diff --git a/tests/pytest/util/dnodes.py b/tests/pytest/util/dnodes.py
index c78efb4e8dbcc95c71f5a863fcd93413fcdf1736..952aca70cf5f825f6c3217e53e73e5291b71d83e 100644
--- a/tests/pytest/util/dnodes.py
+++ b/tests/pytest/util/dnodes.py
@@ -264,7 +264,7 @@ class TDDnode:
             cmd = "nohup %s -c %s > /dev/null 2>&1 & " % (
                 binPath, self.cfgDir)
         else:
-            valgrindCmdline = "valgrind --tool=memcheck --leak-check=full --show-reachable=no --track-origins=yes --show-leak-kinds=all -v --workaround-gcc296-bugs=yes"
+            valgrindCmdline = "valgrind --log-file=\"valgrind.log\"  --tool=memcheck --leak-check=full --show-reachable=no --track-origins=yes --show-leak-kinds=all -v --workaround-gcc296-bugs=yes"
 
             cmd = "nohup %s %s -c %s 2>&1 & " % (
                 valgrindCmdline, binPath, self.cfgDir)
@@ -325,7 +325,7 @@ class TDDnode:
             cmd = "nohup %s -c %s > /dev/null 2>&1 & " % (
                 binPath, self.cfgDir)
         else:
-            valgrindCmdline = "valgrind --tool=memcheck --leak-check=full --show-reachable=no --track-origins=yes --show-leak-kinds=all -v --workaround-gcc296-bugs=yes"
+            valgrindCmdline = "valgrind  --log-file=\"valgrind.log\"  --tool=memcheck --leak-check=full --show-reachable=no --track-origins=yes --show-leak-kinds=all -v --workaround-gcc296-bugs=yes"
 
             cmd = "nohup %s %s -c %s 2>&1 & " % (
                 valgrindCmdline, binPath, self.cfgDir)
diff --git a/tests/system-test/1-insert/insertWithMoreVgroup.py b/tests/system-test/1-insert/insertWithMoreVgroup.py
index ede33e7aa77e569fd5a8d587b74479617f589349..f0f35831dbd5a276c98e2eede114ea14b7bcc5b2 100644
--- a/tests/system-test/1-insert/insertWithMoreVgroup.py
+++ b/tests/system-test/1-insert/insertWithMoreVgroup.py
@@ -119,7 +119,7 @@ class TDTestCase:
         # tdLog.debug("spent %.2fs to create 1 stable and %d table, create speed is %.2f table/s... [OK]"% (spendTime,count,speedCreate))
         return
 
-    def mutiThread_create_tables(self,host,dbname,stbname,vgroups,threadNumbers,count):
+    def mutiThread_create_tables(self,host,dbname,stbname,vgroups,threadNumbers,childrowcount):
         buildPath = self.getBuildPath()
         config = buildPath+ "../sim/dnode1/cfg/"
         
@@ -128,7 +128,7 @@ class TDTestCase:
         tsql.execute("drop database if exists %s"%dbname)
         tsql.execute("create database %s vgroups %d"%(dbname,vgroups))
         tsql.execute("use %s" %dbname)
-        count=int(count)
+        count=int(childrowcount)
         threads = []
         for i in range(threadNumbers):
             tsql.execute("create stable %s%d(ts timestamp, c1 int, c2 binary(10)) tags(t1 int)"%(stbname,i))
@@ -140,7 +140,7 @@ class TDTestCase:
             tr.join()
         end_time = time.time()
         spendTime=end_time-start_time
-        speedCreate=count/spendTime
+        speedCreate=threadNumbers*count/spendTime
         tdLog.debug("spent %.2fs to create %d stable and %d table, create speed is %.2f table/s... [OK]"% (spendTime,threadNumbers,threadNumbers*count,speedCreate))
         
         return
@@ -171,7 +171,7 @@ class TDTestCase:
                     sql = "insert into %s_%d values " %(stbname,i)
         # end sql        
         if sql != pre_insert:
-            print(sql)
+            # print(sql)
             print(len(sql))
             tsql.execute(sql)
         exeEndTime=time.time()
@@ -269,7 +269,7 @@ class TDTestCase:
         tdLog.debug("-----create database and muti-thread create tables test------- ")
         #host,dbname,stbname,vgroups,threadNumbers,tcountStart,tcountStop
         #host, dbname, stbname, threadNumbers, chilCount, ts_start, childrowcount
-        self.mutiThread_create_tables(host="localhost",dbname="db",stbname="stb", vgroups=1, threadNumbers=5, count=50)
+        self.mutiThread_create_tables(host="localhost",dbname="db",stbname="stb", vgroups=1, threadNumbers=5, childrowcount=50)
         self.mutiThread_insert_data(host="localhost",dbname="db",stbname="stb", threadNumbers=5,chilCount=50,ts_start=self.ts,childrowcount=10)
 
         return