diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index d5c79afe..b05c524c 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -57,6 +57,7 @@ jobs:
       - name: unit test
         run: |
           cd build
+          sudo apt-get update
           sudo apt install -y lcov
           ctest --output-on-failure -O tests/reports/ut.log --output-junit tests/reports/output.xml
           lcov --capture --directory . --output-file  testneuron.info --test-name testneuron
diff --git a/src/adapter/adapter.c b/src/adapter/adapter.c
index b19879d9..ae4d9466 100644
--- a/src/adapter/adapter.c
+++ b/src/adapter/adapter.c
@@ -124,8 +124,8 @@ neu_adapter_t *neu_adapter_create(neu_adapter_info_t *info)
 
     rv = nng_pair1_open(&adapter->sock);
     assert(rv == 0);
-    nng_socket_set_int(adapter->sock, NNG_OPT_RECVBUF, 2048);
-    nng_socket_set_int(adapter->sock, NNG_OPT_SENDBUF, 2048);
+    nng_socket_set_int(adapter->sock, NNG_OPT_RECVBUF, 8192);
+    nng_socket_set_int(adapter->sock, NNG_OPT_SENDBUF, 8192);
     nng_socket_set_ms(adapter->sock, NNG_OPT_SENDTIMEO, 1000);
     nng_socket_get_int(adapter->sock, NNG_OPT_RECVFD, &adapter->recv_fd);
 
diff --git a/src/core/manager.c b/src/core/manager.c
index 903a253b..d4463e63 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -99,6 +99,7 @@ neu_manager_t *neu_manager_create()
 
     nng_socket_set_int(manager->socket, NNG_OPT_RECVBUF, 8192);
     nng_socket_set_int(manager->socket, NNG_OPT_SENDBUF, 8292);
+    nng_socket_set_ms(manager->socket, NNG_OPT_SENDTIMEO, 1000);
     nng_socket_get_int(manager->socket, NNG_OPT_RECVFD, &param.fd);
     manager->loop = neu_event_add_io(manager->events, param);
 
@@ -899,6 +900,7 @@ inline static void forward_msg_dup(neu_manager_t *manager, nng_msg *msg,
     if (nng_sendmsg(manager->socket, out_msg, 0) == 0) {
         nlog_debug("forward msg to pipe %d", pipe.id);
     } else {
+        nlog_warn("forward msg to pipe %d fail", pipe.id);
         nng_msg_free(out_msg);
     }
 }
@@ -914,6 +916,7 @@ inline static void forward_msg(neu_manager_t *manager, nng_msg *msg,
     if (nng_sendmsg(manager->socket, out_msg, 0) == 0) {
         nlog_debug("forward msg to %s", node);
     } else {
+        nlog_warn("forward msg to pipe (%s)%d fail", node, pipe.id);
         nng_msg_free(out_msg);
     }
 }