diff --git a/connection.cpp b/connection.cpp
index 5a2870a..7349547 100644
--- a/connection.cpp
+++ b/connection.cpp
@@ -170,6 +170,7 @@ int conv_manager_t::clear_inactive0(char * ip_port)
 		}
 		cnt++;
 	}
+	clear_it=it;
 	return 0;
 }
 
@@ -178,7 +179,7 @@ int conv_manager_t::clear_inactive0(char * ip_port)
  conn_manager_t::conn_manager_t()
  {
 	 //ready_num=0;
-	 mp.reserve(100007);
+	 mp.reserve(10007);
 	 //fd64_mp.reserve(100007);
 	 clear_it=mp.begin();
 	 last_clear_time=0;
@@ -280,6 +281,7 @@ int conn_manager_t::clear_inactive()
 }
 int conn_manager_t::clear_inactive0()
 {
+mylog(log_info,"called\n");
 	 unordered_map<u64_t,conn_info_t*>::iterator it;
 	 unordered_map<u64_t,conn_info_t*>::iterator old_it;
 
@@ -287,7 +289,7 @@ int conn_manager_t::clear_inactive0()
 
 	//map<uint32_t,uint64_t>::iterator it;
 	int cnt=0;
-	it=clear_it;
+	it=clear_it;//TODO,write it back
 	int size=mp.size();
 	int num_to_clean=size/conn_clear_ratio+conn_clear_min;   //clear 1/10 each time,to avoid latency glitch
 
@@ -296,18 +298,19 @@ int conn_manager_t::clear_inactive0()
 	num_to_clean=min(num_to_clean,(int)mp.size());
 	u64_t current_time=get_current_time();
 
+	mylog(log_info,"here size=%d\n",(int)mp.size());
 	for(;;)
 	{
 		if(cnt>=num_to_clean) break;
 		if(mp.begin()==mp.end()) break;
-
 		if(it==mp.end())
 		{
 			it=mp.begin();
 		}
 
-		else if(it->second->conv_manager.get_size() >0)
+		if(it->second->conv_manager.get_size() >0)
 		{
+			mylog(log_info,"[%s:%d]size %d \n",my_ntoa(get_u64_h(it->first)),get_u64_l(it->first),(int)it->second->conv_manager.get_size());
 			it++;
 		}
 		else
@@ -319,6 +322,7 @@ int conn_manager_t::clear_inactive0()
 		}
 		cnt++;
 	}
+	clear_it=it;
 	return 0;
 }
 
diff --git a/delay_manager.h b/delay_manager.h
index 628f061..c1b0b7e 100644
--- a/delay_manager.h
+++ b/delay_manager.h
@@ -117,6 +117,10 @@ struct delay_manager_t
 	int capacity;
 	multimap<my_time_t,delay_data_t> delay_mp;  //unit us,1 us=0.001ms
 	delay_manager_t();
+	delay_manager_t(delay_manager_t &b)
+	{
+		assert(0==1);
+	}
 	~delay_manager_t();
 	int get_timer_fd();
 	int check();
diff --git a/main.cpp b/main.cpp
index f4676fb..83f4a3f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -442,6 +442,9 @@ int client_event_loop()
 					if(get_conv(conv,out_arr[i],out_len[i],new_data,new_len)!=0)
 						continue;
 					if(!conn_info.conv_manager.is_conv_used(conv))continue;
+
+					conn_info.conv_manager.update_active_time(conv);
+
 					u64_t u64=conn_info.conv_manager.find_u64_by_conv(conv);
 					dest_t dest;
 					dest.inner.ip_port.from_u64(u64);
@@ -605,6 +608,8 @@ int server_event_loop()
 					u64_t timer_fd64=conn_info.timer.get_timer_fd64();
 					fd_manager.get_info(timer_fd64).ip_port=ip_port;
 
+					mylog(log_info,"new connection from %s\n",ip_port.to_s());
+
 				}
 				conn_info_t &conn_info=conn_manager.find(ip_port);
 
@@ -641,10 +646,14 @@ int server_event_loop()
 
 						conn_info.conv_manager.insert_conv(conv, fd64);
 						fd_manager.get_info(fd64).ip_port=ip_port;
+
+
+						mylog(log_info,"[%s]new conv %x,fd %d created\n",ip_port.to_s(),conv,new_udp_fd);
 						//assert(!conn_manager.exist_fd64(fd64));
 
 						//conn_manager.insert_fd64(fd64,ip_port);
 					}
+					conn_info.conv_manager.update_active_time(conv);
 					fd64_t fd64= conn_info.conv_manager.find_u64_by_conv(conv);
 					//int fd=fd_manager.fd64_to_fd(fd64);
 					dest_t dest;
@@ -755,6 +764,7 @@ int server_event_loop()
 					assert(conn_info.conv_manager.is_u64_used(fd64));
 
 					conv=conn_info.conv_manager.find_conv_by_u64(fd64);
+					conn_info.conv_manager.update_active_time(conv);
 
 					int fd=fd_manager.to_fd(fd64);
 					data_len=recv(fd,data,max_data_len,0);