diff --git a/tests/perftest-scripts/tdengineTestWriteLoop.sh b/tests/perftest-scripts/tdengineTestWriteLoop.sh
index e1ee4418dccccb91ab7ace4696efb6864c3c0ffb..cb9d87d0c19fc171ee87c35b96ad47cd8dbf3cf7 100755
--- a/tests/perftest-scripts/tdengineTestWriteLoop.sh
+++ b/tests/perftest-scripts/tdengineTestWriteLoop.sh
@@ -24,22 +24,46 @@ function runTest {
   for r in ${!rowsPerRequest[@]}; do
     for c in `seq 1 $clients`; do
       totalRPR=0
-      OUTPUT_FILE=tdengineTestWrite-RPR${rowsPerRequest[$r]}-clients$c.out
+      if $v16 ; then
+        OUTPUT_FILE=tdengineTestWrite-v16-RPR${rowsPerRequest[$r]}-clients$c.out
+      else
+        OUTPUT_FILE=tdengineTestWrite-v20-RPR${rowsPerRequest[$r]}-clients$c.out
+      fi
 
       for i in `seq 1 $NUM_LOOP`; do
-	restartTaosd
-        $TAOSD_DIR/taos -s "drop database db" > /dev/null 2>&1
-        printTo "loop i:$i, $TDTEST_DIR/tdengineTest \
+        if ! $printresultonly ; then
+          restartTaosd
+          $TAOSD_DIR/taos -s "drop database db" > /dev/null 2>&1
+
+          if $v16 ; then
+            printTo "loop i:$i, $TDTEST_DIR/tdengineTest \
 	      -dataDir $DATA_DIR \
 	      -numOfFiles $NUM_OF_FILES \
-	      -w -clients $c \
-	      -rowsPerRequest ${rowsPerRequest[$r]}"
-        $TDTEST_DIR/tdengineTest \
-          -dataDir $DATA_DIR \
-          -numOfFiles $NUM_OF_FILES \
-          -w -clients $c \
-          -rowsPerRequest ${rowsPerRequest[$r]} \
-	  | tee $OUTPUT_FILE
+	      -writeClients $c \
+	      -rowsPerRequest ${rowsPerRequest[$r]} \
+              | tee $OUTPUT_FILE"
+            $TDTEST_DIR/tdengineTest \
+              -dataDir $DATA_DIR \
+              -numOfFiles $NUM_OF_FILES \
+              -writeClients $c \
+              -rowsPerRequest ${rowsPerRequest[$r]} \
+              | tee $OUTPUT_FILE
+          else
+            printTo "loop i:$i, $TDTEST_DIR/tdengineTest \
+              -dataDir $DATA_DIR \
+              -numOfFiles $NUM_OF_FILES \
+              -w -clients $c \
+              -rowsPerRequest ${rowsPerRequest[$r]} \
+              | tee $OUTPUT_FILE"
+            $TDTEST_DIR/tdengineTest \
+              -dataDir $DATA_DIR \
+              -numOfFiles $NUM_OF_FILES \
+              -w -clients $c \
+              -rowsPerRequest ${rowsPerRequest[$r]} \
+	      | tee $OUTPUT_FILE
+          fi
+        fi
+
         RPR=`cat $OUTPUT_FILE  | grep speed | awk '{print $(NF-1)}'`
         totalRPR=`echo "scale=4; $totalRPR + $RPR" | bc`
         printTo "rows:${rowsPerRequest[$r]}, clients:$c, i:$i RPR:$RPR"
@@ -86,25 +110,30 @@ function restartTaosd {
 
 ################ Main ################
 
-master=false
-develop=true
+v16=false
+v20=true
 verbose=false
 clients=1
+printresultonly=false
 
 while : ; do
   case $1 in
+    printresultonly)
+      printresultonly=true
+      shift ;;
+
     -v)
       verbose=true
       shift ;;
 
-    master)
-      master=true
-      develop=false
+    v16)
+      v16=true
+      v20=false
       shift ;;
 
-    develop)
-      master=false
-      develop=true
+    v20)
+      v16=false
+      v20=true
       shift ;;
 
     -c)
@@ -120,19 +149,24 @@ while : ; do
   esac
 done
 
-if $master ; then
-  echo "Test master branch.."
-  cp /mnt/root/cfg/master/taos.cfg /etc/taos/taos.cfg
-  WORK_DIR=/mnt/root/TDengine.master
+if $v16 ; then
+  echo "Test v16 branch.."
+  WORK_DIR=/mnt/root/TDengine.v16
+  cp /mnt/root/cfg/v16/taos.cfg /etc/taos/taos.cfg
 else
-  echo "Test develop branch.."
-  cp /mnt/root/cfg/develop/taos.cfg /etc/taos/taos.cfg
+  echo "Test v20 branch.."
+  cp /mnt/root/cfg/v20/taos.cfg /etc/taos/taos.cfg
   WORK_DIR=/mnt/root/TDengine
 fi
 
 TAOSD_DIR=$WORK_DIR/debug/build/bin
 TDTEST_DIR=$WORK_DIR/tests/comparisonTest/tdengine
 
+if [ ! -f $TDTEST_DIR/tdengineTest ]; then
+  echo "Please build tdengineTest first!"
+  exit 1
+fi
+
 runTest
 
 echo "Test done!"