diff --git a/tests/system-test/1-insert/insertWithMoreVgroup.py b/tests/system-test/1-insert/insertWithMoreVgroup.py
index a7d17bc41ebde9ed6da44c94ddd3265ec0777fa0..b583ee93e8112116cecdc0cbfd0adaa59d661ad1 100644
--- a/tests/system-test/1-insert/insertWithMoreVgroup.py
+++ b/tests/system-test/1-insert/insertWithMoreVgroup.py
@@ -12,6 +12,7 @@
 # -*- coding: utf-8 -*-
 
 import sys
+import os
 import threading
 import multiprocessing as mp
 from numpy.lib.function_base import insert
@@ -66,14 +67,19 @@ class TDTestCase:
     # run case   
     def run(self):
 
-        #  test base case
-        self.test_case1()
-        tdLog.debug(" LIMIT test_case1 ............ [OK]")
+        # #  test base case
+        # self.test_case1()
+        # tdLog.debug(" LIMIT test_case1 ............ [OK]")
 
-        # test advance case
+        # test case
         # self.test_case2()
         # tdLog.debug(" LIMIT test_case2 ............ [OK]")
 
+        # test case
+        self.test_case3()
+        tdLog.debug(" LIMIT test_case3 ............ [OK]")
+
+
     # stop 
     def stop(self):
         tdSql.close()
@@ -115,11 +121,12 @@ class TDTestCase:
         return cur
 
     def new_create_tables(self,dbname,vgroups,stbname,tcountStart,tcountStop):
-        host = "chenhaoran02"
+        host = "localhost"
         buildPath = self.getBuildPath()
         config = buildPath+ "../sim/dnode1/cfg/"
         
         tsql=self.newcur(host,config)
+        tsql.execute("drop database if exists %s"%dbname)
         tsql.execute("create database %s vgroups %d"%(dbname,vgroups))
         tsql.execute("use %s" %dbname)
         tsql.execute("create stable %s(ts timestamp, c1 int, c2 binary(10)) tags(t1 int)"%stbname)
@@ -182,7 +189,52 @@ class TDTestCase:
         tdLog.debug("INSERT TABLE DATA ............ [OK]")
         return
 
+    def taosBench(self,jsonFile):
+        buildPath = self.getBuildPath()
+        if (buildPath == ""):
+            tdLog.exit("taosd not found!")
+        else:
+            tdLog.info("taosd found in %s" % buildPath)
+        taosBenchbin = buildPath+ "/build/bin/taosBenchmark"
+        os.system("%s -f %s -y " %(taosBenchbin,jsonFile))
+       
+        return
+    def taosBenchCreate(self,dbname,stbname,vgroups,threadNumbers,count):
+        # count=50000
+        buildPath = self.getBuildPath()
+        if (buildPath == ""):
+            tdLog.exit("taosd not found!")
+        else:
+            tdLog.info("taosd found in %s" % buildPath)
+        taosBenchbin = buildPath+ "/build/bin/taosBenchmark"
+
+        # insert: create one  or mutiple tables per sql and insert multiple rows per sql
+        tdSql.execute("drop database if exists %s"%dbname)
 
+        tdSql.execute("create database %s vgroups %d"%(dbname,vgroups))
+        tdSql.execute("use %s" %dbname)
+    
+        threads = []
+        # threadNumbers=2
+        for i in range(threadNumbers):
+            jsonfile="1-insert/Vgroups%d%d.json"%(vgroups,i)
+            os.system("cp -f 1-insert/manyVgroups.json   %s"%(jsonfile))
+            os.system("sed -i 's/\"name\": \"db\",/\"name\": \"%s%d\",/g' %s"%(dbname,i,jsonfile))
+            os.system("sed -i 's/\"childtable_count\": 300000,/\"childtable_count\": %d,/g' %s "%(count,jsonfile))
+            os.system("sed -i 's/\"name\": \"stb1\",/\"name\":  \"%s%d\",/g' %s "%(stbname,i,jsonfile))
+            os.system("sed -i 's/\"childtable_prefix\": \"stb1_\",/\"childtable_prefix\": \"%s%d_\",/g' %s "%(stbname,i,jsonfile))
+            threads.append(mp.Process(target=self.taosBench, args=("%s"%jsonfile,))) 
+        start_time = time.time()
+        for tr in threads:
+            tr.start()
+        for tr in threads:
+            tr.join()
+        end_time = time.time()
+
+        spendTime=end_time-start_time
+        speedCreate=count/spendTime
+        tdLog.debug("spent %.2fs to create 1 stable and %d table, create speed is %.2f table/s... [OK]"% (spendTime,count,speedCreate))
+        return
     # test case1 base 
     def test_case1(self):
         tdLog.debug("-----create database and tables test------- ")
@@ -284,6 +336,12 @@ class TDTestCase:
                 
         return
 
+    def test_case3(self):
+
+        self.taosBenchCreate("db1", "stb1", 1, 2, 1*50000)
+
+        return 
+
 #
 # add case with filename
 #
diff --git a/tests/system-test/1-insert/manyVgroups.json b/tests/system-test/1-insert/manyVgroups.json
new file mode 100644
index 0000000000000000000000000000000000000000..df6f1163e84a6c9e62464b276e3a51902fbe9aee
--- /dev/null
+++ b/tests/system-test/1-insert/manyVgroups.json
@@ -0,0 +1,76 @@
+{
+    "filetype": "insert",
+    "cfgdir": "/etc/taos/",
+    "host": "test216",
+    "port": 6030,
+    "user": "root",
+    "password": "taosdata",
+    "thread_count": 8,
+    "thread_count_create_tbl": 8,
+    "result_file": "./insert_res.txt",
+    "confirm_parameter_prompt": "no",
+    "insert_interval": 0,
+    "interlace_rows": 100000,
+    "num_of_records_per_req": 100000,
+    "databases": [
+        {
+            "dbinfo": {
+                "name": "db",
+                "drop": "yes",
+                "vgroups": 1
+            },
+            "super_tables": [
+                {
+                    "name": "stb1",
+                    "child_table_exists": "no",
+                    "childtable_count": 300000,
+                    "childtable_prefix": "stb1_",
+                    "auto_create_table": "no",
+                    "batch_create_tbl_num": 50000,
+                    "data_source": "rand",
+                    "insert_mode": "taosc",
+                    "insert_rows": 0,
+                    "interlace_rows": 0,
+                    "insert_interval": 0,
+                    "max_sql_len": 10000000,
+                    "disorder_ratio": 0,
+                    "disorder_range": 1000,
+                    "timestamp_step": 10,
+                    "sample_format": "csv",
+                    "use_sample_ts": "no",
+                    "tags_file": "",
+                    "columns": [
+                        {
+                            "type": "INT"
+                        },
+                        {
+                            "type": "DOUBLE",
+                            "count": 100
+                        },
+                        {
+                            "type": "BINARY",
+                            "len": 400,
+                            "count": 10
+                        },
+                        {
+                            "type": "nchar",
+                            "len": 200,
+                            "count": 20
+                        }
+                    ],
+                    "tags": [
+                        {
+                            "type": "TINYINT",
+                            "count": 2
+                        },
+                        {
+                            "type": "BINARY",
+                            "len": 16,
+                            "count": 2
+                        }
+                    ]
+                }
+            ]
+        }
+    ]
+}
\ No newline at end of file
diff --git a/tests/system-test/1-insert/mutipythonnodebugtaosd.py b/tests/system-test/1-insert/mutipythonnodebugtaosd.py
new file mode 100644
index 0000000000000000000000000000000000000000..73d70b43488b57345a822f971190f4e62212f865
--- /dev/null
+++ b/tests/system-test/1-insert/mutipythonnodebugtaosd.py
@@ -0,0 +1,299 @@
+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+
+import sys
+import os
+selfPath = os.path.dirname(os.path.realpath(__file__))
+utilPath="%s/../../pytest/"%selfPath
+import threading
+import multiprocessing as mp
+from numpy.lib.function_base import insert
+import taos
+sys.path.append(utilPath)
+from util.log import *
+from util.cases import *
+from util.sql import *
+import numpy as np
+import datetime as dt
+import time
+# constant define
+WAITS = 5 # wait seconds
+
+class TDTestCase:
+    #
+    # --------------- main frame -------------------
+    #
+    
+    def caseDescription(self):
+        '''
+        limit and offset keyword function test cases;
+        case1: limit offset base function test
+        case2: offset return valid
+        '''
+        return 
+
+    def getBuildPath(self):
+        selfPath = os.path.dirname(os.path.realpath(__file__))
+
+        if ("community" in selfPath):
+            projPath = selfPath[:selfPath.find("community")]
+        else:
+            projPath = selfPath[:selfPath.find("tests")]
+
+        for root, dirs, files in os.walk(projPath):
+            if ("taosd" in files):
+                rootRealPath = os.path.dirname(os.path.realpath(root))
+                if ("packaging" not in rootRealPath):
+                    buildPath = root[:len(root)-len("/build/bin")]
+                    break
+        return buildPath
+
+    # init
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        # tdSql.init(conn.cursor())
+        # tdSql.prepare()
+        # self.create_tables();
+        self.ts = 1500000000000
+
+
+    # run case   
+    def run(self):
+
+        #  test base case
+        self.test_case1()
+        tdLog.debug(" LIMIT test_case1 ............ [OK]")
+
+        # test advance case
+        # self.test_case2()
+        # tdLog.debug(" LIMIT test_case2 ............ [OK]")
+
+    # stop 
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+    # --------------- case  -------------------
+
+    # create tables
+    def create_tables(self,dbname,stbname,count):
+        tdSql.execute("use %s" %dbname)
+        tdSql.execute("create stable %s(ts timestamp, c1 int, c2 binary(10)) tags(t1 int)"%stbname)
+        pre_create = "create table"
+        sql = pre_create
+        tdLog.debug("doing create one  stable %s and %d  child table in %s  ..." %(stbname, count ,dbname))
+        # print(time.time())
+        exeStartTime=time.time()
+        for i in range(count):
+            sql += " %s_%d using %s tags(%d)"%(stbname,i,stbname,i+1)
+            if i >0 and i%3000 == 0:
+                tdSql.execute(sql)
+                sql = pre_create
+        # print(time.time())
+        # end sql        
+        if sql != pre_create:
+            tdSql.execute(sql)
+        exeEndTime=time.time()
+        spendTime=exeEndTime-exeStartTime
+        speedCreate=count/spendTime
+        tdLog.debug("spent %.2fs to create 1 stable and %d table, create speed is %.2f table/s... [OK]"% (spendTime,count,speedCreate))
+        return
+
+    def newcur(self,host,cfg):
+        user = "root"
+        password = "taosdata"
+        port =6030 
+        con=taos.connect(host=host, user=user, password=password, config=cfg ,port=port)
+        cur=con.cursor()
+        print(cur)
+        return cur
+
+    def new_create_tables(self,dbname,vgroups,stbname,tcountStart,tcountStop):
+        host = "127.0.0.1"
+        buildPath = self.getBuildPath()
+        config = buildPath+ "../sim/dnode1/cfg/"
+        
+        tsql=self.newcur(host,config)
+        tsql.execute("drop database  if exists %s" %(dbname))
+        tsql.execute("create database if not exists  %s vgroups %d"%(dbname,vgroups))
+        tsql.execute("use %s" %dbname)
+        tsql.execute("create stable  %s(ts timestamp, c1 int, c2 binary(10)) tags(t1 int)"%stbname)
+
+        pre_create = "create table"
+        sql = pre_create
+        tcountStop=int(tcountStop)
+        tcountStart=int(tcountStart)
+        count=tcountStop-tcountStart
+
+        tdLog.debug("doing create one  stable %s and %d  child table in %s  ..." %(stbname, count ,dbname))
+        # print(time.time())
+        exeStartTime=time.time()
+        # print(type(tcountStop),type(tcountStart))
+        for i in range(tcountStart,tcountStop):
+            sql += " %s_%d using %s tags(%d)"%(stbname,i,stbname,i+1)
+            if i >0 and i%20000 == 0:
+                # print(sql)
+                tsql.execute(sql)
+                sql = pre_create
+        # print(time.time())
+        # end sql        
+        if sql != pre_create:
+            # print(sql)
+            tsql.execute(sql)
+        exeEndTime=time.time()
+        spendTime=exeEndTime-exeStartTime
+        speedCreate=count/spendTime
+        # tdLog.debug("spent %.2fs to create 1 stable and %d table, create speed is %.2f table/s... [OK]"% (spendTime,count,speedCreate))
+        return
+
+
+
+    # insert data
+    def insert_data(self, dbname, stbname, ts_start, tcountStart,tcountStop,rowCount):
+        tdSql.execute("use %s" %dbname)
+        pre_insert = "insert into "
+        sql = pre_insert
+        tcount=tcountStop-tcountStart
+        allRows=tcount*rowCount
+        tdLog.debug("doing insert data into stable:%s rows:%d ..."%(stbname, allRows))
+        exeStartTime=time.time()
+        for i in range(tcountStart,tcountStop):
+            sql += " %s_%d values "%(stbname,i)
+            for j in range(rowCount):
+                sql += "(%d, %d, 'taos_%d') "%(ts_start + j*1000, j, j)
+                if j >0 and j%5000 == 0:
+                    # print(sql)
+                    tdSql.execute(sql)
+                    sql = "insert into %s_%d values " %(stbname,i)
+        # end sql        
+        if sql != pre_insert:
+            # print(sql)
+            tdSql.execute(sql)
+        exeEndTime=time.time()
+        spendTime=exeEndTime-exeStartTime
+        speedInsert=allRows/spendTime
+        # tdLog.debug("spent %.2fs to INSERT  %d rows , insert rate is  %.2f rows/s... [OK]"% (spendTime,allRows,speedInsert))
+
+        tdLog.debug("INSERT TABLE DATA ............ [OK]")
+        return
+
+
+    # test case1 base 
+    def test_case1(self):
+        tdLog.debug("-----create database and tables test------- ")
+        # tdSql.execute("drop database if exists db1")
+        # tdSql.execute("drop database if exists db4")
+        # tdSql.execute("drop database if exists db6")
+        # tdSql.execute("drop database if exists db8")
+        # tdSql.execute("drop database if exists db12")
+        # tdSql.execute("drop database if exists db16")
+
+        #create database and tables;
+
+        # tdSql.execute("create database db11 vgroups 1")
+        # # self.create_tables("db1", "stb1", 30*10000)
+        # tdSql.execute("use db1")
+        # tdSql.execute("create stable stb1(ts timestamp, c1 int, c2 binary(10)) tags(t1 int)")
+
+        # tdSql.execute("create database db12 vgroups 1")
+        # # self.create_tables("db1", "stb1", 30*10000)
+        # tdSql.execute("use db1")
+
+        # t1 = threading.Thread(target=self.new_create_tables("db1", "stb1", 15*10000), args=(1,))
+        # t2 = threading.Thread(target=self.new_create_tables("db1", "stb1", 15*10000), args=(2,))
+        # t1 = mp.Process(target=self.new_create_tables, args=("db1", "stb1", 0,count/2,))
+        # t2 = mp.Process(target=self.new_create_tables, args=("db1", "stb1", count/2,count,))
+
+        count=500000
+        vgroups=1
+        threads = []
+        threadNumbers=2
+        for i in range(threadNumbers):
+            threads.append(mp.Process(target=self.new_create_tables, args=("db1%d"%i, vgroups, "stb1", 0,count,))) 
+        start_time = time.time()
+        for tr in threads:
+            tr.start()
+        for tr in threads:
+            tr.join()
+        end_time = time.time()
+        spendTime=end_time-start_time
+        speedCreate=count/spendTime
+        tdLog.debug("spent %.2fs to create 1 stable and %d table, create speed is %.2f table/s... [OK]"% (spendTime,count,speedCreate))
+        # self.new_create_tables("db1", "stb1", 15*10000)
+        # self.new_create_tables("db1", "stb1", 15*10000)
+
+        # tdSql.execute("create database db4 vgroups 4")
+        # self.create_tables("db4", "stb4", 30*10000)
+
+        # tdSql.execute("create database db6 vgroups 6")
+        # self.create_tables("db6", "stb6", 30*10000)
+
+        # tdSql.execute("create database db8 vgroups 8")
+        # self.create_tables("db8", "stb8", 30*10000)
+
+        # tdSql.execute("create database db12 vgroups 12")
+        # self.create_tables("db12", "stb12", 30*10000)
+
+        # tdSql.execute("create database db16 vgroups 16")
+        # self.create_tables("db16", "stb16", 30*10000)
+        return 
+
+    # test case2 base:insert data
+    def test_case2(self):
+
+        tdLog.debug("-----insert data test------- ")
+        # drop database
+        tdSql.execute("drop database if exists db1")
+        tdSql.execute("drop database if exists db4")
+        tdSql.execute("drop database if exists db6")
+        tdSql.execute("drop database if exists db8")
+        tdSql.execute("drop database if exists db12")
+        tdSql.execute("drop database if exists db16")
+
+        #create database and tables;
+
+        tdSql.execute("create database db1 vgroups 1")
+        self.create_tables("db1", "stb1", 1*100)
+        self.insert_data("db1", "stb1", self.ts, 1*50,1*10000)
+        
+
+        tdSql.execute("create database db4 vgroups 4")
+        self.create_tables("db4", "stb4", 1*100)
+        self.insert_data("db4", "stb4", self.ts, 1*100,1*10000)
+
+        tdSql.execute("create database db6 vgroups 6")
+        self.create_tables("db6", "stb6", 1*100)
+        self.insert_data("db6", "stb6", self.ts, 1*100,1*10000)
+
+        tdSql.execute("create database db8 vgroups 8")
+        self.create_tables("db8", "stb8", 1*100)
+        self.insert_data("db8", "stb8", self.ts, 1*100,1*10000)
+
+        tdSql.execute("create database db12 vgroups 12")
+        self.create_tables("db12", "stb12", 1*100)
+        self.insert_data("db12", "stb12", self.ts, 1*100,1*10000)
+
+        tdSql.execute("create database db16 vgroups 16")
+        self.create_tables("db16", "stb16", 1*100)
+        self.insert_data("db16", "stb16", self.ts, 1*100,1*10000)
+                
+        return
+
+#
+# add case with filename
+#
+# tdCases.addWindows(__file__, TDTestCase())
+# tdCases.addLinux(__file__, TDTestCase())
+case=TDTestCase()
+case.test_case1()
\ No newline at end of file