为什么呢， 之前还是好好的，服务也没压力
docker部署的，版本：5.0.11
日志：
2024-04-29T02:45:42.163118+00:00 [warning] clientid: mqtt_iot_client, line: 881, mfa: emqx_connection:handle_info/2, msg: socket_error, peername: 172.22.21.198:57072, reason: timeout
2024-04-29T02:45:42.163877+00:00 [warning] line: 421, mfa: emqx_alarm:do_actions/3, msg: alarm_is_deactivated, name: <<"conn_congestion/mqtt_iot_client/admin">>
2024-04-29T02:48:29.098321+00:00 [warning] line: 415, message: <<"connection congested: #{buffer => 4096,clientid => <<\"mqtt_iot_client\">>,conn_state => connected,connected_at => 1714358838363,high_msgq_watermark => 8192,high_watermark => 1048576,memory => 43760,message_queue_len => 2,peername => <<\"172.22.21.198:57074\">>,pid => <<\"<0.19663.0>\">>,proto_name => <<\"MQTT\">>,proto_ver => 4,recbuf => 369280,recv_cnt => 2,recv_oct => 74,reductions => 12930520,send"...>>, mfa: emqx_alarm:do_actions/3, msg: alarm_is_activated, name: <<"conn_congestion/mqtt_iot_client/admin">>
2024-04-29T02:48:53.803237+00:00 [warning] line: 178, mfa: emqx_sys_mon:handle_info/2, msg: busy_port, portinfo: [{port,#Port<0.5482>},{name,"tcp_inet"},{links,[<0.19663.0>]},{id,43856},{connected,<0.19663.0>},{input,0},{output,4262244},{os_pid,undefined}], procinfo: [{pid,<0.19663.0>},{memory,42512},{total_heap_size,5172},{heap_size,2586},{stack_size,34},{min_heap_size,233},{proc_lib_initial_call,{emqx_connection,init,['Argument__1','Argument__2','Argument__3','Argument__4']}},{initial_call,{proc_lib,init_p,5}},{current_stacktrace,[{erlang,port_command,3,[]},{esockd_transport,async_send,3,[{file,"esockd_transport.erl"},{line,153}]},{emqx_connection,send,2,[{file,"emqx_connection.erl"},{line,857}]},{emqx_connection,process_msg,2,[{file,"emqx_connection.erl"},{line,466}]},{emqx_connection,process_msg,2,[{file,"emqx_connection.erl"},{line,472}]},{emqx_connection,handle_recv,3,[{file,"emqx_connection.erl"},{line,428}]},{proc_lib,wake_up,3,[{file,"proc_lib.erl"},{line,236}]}]},{registered_name,[]},{status,suspended},{message_queue_len,0},{group_leader,<0.1896.0>},{priority,normal},{trap_exit,false},{reductions,16680086},{last_calls,false},{catchlevel,4},{trace,0},{suspending,[]},{sequential_trace_token,[]},{error_handler,error_handler}]
2024-04-29T02:49:09.091546+00:00 [warning] clientid: mqtt_iot_client, line: 881, mfa: emqx_connection:handle_info/2, msg: socket_error, peername: 172.22.21.198:57074, reason: timeout
2024-04-29T02:49:09.092426+00:00 [warning] line: 421, mfa: emqx_alarm:do_actions/3, msg: alarm_is_deactivated, name: <<"conn_congestion/mqtt_iot_client/admin">>