diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index 140d2ef792a878ebe70f759c6863f536ad1f7b9f..11ba2a50d38a233985a272023ff8952c039cada1 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -16,7 +16,8 @@
 #include "transComm.h"
 
 typedef struct SConnList {
-  queue conn;
+  queue   conn;
+  int32_t size;
 } SConnList;
 
 typedef struct SCliConn {
@@ -518,15 +519,18 @@ static SCliConn* getConnFromPool(void* pool, char* ip, uint32_t port) {
   if (QUEUE_IS_EMPTY(&plist->conn)) {
     return NULL;
   }
+
+  plist->size -= 1;
   queue*    h = QUEUE_HEAD(&plist->conn);
   SCliConn* conn = QUEUE_DATA(h, SCliConn, q);
   conn->status = ConnNormal;
   QUEUE_REMOVE(&conn->q);
   QUEUE_INIT(&conn->q);
 
-  transDQCancel(((SCliThrd*)conn->hostThrd)->timeoutQueue, conn->task);
-  conn->task = NULL;
-
+  if (conn->task != NULL) {
+    transDQCancel(((SCliThrd*)conn->hostThrd)->timeoutQueue, conn->task);
+    conn->task = NULL;
+  }
   return conn;
 }
 static void addConnToPool(void* pool, SCliConn* conn) {
@@ -555,13 +559,17 @@ static void addConnToPool(void* pool, SCliConn* conn) {
   assert(conn->list != NULL);
   QUEUE_INIT(&conn->q);
   QUEUE_PUSH(&conn->list->conn, &conn->q);
+  conn->list->size += 1;
 
+  conn->task = NULL;
   assert(!QUEUE_IS_EMPTY(&conn->list->conn));
 
-  STaskArg* arg = taosMemoryCalloc(1, sizeof(STaskArg));
-  arg->param1 = conn;
-  arg->param2 = thrd;
-  conn->task = transDQSched(thrd->timeoutQueue, doCloseIdleConn, arg, CONN_PERSIST_TIME(pTransInst->idleTime));
+  if (conn->list->size >= 10) {
+    STaskArg* arg = taosMemoryCalloc(1, sizeof(STaskArg));
+    arg->param1 = conn;
+    arg->param2 = thrd;
+    conn->task = transDQSched(thrd->timeoutQueue, doCloseIdleConn, arg, CONN_PERSIST_TIME(pTransInst->idleTime));
+  }
 }
 static int32_t allocConnRef(SCliConn* conn, bool update) {
   if (update) {
diff --git a/source/libs/transport/src/transSvr.c b/source/libs/transport/src/transSvr.c
index 8b27d95e520d900539775d36f6aa9cd19c2300bd..14b8b35478ba366a7fa632836dc63dc187b77df7 100644
--- a/source/libs/transport/src/transSvr.c
+++ b/source/libs/transport/src/transSvr.c
@@ -75,7 +75,6 @@ typedef struct SWorkThrd {
   SAsyncPool*   asyncPool;
   uv_prepare_t* prepare;
   queue         msg;
-  TdThreadMutex msgMtx;
 
   queue conn;
   void* pTransInst;
@@ -499,6 +498,7 @@ void uvWorkerAsyncCb(uv_async_t* handle) {
       tError("unexcept occurred, continue");
       continue;
     }
+
     // release handle to rpc init
     if (msg->type == Quit) {
       (*transAsyncHandle[msg->type])(msg, pThrd);
@@ -743,7 +743,6 @@ static bool addHandleToWorkloop(SWorkThrd* pThrd, char* pipeName) {
   pThrd->pipe->data = pThrd;
 
   QUEUE_INIT(&pThrd->msg);
-  taosThreadMutexInit(&pThrd->msgMtx, NULL);
 
   pThrd->prepare = taosMemoryCalloc(1, sizeof(uv_prepare_t));
   uv_prepare_init(pThrd->loop, pThrd->prepare);
diff --git a/source/libs/transport/test/svrBench.c b/source/libs/transport/test/svrBench.c
index 224f527385730dd8a7344d32270ce7883e3280c6..6eb80c8504d68b066d527393a7ba36175f737a23 100644
--- a/source/libs/transport/test/svrBench.c
+++ b/source/libs/transport/test/svrBench.c
@@ -75,15 +75,14 @@ void processShellMsg() {
 
       void *handle = pRpcMsg->info.handle;
       taosFreeQitem(pRpcMsg);
-
-      {
-        SRpcMsg nRpcMsg = {0};
-        nRpcMsg.pCont = rpcMallocCont(msgSize);
-        nRpcMsg.contLen = msgSize;
-        nRpcMsg.info.handle = handle;
-        nRpcMsg.code = TSDB_CODE_CTG_NOT_READY;
-        rpcSendResponse(&nRpcMsg);
-      }
+      //{
+      //  SRpcMsg nRpcMsg = {0};
+      //  nRpcMsg.pCont = rpcMallocCont(msgSize);
+      //  nRpcMsg.contLen = msgSize;
+      //  nRpcMsg.info.handle = handle;
+      //  nRpcMsg.code = TSDB_CODE_CTG_NOT_READY;
+      //  rpcSendResponse(&nRpcMsg);
+      //}
     }
 
     taosUpdateItemSize(qinfo.queue, numOfMsgs);