diff --git a/tests/test/c/tmqSim.c b/tests/test/c/tmqSim.c
index a333e6ea5e..85fe456670 100644
--- a/tests/test/c/tmqSim.c
+++ b/tests/test/c/tmqSim.c
@@ -36,7 +36,6 @@
 #define MAX_CONSUMER_THREAD_CNT (16)
 #define MAX_VGROUP_CNT          (32)
 
-int64_t now;
 typedef enum {
   NOTIFY_CMD_START_CONSUM,
   NOTIFY_CMD_START_COMMIT,
@@ -91,6 +90,7 @@ typedef struct {
   int32_t     consumeDelay;  // unit s
   int32_t     numOfThread;
   int32_t     useSnapshot;
+  int64_t     nowTime;
   SThreadInfo stThreads[MAX_CONSUMER_THREAD_CNT];
 } SConfInfo;
 
@@ -199,6 +199,8 @@ void parseArgument(int32_t argc, char* argv[]) {
   g_stConfInfo.saveRowFlag = 0;
   g_stConfInfo.consumeDelay = 5;
 
+  g_stConfInfo.nowTime = taosGetTimestampMs();
+
   for (int32_t i = 1; i < argc; i++) {
     if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0) {
       printHelp();
@@ -511,10 +513,8 @@ static void appNothing(void* param, TAOS_RES* res, int32_t numOfRows) {}
 int32_t notifyMainScript(SThreadInfo* pInfo, int32_t cmdId) {
   char sqlStr[1024] = {0};
 
-  int64_t now = taosGetTimestampMs();
-
   // schema: ts timestamp, consumerid int, consummsgcnt bigint, checkresult int
-  sprintf(sqlStr, "insert into %s.notifyinfo values (%" PRId64 ", %d, %d)", g_stConfInfo.cdbName, now, cmdId,
+  sprintf(sqlStr, "insert into %s.notifyinfo values (%" PRId64 ", %d, %d)", g_stConfInfo.cdbName, atomic_fetch_add_64(&g_stConfInfo.nowTime, 1), cmdId,
           pInfo->consumerId);
 
   taos_query_a(pInfo->taos, sqlStr, appNothing, NULL);
@@ -591,7 +591,7 @@ int32_t saveConsumeResult(SThreadInfo* pInfo) {
   char sqlStr[1024] = {0};
   // schema: ts timestamp, consumerid int, consummsgcnt bigint, checkresult int
   sprintf(sqlStr, "insert into %s.consumeresult values (%" PRId64 ", %d, %" PRId64 ", %" PRId64 ", %d)",
-          g_stConfInfo.cdbName, atomic_fetch_add_64(&now, 1), pInfo->consumerId, pInfo->consumeMsgCnt,
+          g_stConfInfo.cdbName, atomic_fetch_add_64(&g_stConfInfo.nowTime, 1), pInfo->consumerId, pInfo->consumeMsgCnt,
           pInfo->consumeRowCnt, pInfo->checkresult);
 
   char tmpString[128];
@@ -855,8 +855,6 @@ int32_t getConsumeInfo() {
 }
 
 int main(int32_t argc, char* argv[]) {
-  now = taosGetTimestampMs();
-
   parseArgument(argc, argv);
   getConsumeInfo();
   saveConfigToLogFile();