diff --git a/deps/oblib/src/rpc/obrpc/ob_net_keepalive.cpp b/deps/oblib/src/rpc/obrpc/ob_net_keepalive.cpp
index fce69d58f7..7645ca9ed6 100644
--- a/deps/oblib/src/rpc/obrpc/ob_net_keepalive.cpp
+++ b/deps/oblib/src/rpc/obrpc/ob_net_keepalive.cpp
@@ -677,6 +677,21 @@ int ret = OB_SUCCESS;
   }
 }
 
+int ObNetKeepAlive::get_last_resp_ts(const common::ObAddr &addr, int64_t &last_resp_ts)
+{
+  int ret = OB_SUCCESS;
+  last_resp_ts = OB_INVALID_TIMESTAMP;
+
+  easy_addr_t ez_addr = to_ez_addr(addr);
+  DestKeepAliveState *rs = regist_dest_if_need(ez_addr);
+  if (rs != NULL) {
+    last_resp_ts = ATOMIC_LOAD(&rs->last_read_ts_);
+  } else {
+    ret = OB_ERR_UNEXPECTED;
+  }
+  return ret;
+}
+
 }//end of namespace obrpc
 }//end of namespace oceanbase
 
diff --git a/deps/oblib/src/rpc/obrpc/ob_net_keepalive.h b/deps/oblib/src/rpc/obrpc/ob_net_keepalive.h
index 466b00aad0..f8f5d9a801 100644
--- a/deps/oblib/src/rpc/obrpc/ob_net_keepalive.h
+++ b/deps/oblib/src/rpc/obrpc/ob_net_keepalive.h
@@ -66,6 +66,7 @@ public:
   int in_black(const easy_addr_t &addr, bool &in_blacklist, ObNetKeepAliveData *ka_data);
   int in_black(const common::ObAddr &addr, bool &in_blacklist, ObNetKeepAliveData *ka_data);
   virtual bool in_black(const easy_addr_t &addr);
+  int get_last_resp_ts(const common::ObAddr &addr, int64_t &last_resp_ts);
 private:
   void do_server_loop();
   void do_client_loop();
diff --git a/mittest/logservice/env/ob_simple_log_server.cpp b/mittest/logservice/env/ob_simple_log_server.cpp
index f7df7b9e64..e31e7c6b88 100644
--- a/mittest/logservice/env/ob_simple_log_server.cpp
+++ b/mittest/logservice/env/ob_simple_log_server.cpp
@@ -64,7 +64,8 @@ bool MockNetKeepAliveAdapter::in_black_or_stopped(const common::ObAddr &server)
 
 bool MockNetKeepAliveAdapter::is_server_stopped(const common::ObAddr &server)
 {
-  return log_deliver_->need_filter_packet_by_blacklist(server);
+  UNUSED(server);
+  return false;
 }
 
 bool MockNetKeepAliveAdapter::in_black(const common::ObAddr &server)
@@ -72,6 +73,17 @@ bool MockNetKeepAliveAdapter::in_black(const common::ObAddr &server)
   return log_deliver_->need_filter_packet_by_blacklist(server);
 }
 
+int MockNetKeepAliveAdapter::get_last_resp_ts(const common::ObAddr &server,
+                                              int64_t &last_resp_ts)
+{
+  if (log_deliver_->need_filter_packet_by_blacklist(server)) {
+    last_resp_ts = 1;
+  } else {
+    last_resp_ts = common::ObTimeUtility::current_time();
+  }
+  return OB_SUCCESS;
+}
+
 uint32_t get_local_addr(const char *dev_name)
 {
   int fd, intrface;
diff --git a/mittest/logservice/env/ob_simple_log_server.h b/mittest/logservice/env/ob_simple_log_server.h
index ce3b1d2620..b34018c1c3 100644
--- a/mittest/logservice/env/ob_simple_log_server.h
+++ b/mittest/logservice/env/ob_simple_log_server.h
@@ -78,6 +78,7 @@ public:
   bool in_black_or_stopped(const common::ObAddr &server) override final;
   bool is_server_stopped(const common::ObAddr &server) override final;
   bool in_black(const common::ObAddr &server) override final;
+  int get_last_resp_ts(const common::ObAddr &server, int64_t &last_resp_ts) override final;
 private:
   unittest::ObLogDeliver *log_deliver_;
 };
diff --git a/mittest/logservice/test_ob_simple_log_arb.cpp b/mittest/logservice/test_ob_simple_log_arb.cpp
index 88eedc7d39..be58ace146 100755
--- a/mittest/logservice/test_ob_simple_log_arb.cpp
+++ b/mittest/logservice/test_ob_simple_log_arb.cpp
@@ -22,12 +22,14 @@ namespace oceanbase
 {
 using namespace logservice;
 
+int64_t ARB_TIMEOUT_ARG = 2 * 1000 * 1000L;
+
 namespace logservice
 {
 
 void ObArbitrationService::update_arb_timeout_()
 {
-  arb_timeout_us_ = 2 * 1000 * 1000L;
+  arb_timeout_us_ = ARB_TIMEOUT_ARG;
   if (REACH_TIME_INTERVAL(2 * 1000 * 1000)) {
     CLOG_LOG_RET(WARN, OB_ERR_UNEXPECTED, "update_arb_timeout_", K_(self), K_(arb_timeout_us));
   }
@@ -213,6 +215,7 @@ TEST_F(TestObSimpleLogClusterArbService, test_2f1a_reconfirm_degrade_upgrade)
   palf_list[another_f_idx]->palf_handle_impl_->set_location_cache_cb(&loc_cb);
   // block net of old leader, new leader will be elected
   // and degrade in RECONFIRM state
+  ARB_TIMEOUT_ARG = 15 * 1000 * 1000;
   block_net(leader_idx, another_f_idx);
   block_net(leader_idx, arb_replica_idx);
   // block_net后会理解进行降级操作，导致旧主上有些单副本写成功的日志被committed
@@ -234,6 +237,7 @@ TEST_F(TestObSimpleLogClusterArbService, test_2f1a_reconfirm_degrade_upgrade)
   leader.reset();
   new_leader.reset();
   delete_paxos_group(id);
+  ARB_TIMEOUT_ARG = 2 * 1000 * 1000;
   PALF_LOG(INFO, "end test_2f1a_reconfirm_degrade_upgrade", K(id));
 }
 
diff --git a/mittest/logservice/test_ob_simple_log_arb_mock_ele.cpp b/mittest/logservice/test_ob_simple_log_arb_mock_ele.cpp
index fd34b61484..a4a67272ff 100755
--- a/mittest/logservice/test_ob_simple_log_arb_mock_ele.cpp
+++ b/mittest/logservice/test_ob_simple_log_arb_mock_ele.cpp
@@ -738,7 +738,7 @@ TEST_F(TestObSimpleLogClusterArbMockEleService, test_2f1a_disk_full_reconfirm)
       srv->set_leader(id, addr1);
     }
     EXPECT_UNTIL_EQ(false, a_handle->palf_handle_impl_->state_mgr_.is_leader_active());
-    global_timeous_us = 5 * 1000 * 1000;
+    global_timeous_us = 15 * 1000 * 1000;
     dynamic_cast<ObSimpleLogServer*>(get_cluster()[leader_idx])->log_service_.get_arbitration_service()->start();
 
     for (auto srv: get_cluster()) {
diff --git a/src/logservice/ob_net_keepalive_adapter.cpp b/src/logservice/ob_net_keepalive_adapter.cpp
index c682017601..8478c5542f 100644
--- a/src/logservice/ob_net_keepalive_adapter.cpp
+++ b/src/logservice/ob_net_keepalive_adapter.cpp
@@ -84,5 +84,22 @@ bool ObNetKeepAliveAdapter::in_black(const common::ObAddr &server)
   }
   return bool_ret;
 }
+
+int ObNetKeepAliveAdapter::get_last_resp_ts(const common::ObAddr &server,
+                                            int64_t &last_resp_ts)
+{
+  int ret = OB_SUCCESS;
+  if (!server.is_valid()) {
+    ret = OB_INVALID_ARGUMENT;
+    CLOG_LOG(WARN, "invalid argument", K(server));
+  } else if (OB_FAIL(net_keepalive_->get_last_resp_ts(server, last_resp_ts))) {
+    CLOG_LOG(WARN, "get_last_resp_ts failed", K(ret), K(server));
+  } else {
+    if (REACH_TIME_INTERVAL(1 * 1000 * 1000)) {
+      CLOG_LOG(TRACE, "get_last_resp_ts", K(server), K(last_resp_ts));
+    }
+  }
+  return ret;
+}
 } // end namespace logservice
 } // end namespace oceanbase
diff --git a/src/logservice/ob_net_keepalive_adapter.h b/src/logservice/ob_net_keepalive_adapter.h
index d141776c57..5376dafb8e 100644
--- a/src/logservice/ob_net_keepalive_adapter.h
+++ b/src/logservice/ob_net_keepalive_adapter.h
@@ -10,6 +10,7 @@
 
 #ifndef OCEANBASE_LOGSERVICE_OB_NET_KEEPALIVE_ADPATER_H_
 #define OCEANBASE_LOGSERVICE_OB_NET_KEEPALIVE_ADPATER_H_
+#include <stdint.h>  // for int64_t etc.
 
 namespace oceanbase
 {
@@ -30,6 +31,7 @@ public:
   virtual bool in_black_or_stopped(const common::ObAddr &server) = 0;
   virtual bool is_server_stopped(const common::ObAddr &server) = 0;
   virtual bool in_black(const common::ObAddr &server) = 0;
+  virtual int get_last_resp_ts(const common::ObAddr &server, int64_t &last_resp_ts) = 0;
 };
 
 class ObNetKeepAliveAdapter : public IObNetKeepAliveAdapter {
@@ -39,6 +41,7 @@ public:
   bool in_black_or_stopped(const common::ObAddr &server) override final;
   bool is_server_stopped(const common::ObAddr &server) override final;
   bool in_black(const common::ObAddr &server) override final;
+  int get_last_resp_ts(const common::ObAddr &server, int64_t &last_resp_ts) override final;
 private:
   int in_black_or_stopped_(const common::ObAddr &server,
                            bool &in_black,
diff --git a/unittest/logservice/test_ob_arbitration_service.cpp b/unittest/logservice/test_ob_arbitration_service.cpp
index 8db309eb60..eb85cbe779 100644
--- a/unittest/logservice/test_ob_arbitration_service.cpp
+++ b/unittest/logservice/test_ob_arbitration_service.cpp
@@ -29,6 +29,7 @@ public:
   bool in_black_or_stopped(const common::ObAddr &server) override final {return false;}
   bool is_server_stopped(const common::ObAddr &server) override final {return false;}
   bool in_black(const common::ObAddr &server) override final {return false;}
+  int get_last_resp_ts(const common::ObAddr &server, int64_t &last_resp_ts) { return OB_SUCCESS; }
 };
 
 const ObAddr addr1(ObAddr::IPV4, "127.0.0.1", 1000);