diff --git a/include/common/tglobal.h b/include/common/tglobal.h
index b7f8721459..ec3bac0736 100644
--- a/include/common/tglobal.h
+++ b/include/common/tglobal.h
@@ -23,13 +23,7 @@ extern "C" {
 #include "tdef.h"
 
 // common
-extern int32_t  tsShellActivityTimer;
-extern uint32_t tsMaxTmrCtrl;
-extern float    tsNumOfThreadsPerCore;
-extern int32_t  tsNumOfCommitThreads;
-extern float    tsRatioOfQueryCores;
 extern int8_t   tsDaylight;
-extern int8_t   tsEnableCoreFile;
 extern int32_t  tsCompressMsgSize;
 extern int32_t  tsCompressColData;
 extern int32_t  tsMaxNumOfDistinctResults;
diff --git a/include/util/ttimer.h b/include/util/ttimer.h
index 89ec6cd8d9..01d70c7d02 100644
--- a/include/util/ttimer.h
+++ b/include/util/ttimer.h
@@ -26,7 +26,6 @@ typedef void *tmr_h;
 typedef void (*TAOS_TMR_CALLBACK)(void *, void *);
 
 extern int      taosTmrThreads;
-extern uint32_t tsMaxTmrCtrl;
 
 #define MSECONDS_PER_TICK 5
 
diff --git a/source/client/src/clientEnv.c b/source/client/src/clientEnv.c
index 37227cea6f..38f94ecae8 100644
--- a/source/client/src/clientEnv.c
+++ b/source/client/src/clientEnv.c
@@ -93,7 +93,7 @@ void* openTransporter(const char *user, const char *auth, int32_t numOfThread) {
   rpcInit.sessions = cfgGetItem(tscCfg, "maxConnections")->i32;
   rpcInit.connType = TAOS_CONN_CLIENT;
   rpcInit.user = (char *)user;
-  rpcInit.idleTime = tsShellActivityTimer * 1000;
+  rpcInit.idleTime = cfgGetItem(tscCfg, "shellActivityTimer")->i32 * 1000;
   rpcInit.ckey = "key";
   rpcInit.spi = 1;
   rpcInit.secret = (char *)auth;
diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index f9f00fa9a3..86af06d31a 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -29,12 +29,7 @@
 
 
 // common
-int32_t tsShellActivityTimer = 3;  // second
-float   tsNumOfThreadsPerCore = 1.0f;
-int32_t tsNumOfCommitThreads = 4;
-float   tsRatioOfQueryCores = 1.0f;
 int8_t  tsDaylight = 0;
-int8_t  tsEnableCoreFile = 0;
 int32_t tsMaxBinaryDisplayWidth = 30;
 int8_t  tsEnableSlaveQuery = 1;
 int8_t  tsEnableAdjustMaster = 1;
@@ -286,17 +281,6 @@ static void doInitGlobalConfig(void) {
   cfg.unitType = TAOS_CFG_UTYPE_NONE;
   taosAddConfigOption(cfg);
 
-  // timer
-  cfg.option = "maxTmrCtrl";
-  cfg.ptr = &tsMaxTmrCtrl;
-  cfg.valType = TAOS_CFG_VTYPE_INT32;
-  cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW;
-  cfg.minValue = 8;
-  cfg.maxValue = 2048;
-  cfg.ptrLength = 0;
-  cfg.unitType = TAOS_CFG_UTYPE_NONE;
-  taosAddConfigOption(cfg);
-
   cfg.option = "minSlidingTime";
   cfg.ptr = &tsMinSlidingTime;
   cfg.valType = TAOS_CFG_VTYPE_INT32;
@@ -490,17 +474,6 @@ static void doInitGlobalConfig(void) {
   cfg.unitType = TAOS_CFG_UTYPE_NONE;
   taosAddConfigOption(cfg);
 
-  cfg.option = "enableCoreFile";
-  cfg.ptr = &tsEnableCoreFile;
-  cfg.valType = TAOS_CFG_VTYPE_INT8;
-  cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG;
-  cfg.minValue = 0;
-  cfg.maxValue = 1;
-  cfg.ptrLength = 0;
-  cfg.unitType = TAOS_CFG_UTYPE_NONE;
-  taosAddConfigOption(cfg);
-
-
   cfg.option = "maxBinaryDisplayWidth";
   cfg.ptr = &tsMaxBinaryDisplayWidth;
   cfg.valType = TAOS_CFG_VTYPE_INT32;
diff --git a/source/libs/executor/src/executorimpl.c b/source/libs/executor/src/executorimpl.c
index b35ce9e7c3..62c0e3623f 100644
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@@ -132,7 +132,8 @@ do {                                       \
 } while (0)
 
 int32_t getMaximumIdleDurationSec() {
-  return tsShellActivityTimer * 2;
+  // todo
+  return 6; //tsShellActivityTimer * 2;
 }
 
 static int32_t getExprFunctionId(SExprInfo *pExprInfo) {
@@ -5301,10 +5302,12 @@ SOperatorInfo* createExchangeOperatorInfo(const SArray* pSources, const SArray*
     rpcInit.label = "EX";
     rpcInit.numOfThreads = 1;
     rpcInit.cfp = qProcessFetchRsp;
+    // todo
     rpcInit.sessions = 50000; //tsMaxConnections;
     rpcInit.connType = TAOS_CONN_CLIENT;
     rpcInit.user = (char *)"root";
-    rpcInit.idleTime = tsShellActivityTimer * 1000;
+    // todo 
+    rpcInit.idleTime = 6; //tsShellActivityTimer * 1000;
     rpcInit.ckey = "key";
     rpcInit.spi = 1;
     rpcInit.secret = (char *)"dcc5bed04851fec854c035b2e40263b6";
diff --git a/source/libs/qcom/src/queryUtil.c b/source/libs/qcom/src/queryUtil.c
index 9b381ad823..b29817a318 100644
--- a/source/libs/qcom/src/queryUtil.c
+++ b/source/libs/qcom/src/queryUtil.c
@@ -85,7 +85,9 @@ static void* pTaskQueue = NULL;
 
 int32_t initTaskQueue() {
   double factor = 4.0;
-  int32_t numOfThreads = TMAX((int)(tsNumOfCores * tsNumOfThreadsPerCore / factor), 2);
+  // todo
+  // int32_t numOfThreads = TMAX((int)(tsNumOfCores * tsNumOfThreadsPerCore / factor), 2);
+  int32_t numOfThreads = TMAX((int)(tsNumOfCores * 1.0f / factor), 2);
 
   int32_t queueSize = 25000; //tsMaxConnections * 2;
   pTaskQueue = taosInitScheduler(queueSize, numOfThreads, "tsc");
diff --git a/source/libs/transport/test/rsclient.c b/source/libs/transport/test/rsclient.c
index f9bcc3da96..26a02eb05b 100644
--- a/source/libs/transport/test/rsclient.c
+++ b/source/libs/transport/test/rsclient.c
@@ -97,7 +97,7 @@ int main(int argc, char *argv[]) {
   rpcInit.label        = "APP";
   rpcInit.numOfThreads = 1;
   rpcInit.sessions     = 100;
-  rpcInit.idleTime     = tsShellActivityTimer*1000;
+  rpcInit.idleTime     = 3000; //tsShellActivityTimer*1000;
   rpcInit.user         = "michael";
   rpcInit.secret       = secret;
   rpcInit.ckey         = "key";