diff --git a/a8/tcplistener.h b/a8/tcplistener.h
index 09caa3b..d745648 100644
--- a/a8/tcplistener.h
+++ b/a8/tcplistener.h
@@ -25,6 +25,9 @@ namespace a8
         std::string bind_address;
         unsigned short bind_port = 0;
         std::atomic<long long> send_node_num = {0};
+        std::atomic<long long> sent_node_num = {0};
+        std::atomic<long long> sent_bytes_num = {0};
+        std::atomic<long long> recv_bytes_num = {0};
 
     public:
         TcpListener(unsigned short max_client_cnt=0xEFFF);
diff --git a/a8/tcpsession2.cc b/a8/tcpsession2.cc
index 4e3c25c..2e92cad 100644
--- a/a8/tcpsession2.cc
+++ b/a8/tcpsession2.cc
@@ -354,6 +354,8 @@ namespace a8
                 a8::SendQueueNode *pdelnode = work_node_;
                 work_node_ = work_node_->next;
                 --master->send_node_num;
+                ++master->sent_node_num;
+                master->sent_bytes_num += pdelnode->sent_bytes;
                 if (!work_node_) {
                     send_buffer_mutex_.lock();
                     if (top_node_) {