(5)
+	assert.Equal(t, beforeWriteBytes, udpConn.writeBytes)
 	assert.Nil(t, err)
 
-	beforeWritePkgNum := atomic.LoadUint32(&udpConn.writePkgNum)
+	beforeWritePkgNum := udpConn.writePkgNum
 	totalLen, sendLen, err = ss.WritePkg(udpCtx, 0)
-	assert.Equal(t, beforeWritePkgNum+1, atomic.LoadUint32(&udpConn.writePkgNum))
+	beforeWritePkgNum.Add(1)
+	assert.Equal(t, beforeWritePkgNum, udpConn.writePkgNum)
 	assert.Nil(t, err)
 	assert.True(t, sendLen == 0)
 	assert.True(t, totalLen == 0)
@@ -297,19 +304,22 @@ func TestNewWSClient(t *testing.T) {
 	l, err := conn.send("hello")
 	assert.NotNil(t, err)
 	assert.True(t, l == 0)
-	beforeWriteBytes := atomic.LoadUint32(&conn.writeBytes)
+	beforeWriteBytes := conn.writeBytes
 	_, err = conn.send([]byte("hello"))
 	assert.Nil(t, err)
-	assert.Equal(t, beforeWriteBytes+5, atomic.LoadUint32(&conn.writeBytes))
-	beforeWritePkgNum := atomic.LoadUint32(&conn.writePkgNum)
+	beforeWriteBytes.Add(5)
+	assert.Equal(t, beforeWriteBytes, conn.writeBytes)
+	beforeWritePkgNum := conn.writePkgNum
 	l, err = ss.WriteBytes([]byte("hello"))
 	assert.Nil(t, err)
 	assert.True(t, l == 5)
-	assert.Equal(t, beforeWritePkgNum+1, atomic.LoadUint32(&conn.writePkgNum))
+	beforeWritePkgNum.Add(1)
+	assert.Equal(t, beforeWritePkgNum, conn.writePkgNum)
 	l, err = ss.WriteBytesArray([]byte("hello"), []byte("hello"))
 	assert.Nil(t, err)
 	assert.True(t, l == 10)
-	assert.Equal(t, beforeWritePkgNum+3, atomic.LoadUint32(&conn.writePkgNum))
+	beforeWritePkgNum.Add(2)
+	assert.Equal(t, beforeWritePkgNum, conn.writePkgNum)
 	err = conn.writePing()
 	assert.Nil(t, err)
 
diff --git a/connection.go b/connection.go
index 1e285b7..45e15b1 100644
--- a/connection.go
+++ b/connection.go
@@ -24,33 +24,33 @@ import (
 	"io"
 	"net"
 	"sync"
-	"sync/atomic"
 	"time"
 
 	"github.com/golang/snappy"
 	"github.com/gorilla/websocket"
 	perrors "github.com/pkg/errors"
+	uatomic "go.uber.org/atomic"
 )
 
-var launchTime = time.Now() // ErrInvalidConnection = perrors.New("connection has been closed.")
+var launchTime = time.Now()
 
 // ///////////////////////////////////////
 // getty connection
 // ///////////////////////////////////////
 
-var connID uint32
+var connID uatomic.Uint32
 
 type gettyConn struct {
 	id            uint32
 	compress      CompressType
 	padding1      uint8
 	padding2      uint16
-	readBytes     uint32        // read bytes
-	writeBytes    uint32        // write bytes
-	readPkgNum    uint32        // send pkg number
-	writePkgNum   uint32        // recv pkg number
-	active        int64         // last active, in milliseconds
-	rTimeout      time.Duration // network current limiting
+	readBytes     uatomic.Uint32 // read bytes
+	writeBytes    uatomic.Uint32 // write bytes
+	readPkgNum    uatomic.Uint32 // send pkg number
+	writePkgNum   uatomic.Uint32 // recv pkg number
+	active        uatomic.Int64  // last active, in milliseconds
+	rTimeout      time.Duration  // network current limiting
 	wTimeout      time.Duration
 	rLastDeadline int64  // lastest network read time
 	wLastDeadline int64  // lastest network write time
@@ -72,19 +72,19 @@ func (c *gettyConn) RemoteAddr() string {
 }
 
 func (c *gettyConn) incReadPkgNum() {
-	atomic.AddUint32(&c.readPkgNum, 1)
+	c.readPkgNum.Add(1)
 }
 
 func (c *gettyConn) incWritePkgNum() {
-	atomic.AddUint32(&c.writePkgNum, 1)
+	c.writePkgNum.Add(1)
 }
 
 func (c *gettyConn) UpdateActive() {
-	atomic.StoreInt64(&(c.active), int64(time.Since(launchTime)))
+	c.active.Store(int64(time.Since(launchTime)))
 }
 
 func (c *gettyConn) GetActive() time.Time {
-	return launchTime.Add(time.Duration(atomic.LoadInt64(&(c.active))))
+	return launchTime.Add(time.Duration(c.active.Load()))
 }
 
 func (c *gettyConn) send(interface{}) (int, error) {
@@ -165,7 +165,7 @@ func newGettyTCPConn(conn net.Conn) *gettyTCPConn {
 		reader: io.Reader(conn),
 		writer: io.Writer(conn),
 		gettyConn: gettyConn{
-			id:       atomic.AddUint32(&connID, 1),
+			id:       connID.Add(1),
 			rTimeout: netIOTimeout,
 			wTimeout: netIOTimeout,
 			local:    localAddr,
@@ -249,10 +249,8 @@ func (t *gettyTCPConn) recv(p []byte) (int, error) {
 	}
 
 	length, err = t.reader.Read(p)
-	// log.Debugf("now:%s, length:%d, err:%v", currentTime, length, err)
-	atomic.AddUint32(&t.readBytes, uint32(length))
+	t.readBytes.Add(uint32(length))
 	return length, perrors.WithStack(err)
-	// return length, err
 }
 
 // tcp connection write
@@ -271,7 +269,7 @@ func (t *gettyTCPConn) send(pkg interface{}) (int, error) {
 		// of the last write deadline exceeded.
 		// See https://github.com/golang/go/issues/15133 for details.
 		currentTime = time.Now()
-		if currentTime.Unix() - t.wLastDeadline > int64(t.wTimeout >> 2) {
+		if currentTime.Unix()-t.wLastDeadline > int64(t.wTimeout>>2) {
 			if err = t.conn.SetWriteDeadline(currentTime.Add(t.wTimeout)); err != nil {
 				return 0, perrors.WithStack(err)
 			}
@@ -283,8 +281,8 @@ func (t *gettyTCPConn) send(pkg interface{}) (int, error) {
 		netBuf := net.Buffers(buffers)
 		lg, err = netBuf.WriteTo(t.conn)
 		if err == nil {
-			atomic.AddUint32(&t.writeBytes, (uint32)(lg))
-			atomic.AddUint32(&t.writePkgNum, (uint32)(len(buffers)))
+			t.writeBytes.Add((uint32)(lg))
+			t.writePkgNum.Add((uint32)(len(buffers)))
 		}
 		log.Debugf("localAddr: %s, remoteAddr:%s, now:%s, length:%d, err:%s",
 			t.conn.LocalAddr(), t.conn.RemoteAddr(), currentTime, length, err)
@@ -294,10 +292,10 @@ func (t *gettyTCPConn) send(pkg interface{}) (int, error) {
 	if p, ok = pkg.([]byte); ok {
 		length, err = t.writer.Write(p)
 		if err == nil {
-			atomic.AddUint32(&t.writeBytes, (uint32)(len(p)))
-			atomic.AddUint32(&t.writePkgNum, 1)
+			t.writeBytes.Add((uint32)(len(p)))
+			t.writePkgNum.Add(1)
 		}
-		log.Debugf("localAddr: %s, remoteAddr:%s, now:%s, length:%d, err:%s",
+		log.Debugf("localAddr: %s, remoteAddr:%s, now:%s, length:%d, err:%v",
 			t.conn.LocalAddr(), t.conn.RemoteAddr(), currentTime, length, err)
 		return length, perrors.WithStack(err)
 	}
@@ -365,7 +363,7 @@ func newGettyUDPConn(conn *net.UDPConn) *gettyUDPConn {
 	return &gettyUDPConn{
 		conn: conn,
 		gettyConn: gettyConn{
-			id:       atomic.AddUint32(&connID, 1),
+			id:       connID.Add(1),
 			rTimeout: netIOTimeout,
 			wTimeout: netIOTimeout,
 			local:    localAddr,
@@ -387,33 +385,25 @@ func (u *gettyUDPConn) SetCompressType(c CompressType) {
 
 // udp connection read
 func (u *gettyUDPConn) recv(p []byte) (int, *net.UDPAddr, error) {
-	var (
-		err         error
-		currentTime time.Time
-		length      int
-		addr        *net.UDPAddr
-	)
-
 	if u.rTimeout > 0 {
 		// Optimization: update read deadline only if more than 25%
 		// of the last read deadline exceeded.
 		// See https://github.com/golang/go/issues/15133 for details.
-		currentTime = time.Now()
-		if currentTime.Unix() - u.rLastDeadline > int64(u.rTimeout >> 2) {
-			if err = u.conn.SetReadDeadline(currentTime.Add(u.rTimeout)); err != nil {
+		currentTime := time.Now()
+		if currentTime.Unix()-u.rLastDeadline > int64(u.rTimeout>>2) {
+			if err := u.conn.SetReadDeadline(currentTime.Add(u.rTimeout)); err != nil {
 				return 0, nil, perrors.WithStack(err)
 			}
 			u.rLastDeadline = currentTime.Unix()
 		}
 	}
 
-	length, addr, err = u.conn.ReadFromUDP(p) // connected udp also can get return @addr
-	log.Debugf("ReadFromUDP() = {length:%d, peerAddr:%s, error:%v}", length, addr, err)
+	length, addr, err := u.conn.ReadFromUDP(p) // connected udp also can get return @addr
+	log.Debugf("ReadFromUDP(p:%d) = {length:%d, peerAddr:%s, error:%v}", len(p), length, addr, err)
 	if err == nil {
-		atomic.AddUint32(&u.readBytes, uint32(length))
+		u.readBytes.Add(uint32(length))
 	}
 
-	// return length, addr, err
 	return length, addr, perrors.WithStack(err)
 }
 
@@ -447,7 +437,7 @@ func (u *gettyUDPConn) send(udpCtx interface{}) (int, error) {
 		// of the last write deadline exceeded.
 		// See https://github.com/golang/go/issues/15133 for details.
 		currentTime = time.Now()
-		if currentTime.Unix() - u.wLastDeadline > int64(u.wTimeout >> 2) {
+		if currentTime.Unix()-u.wLastDeadline > int64(u.wTimeout>>2) {
 			if err = u.conn.SetWriteDeadline(currentTime.Add(u.wTimeout)); err != nil {
 				return 0, perrors.WithStack(err)
 			}
@@ -456,8 +446,8 @@ func (u *gettyUDPConn) send(udpCtx interface{}) (int, error) {
 	}
 
 	if length, _, err = u.conn.WriteMsgUDP(buf, nil, peerAddr); err == nil {
-		atomic.AddUint32(&u.writeBytes, (uint32)(len(buf)))
-		atomic.AddUint32(&u.writePkgNum, 1)
+		u.writeBytes.Add((uint32)(len(buf)))
+		u.writePkgNum.Add(1)
 	}
 	log.Debugf("WriteMsgUDP(peerAddr:%s) = {length:%d, error:%v}", peerAddr, length, err)
 
@@ -498,7 +488,7 @@ func newGettyWSConn(conn *websocket.Conn) *gettyWSConn {
 	gettyWSConn := &gettyWSConn{
 		conn: conn,
 		gettyConn: gettyConn{
-			id:       atomic.AddUint32(&connID, 1),
+			id:       connID.Add(1),
 			rTimeout: netIOTimeout,
 			wTimeout: netIOTimeout,
 			local:    localAddr,
@@ -551,7 +541,7 @@ func (w *gettyWSConn) recv() ([]byte, error) {
 	// gorilla/websocket/conn.go:NextReader will always fail when got a timeout error.
 	_, b, e := w.conn.ReadMessage() // the first return value is message type.
 	if e == nil {
-		atomic.AddUint32(&w.readBytes, (uint32)(len(b)))
+		w.readBytes.Add((uint32)(len(b)))
 	} else {
 		if websocket.IsUnexpectedCloseError(e, websocket.CloseGoingAway) {
 			log.Warnf("websocket unexpected close error: %v", e)
@@ -559,7 +549,6 @@ func (w *gettyWSConn) recv() ([]byte, error) {
 	}
 
 	return b, perrors.WithStack(e)
-	// return b, e
 }
 
 func (w *gettyWSConn) updateWriteDeadline() error {
@@ -573,7 +562,7 @@ func (w *gettyWSConn) updateWriteDeadline() error {
 		// of the last write deadline exceeded.
 		// See https://github.com/golang/go/issues/15133 for details.
 		currentTime = time.Now()
-		if currentTime.Unix() - w.wLastDeadline > int64(w.wTimeout >> 2) {
+		if currentTime.Unix()-w.wLastDeadline > int64(w.wTimeout>>2) {
 			if err = w.conn.SetWriteDeadline(currentTime.Add(w.wTimeout)); err != nil {
 				return perrors.WithStack(err)
 			}
@@ -598,8 +587,8 @@ func (w *gettyWSConn) send(pkg interface{}) (int, error) {
 
 	w.updateWriteDeadline()
 	if err = w.conn.WriteMessage(websocket.BinaryMessage, p); err == nil {
-		atomic.AddUint32(&w.writeBytes, (uint32)(len(p)))
-		atomic.AddUint32(&w.writePkgNum, 1)
+		w.writeBytes.Add((uint32)(len(p)))
+		w.writePkgNum.Add(1)
 	}
 	return len(p), perrors.WithStack(err)
 }
diff --git a/demo/hello/tls/client/client.go b/demo/hello/tls/client/client.go
index c69b90d..ad3c52d 100644
--- a/demo/hello/tls/client/client.go
+++ b/demo/hello/tls/client/client.go
@@ -23,11 +23,11 @@ import (
 )
 
 import (
-	"github.com/apache/dubbo-getty"
 	"github.com/dubbogo/gost/sync"
 )
 
 import (
+	"github.com/apache/dubbo-getty"
 	"github.com/apache/dubbo-getty/demo/hello"
 	tls "github.com/apache/dubbo-getty/demo/hello/tls"
 	"github.com/apache/dubbo-getty/demo/util"
diff --git a/demo/hello/tls/server/server.go b/demo/hello/tls/server/server.go
index 85a0be7..1f9f637 100644
--- a/demo/hello/tls/server/server.go
+++ b/demo/hello/tls/server/server.go
@@ -20,16 +20,15 @@ package main
 import (
 	"flag"
 	"path/filepath"
-
-	tls "github.com/apache/dubbo-getty/demo/hello/tls"
 )
 
 import (
-	"github.com/apache/dubbo-getty"
 	gxsync "github.com/dubbogo/gost/sync"
 )
 
 import (
+	"github.com/apache/dubbo-getty"
+	tls "github.com/apache/dubbo-getty/demo/hello/tls"
 	"github.com/apache/dubbo-getty/demo/util"
 )
 
diff --git a/go.mod b/go.mod
index 6dd2917..8b24c74 100644
--- a/go.mod
+++ b/go.mod
@@ -3,10 +3,12 @@ module github.com/apache/dubbo-getty
 go 1.14
 
 require (
-	github.com/dubbogo/gost v1.10.1
+	github.com/dubbogo/gost v1.11.12
 	github.com/golang/snappy v0.0.1
 	github.com/gorilla/websocket v1.4.2
+	github.com/montanaflynn/stats v0.6.6
 	github.com/pkg/errors v0.9.1
-	github.com/stretchr/testify v1.6.1
-	go.uber.org/zap v1.15.0
+	github.com/stretchr/testify v1.7.0
+	go.uber.org/atomic v1.7.0
+	go.uber.org/zap v1.16.0
 )
diff --git a/go.sum b/go.sum
index 175c5ae..e8ed596 100644
--- a/go.sum
+++ b/go.sum
@@ -1,78 +1,668 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
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+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
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diff --git a/server.go b/server.go
index 9f5e586..cff0869 100644
--- a/server.go
+++ b/server.go
@@ -27,21 +27,23 @@ import (
 	"net/http"
 	"strings"
 	"sync"
-	"sync/atomic"
 	"time"
 )
 
 import (
 	gxnet "github.com/dubbogo/gost/net"
 	gxsync "github.com/dubbogo/gost/sync"
+	gxtime "github.com/dubbogo/gost/time"
 	"github.com/gorilla/websocket"
 	perrors "github.com/pkg/errors"
+	uatomic "go.uber.org/atomic"
 )
 
 var (
 	errSelfConnect        = perrors.New("connect self!")
 	serverFastFailTimeout = time.Second * 1
-	serverID              = EndPointID(0)
+
+	serverID uatomic.Int32
 )
 
 type server struct {
@@ -69,7 +71,7 @@ func (s *server) init(opts ...ServerOption) {
 
 func newServer(t EndPointType, opts ...ServerOption) *server {
 	s := &server{
-		endPointID:   atomic.AddInt32(&serverID, 1),
+		endPointID:   serverID.Add(1),
 		endPointType: t,
 		done:         make(chan struct{}),
 	}
@@ -264,11 +266,11 @@ func (s *server) runTcpEventLoop(newSession NewSessionCallback) {
 		)
 		for {
 			if s.IsClosed() {
-				log.Warnf("server{%s} stop accepting client connect request.", s.addr)
+				log.Infof("server{%s} stop accepting client connect request.", s.addr)
 				return
 			}
 			if delay != 0 {
-				<-wheel.After(delay)
+				<-gxtime.After(delay)
 			}
 			client, err = s.accept(newSession)
 			if err != nil {
diff --git a/session.go b/session.go
index ac0554d..7b1549c 100644
--- a/session.go
+++ b/session.go
@@ -25,7 +25,6 @@ import (
 	"net"
 	"runtime"
 	"sync"
-	"sync/atomic"
 	"time"
 )
 
@@ -36,6 +35,7 @@ import (
 
 	"github.com/gorilla/websocket"
 	perrors "github.com/pkg/errors"
+	uatomic "go.uber.org/atomic"
 )
 
 const (
@@ -58,16 +58,11 @@ const (
 // session
 /////////////////////////////////////////
 
-var wheel *gxtime.Wheel
+var defaultTimerWheel *gxtime.TimerWheel
 
 func init() {
-	span := 100e6 // 100ms
-	buckets := MaxWheelTimeSpan / span
-	wheel = gxtime.NewWheel(time.Duration(span), int(buckets)) // wheel longest span is 15 minute
-}
-
-func GetTimeWheel() *gxtime.Wheel {
-	return wheel
+	gxtime.InitDefaultTimerWheel()
+	defaultTimerWheel = gxtime.GetDefaultTimerWheel()
 }
 
 // getty base session
@@ -99,9 +94,7 @@ type session struct {
 	attrs *gxcontext.ValuesContext
 
 	// goroutines sync
-	grNum int32
-	// read goroutines done signal
-	rDone chan struct{}
+	grNum uatomic.Int32
 	lock  sync.RWMutex
 }
 
@@ -120,7 +113,6 @@ func newSession(endPoint EndPoint, conn Connection) *session {
 		done:  make(chan struct{}),
 		wait:  pendingDuration,
 		attrs: gxcontext.NewValuesContext(context.Background()),
-		rDone: make(chan struct{}),
 	}
 
 	ss.Connection.setSession(ss)
@@ -162,7 +154,6 @@ func (s *session) Reset() {
 		period: period,
 		wait:   pendingDuration,
 		attrs:  gxcontext.NewValuesContext(context.Background()),
-		rDone:  make(chan struct{}),
 	}
 }
 
@@ -212,10 +203,10 @@ func (s *session) Stat() string {
 	return fmt.Sprintf(
 		outputFormat,
 		s.sessionToken(),
-		atomic.LoadUint32(&(conn.readBytes)),
-		atomic.LoadUint32(&(conn.writeBytes)),
-		atomic.LoadUint32(&(conn.readPkgNum)),
-		atomic.LoadUint32(&(conn.writePkgNum)),
+		conn.readBytes.Load(),
+		conn.writeBytes.Load(),
+		conn.readPkgNum.Load(),
+		conn.writePkgNum.Load(),
 	)
 }
 
@@ -460,6 +451,33 @@ func (s *session) WriteBytesArray(pkgs ...[]byte) (int, error) {
 	return wlg, nil
 }
 
+func heartbeat(_ gxtime.TimerID, _ time.Time, arg interface{}) error {
+	ss, _ := arg.(*session)
+	if ss == nil || ss.IsClosed() {
+		return ErrSessionClosed
+	}
+
+	f := func() {
+		wsConn, wsFlag := ss.Connection.(*gettyWSConn)
+		if wsFlag {
+			err := wsConn.writePing()
+			if err != nil {
+				log.Warnf("wsConn.writePing() = error:%+v", perrors.WithStack(err))
+			}
+		}
+
+		ss.listener.OnCron(ss)
+	}
+
+	// if enable task pool, run @f asynchronously.
+	if taskPool := ss.EndPoint().GetTaskPool(); taskPool != nil {
+		taskPool.AddTaskAlways(f)
+		return nil
+	}
+	f()
+	return nil
+}
+
 // func (s *session) RunEventLoop() {
 func (s *session) run() {
 	if s.Connection == nil || s.listener == nil || s.writer == nil {
@@ -477,56 +495,13 @@ func (s *session) run() {
 		return
 	}
 
-	// start read/write gr
-	atomic.AddInt32(&(s.grNum), 2)
-	go s.handleLoop()
-	go s.handlePackage()
-}
-
-func (s *session) handleLoop() {
-	var (
-		wsFlag  bool
-		wsConn  *gettyWSConn
-		counter gxtime.CountWatch
-	)
-
-	defer func() {
-		if r := recover(); r != nil {
-			const size = 64 << 10
-			rBuf := make([]byte, size)
-			rBuf = rBuf[:runtime.Stack(rBuf, false)]
-			log.Errorf("[session.handleLoop] panic session %s: err=%s\n%s", s.sessionToken(), r, rBuf)
-		}
-
-		grNum := atomic.AddInt32(&(s.grNum), -1)
-		s.listener.OnClose(s)
-		log.Infof("%s, [session.handleLoop] goroutine exit now, left gr num %d", s.Stat(), grNum)
-		s.gc()
-	}()
-
-	wsConn, wsFlag = s.Connection.(*gettyWSConn)
-LOOP:
-	for {
-		select {
-		case <-s.done:
-			// this case branch assure the (session)handleLoop gr will exit after (session)handlePackage gr.
-			<-s.rDone
-			counter.Start()
-			if counter.Count() > s.wait.Nanoseconds() {
-				log.Infof("%s, [session.handleLoop] got done signal ", s.Stat())
-				break LOOP
-			}
-
-		case <-wheel.After(s.period):
-			if wsFlag {
-				err := wsConn.writePing()
-				if err != nil {
-					log.Warnf("wsConn.writePing() = error:%+v", perrors.WithStack(err))
-				}
-			}
-			s.listener.OnCron(s)
-		}
+	if _, err := defaultTimerWheel.AddTimer(heartbeat, gxtime.TimerLoop, s.period, s); err != nil {
+		panic(fmt.Sprintf("failed to add session %s to defaultTimerWheel err:%v", s.Stat(), err))
 	}
+
+	s.grNum.Add(1)
+	// start read gr
+	go s.handlePackage()
 }
 
 func (s *session) addTask(pkg interface{}) {
@@ -551,9 +526,7 @@ func (s *session) handlePackage() {
 			rBuf = rBuf[:runtime.Stack(rBuf, false)]
 			log.Errorf("[session.handlePackage] panic session %s: err=%s\n%s", s.sessionToken(), r, rBuf)
 		}
-
-		close(s.rDone)
-		grNum := atomic.AddInt32(&(s.grNum), -1)
+		grNum := s.grNum.Add(-1)
 		log.Infof("%s, [session.handlePackage] gr will exit now, left gr num %d", s.sessionToken(), grNum)
 		s.stop()
 		if err != nil {
@@ -562,6 +535,9 @@ func (s *session) handlePackage() {
 				s.listener.OnError(s, err)
 			}
 		}
+
+		s.listener.OnClose(s)
+		s.gc()
 	}()
 
 	if _, ok := s.Connection.(*gettyTCPConn); ok {
@@ -628,7 +604,7 @@ func (s *session) handleTCPPackage() error {
 					break
 				}
 				if perrors.Cause(err) == io.EOF {
-					log.Infof("%s, [session.conn.read] = error:%+v", s.sessionToken(), perrors.WithStack(err))
+					log.Infof("%s, session.conn read EOF, client send over, session exit", s.sessionToken())
 					err = nil
 					exit = true
 					break
@@ -700,8 +676,8 @@ func (s *session) handleUDPPackage() error {
 	if int(s.maxMsgLen<<1) < bufLen {
 		maxBufLen = int(s.maxMsgLen << 1)
 	}
-	bufp = gxbytes.GetBytes(maxBufLen)
-	defer gxbytes.PutBytes(bufp)
+	bufp = gxbytes.AcquireBytes(maxBufLen)
+	defer gxbytes.ReleaseBytes(bufp)
 	buf = *bufp
 	for {
 		if s.IsClosed() {
@@ -843,6 +819,5 @@ func (s *session) gc() {
 // or (session)handleLoop automatically. It's thread safe.
 func (s *session) Close() {
 	s.stop()
-	log.Infof("%s closed now. its current gr num is %d",
-		s.sessionToken(), atomic.LoadInt32(&(s.grNum)))
+	log.Infof("%s closed now. its current gr num is %d", s.sessionToken(), s.grNum.Load())
 }