diff --git a/server/imserver/MSConn.h b/server/imserver/MSConn.h
index 982a020..867e84b 100644
--- a/server/imserver/MSConn.h
+++ b/server/imserver/MSConn.h
@@ -3,6 +3,8 @@
 #include "framework/cpp/protoutils.h"
 #include "framework/cpp/netmsghandler.h"
 
+#include "perfmonitor.h"
+
 namespace a8
 {
     class AsyncTcpClient;
@@ -30,6 +32,7 @@ class MSConn
     {
         static int msgid = f8::Net_GetMessageId(msg);
         f8::Net_SendMsg(tcp_client_, 0, msgid, msg);
+        ++PerfMonitor::Instance()->ms_send_times;
         #ifdef DEBUG
         f8::DumpMsgToLog(msg, "<<<<<<<MSC ");
         #endif
@@ -37,6 +40,7 @@ class MSConn
     void SendMsg(int msgid, ::google::protobuf::Message& msg)
     {
         f8::Net_SendMsg(tcp_client_, 0, msgid, msg);
+        ++PerfMonitor::Instance()->ms_send_times;
         #ifdef DEBUG
         f8::DumpMsgToLog(msg, "<<<<<<<IMC ");
         #endif
diff --git a/server/imserver/perfmonitor.cc b/server/imserver/perfmonitor.cc
index 80ce651..48c5666 100644
--- a/server/imserver/perfmonitor.cc
+++ b/server/imserver/perfmonitor.cc
@@ -16,7 +16,8 @@ static void SavePerfLog()
         ("max_run_delay_time:%d max_timer_idle:%d "
          "in_data_size:%d out_data_size:%d msgnode_size:%d read_count:%d max_login_time:%d "
          "login_ok_time:%d login_error_time:%d online_num:%d watch_num:%d cache_users_num:%d "
-         "send_ws_count:%d db.total_query_num:%d db.exec_query_num:%d db.run_loop_num:%d ",
+         "send_ws_count:%d db.total_query_num:%d db.exec_query_num:%d db.run_loop_num:%d "
+         "ms_send_times:%d ms_recv_times:%d ",
          {
           PerfMonitor::Instance()->max_run_delay_time,
           PerfMonitor::Instance()->max_timer_idle,
@@ -33,7 +34,9 @@ static void SavePerfLog()
           PerfMonitor::Instance()->send_ws_count,
           (long long)f8::DBPool::Instance()->total_query_num,
           (long long)f8::DBPool::Instance()->exec_query_num,
-          (long long)f8::DBPool::Instance()->run_loop_num
+          (long long)f8::DBPool::Instance()->run_loop_num,
+          PerfMonitor::Instance()->ms_send_times,
+          PerfMonitor::Instance()->ms_recv_times
          });
     a8::UdpLog::Instance()->Info
         ("run_times:%d timer_times:%d event_times:%d free_times:%d "
diff --git a/server/imserver/perfmonitor.h b/server/imserver/perfmonitor.h
index 57dbb00..f151869 100644
--- a/server/imserver/perfmonitor.h
+++ b/server/imserver/perfmonitor.h
@@ -17,6 +17,8 @@ class PerfMonitor : public a8::Singleton<PerfMonitor>
     long long in_data_size = 0;
     long long read_count = 0;
     long long send_ws_count = 0;
+    long long ms_send_times = 0;
+    long long ms_recv_times = 0;
 
     void Init();
     void UnInit();
diff --git a/server/imserver/playermgr.cc b/server/imserver/playermgr.cc
index b72bebd..22644e2 100644
--- a/server/imserver/playermgr.cc
+++ b/server/imserver/playermgr.cc
@@ -87,6 +87,7 @@ void PlayerMgr::_SS_IM_FriendApply(f8::MsgHdr& hdr, const ss::SS_IM_FriendApply&
 
 void PlayerMgr::_SS_IM_OnUserOnline(f8::MsgHdr& hdr, const ss::SS_IM_OnUserOnline& msg)
 {
+    int times = 0;
     for (auto& account_id : msg.account_ids()) {
         auto itr = watch_players_.find(account_id);
         if (itr != watch_players_.end()) {
@@ -94,6 +95,16 @@ void PlayerMgr::_SS_IM_OnUserOnline(f8::MsgHdr& hdr, const ss::SS_IM_OnUserOnlin
             list_for_each_entry_safe(node, tmp, &itr->second, watch_node) {
                 node->base_data.online = true;
                 node->hum->NotifyUserInfoUpdate(node);
+                ++times;
+                if (times > 100) {
+                    a8::UdpLog::Instance()->Warning
+                        ("OnUserOnLine watch account_id:%s times:%d ",
+                         {
+                          account_id,
+                          times
+                         });
+                    break;
+                }
             }
         }
     }
@@ -101,6 +112,7 @@ void PlayerMgr::_SS_IM_OnUserOnline(f8::MsgHdr& hdr, const ss::SS_IM_OnUserOnlin
 
 void PlayerMgr::_SS_IM_OnUserOffline(f8::MsgHdr& hdr, const ss::SS_IM_OnUserOffline& msg)
 {
+    int times = 0;
     for (auto& account_id : msg.account_ids()) {
         auto itr = watch_players_.find(account_id);
         if (itr != watch_players_.end()) {
@@ -108,6 +120,16 @@ void PlayerMgr::_SS_IM_OnUserOffline(f8::MsgHdr& hdr, const ss::SS_IM_OnUserOffl
             list_for_each_entry_safe(node, tmp, &itr->second, watch_node) {
                 node->base_data.online = false;
                 node->hum->NotifyUserInfoUpdate(node);
+                ++times;
+                if (times > 100) {
+                    a8::UdpLog::Instance()->Warning
+                        ("OnUserOffLine watch account_id:%s times:%d ",
+                         {
+                          account_id,
+                          times
+                         });
+                    break;
+                }
             }
         }
     }
diff --git a/third_party/a8engine b/third_party/a8engine
index 645913c..d6786bc 160000
--- a/third_party/a8engine
+++ b/third_party/a8engine
@@ -1 +1 @@
-Subproject commit 645913c9d4cc7126475f110b3c7d55bc2f4bc5f0
+Subproject commit d6786bcdb167afad09bcad7d34e247879dfc735a