Ceph » RADOS

there are 3 nodes in our cluster, 84 OSD each node.
after execute "systemctl restart ceph-osd.target" on node2, there is 1 slow op in mon.b

"ops": [
       {
            "description": "osd_alive(want up_thru 1348 have 1348)",
            "initiated_at": "2022-03-29T12:10:11.016387+0800",
            "age": 9036.0939306100008,
            "duration": 9036.0939519370004,
            "type_data": {
                "events": [
                   {
                        "time": "2022-03-29T12:10:11.016387+0800",
                        "event": "initiated" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.016391+0800",
                        "event": "throttled" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.016387+0800",
                        "event": "header_read" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.016404+0800",
                        "event": "all_read" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.016667+0800",
                        "event": "dispatched" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.016675+0800",
                        "event": "mon:_ms_dispatch" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.016677+0800",
                        "event": "mon:dispatch_op" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.016678+0800",
                        "event": "psvc:dispatch" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.016699+0800",
                        "event": "osdmap:preprocess_query" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.016702+0800",
                        "event": "osdmap:preprocess_alive" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.016717+0800",
                        "event": "osdmap:wait_for_writeable" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.016718+0800",
                        "event": "osdmap:wait_for_finished_proposal" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.721484+0800",
                        "event": "callback finished" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.721485+0800",
                        "event": "psvc:dispatch" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.721499+0800",
                        "event": "osdmap:preprocess_query" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.721502+0800",
                        "event": "osdmap:preprocess_alive" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.721510+0800",
                        "event": "osdmap:prepare_update" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.721512+0800",
                        "event": "osdmap:prepare_alive" 
                    },
                   {
                        "time": "2022-03-29T12:10:11.721515+0800",
                        "event": "osdmap:wait_for_finished_proposal" 
                    },
                   {
                        "time": "2022-03-29T12:10:12.548334+0800",
                        "event": "callback retry" 
                    },
                   {
                        "time": "2022-03-29T12:10:12.548335+0800",
                        "event": "psvc:dispatch" 
                    },
                   {
                        "time": "2022-03-29T12:10:12.548350+0800",
                        "event": "osdmap:wait_for_readable" 
                    },
                   {
                        "time": "2022-03-29T12:10:12.548352+0800",
                        "event": "osdmap:wait_for_readable/paxos" 
                    },
                   {
                        "time": "2022-03-29T12:10:12.548360+0800",
                        "event": "paxos:wait_for_readable" 
                    },
                   {
                        "time": "2022-03-29T12:10:12.775644+0800",
                        "event": "callback finished" 
                    },
                   {
                        "time": "2022-03-29T12:10:12.775645+0800",
                        "event": "psvc:dispatch" 
                    },
                   {
                        "time": "2022-03-29T12:10:12.775669+0800",
                        "event": "osdmap:preprocess_query" 
                    },
                   {
                        "time": "2022-03-29T12:10:12.775671+0800",
                        "event": "osdmap:preprocess_alive" 
                    },
                   {
                        "time": "2022-03-29T12:10:12.775683+0800",
                        "event": "forward_request_leader" 
                    },
                   {
                        "time": "2022-03-29T12:10:12.775758+0800",
                        "event": "forwarded" 
                    }
                ],
                "info": {
                    "seq": 9009263,
                    "src_is_mon": false,
                    "source": "osd.128 v1:142.137.11.142:7263/1961019",
                    "forwarded_to_leader": true
                }
            }