diff --git a/tests/perftest-scripts/coverage_test.sh b/tests/perftest-scripts/coverage_test.sh
index 152e20756b848a342f0994323274ff4130d0fe92..6644cc62a3ecc7863d99d2e6b9a61affa1485b26 100755
--- a/tests/perftest-scripts/coverage_test.sh
+++ b/tests/perftest-scripts/coverage_test.sh
@@ -32,7 +32,14 @@ function buildTDengine {
 		echo "repo need to pull"
     git reset --hard
 		git pull
+  fi
 
+  [ -d $TDENGINE_DIR/debug ] || mkdir $TDENGINE_DIR/debug
+  cd $TDENGINE_DIR/debug
+  [ -f $TDENGINE_DIR/debug/build/bin/taosd ] || need_rebuild=true
+
+  if $need_rebuild ; then
+    echo "rebuild.."
 		LOCAL_COMMIT=`git rev-parse --short @`
 
 		rm -rf *
@@ -46,10 +53,9 @@ function buildTDengine {
 function runGeneralCaseOneByOne {
 	while read -r line; do
 		if [[ $line =~ ^./test.sh* ]]; then
-			general_case=`echo $line | grep -w general`
+			case=`echo $line | grep -w "general\|unique\/mnode\/mgmt33.sim\|unique\/stable\/dnode3.sim\|unique\/cluster\/balance3.sim\|unique\/arbitrator\/offline_replica2_alterTable_online.sim"|awk '{print $NF}'`
 
-			if [ -n "$general_case" ]; then
-				case=`echo $line |grep general| awk '{print $NF}'`
+			if [ -n "$case" ]; then
 				./test.sh -f $case > /dev/null 2>&1 && \
 				echo -e "${GREEN}$case success${NC}" | tee -a $TDENGINE_COVERAGE_REPORT || \
 				echo -e "${RED}$case failed${NC}" | tee -a $TDENGINE_COVERAGE_REPORT
@@ -90,14 +96,14 @@ function runTest {
 	sleep 10
 
 	cd $TDENGINE_DIR/src/connector/jdbc
-	mvn clean package
-	mvn test | tee -a $TDENGINE_COVERAGE_REPORT
+	mvn clean package > /dev/null 2>&1
+	mvn test > /dev/null 2>&1 | tee -a $TDENGINE_COVERAGE_REPORT
 
 	# Test C Demo
 	stopTaosd
 	$TDENGINE_DIR/debug/build/bin/taosd -c $TDENGINE_DIR/debug/test/cfg > /dev/null &
 	sleep 10
-	yes | $TDENGINE_DIR/debug/build/bin/demo 127.0.0.1 | tee -a $TDENGINE_COVERAGE_REPORT
+	yes | $TDENGINE_DIR/debug/build/bin/demo 127.0.0.1 > /dev/null 2>&1 | tee -a $TDENGINE_COVERAGE_REPORT
 
 	# Test waltest
 	dataDir=`grep dataDir $TDENGINE_DIR/debug/test/cfg/taos.cfg|awk '{print $2}'`
@@ -105,14 +111,14 @@ function runTest {
 	echo "dataDir: $dataDir" | tee -a $TDENGINE_COVERAGE_REPORT
 	echo "walDir: $walDir" | tee -a $TDENGINE_COVERAGE_REPORT
 	if [ -n "$walDir" ]; then
-		yes | $TDENGINE_DIR/debug/build/bin/waltest -p $walDir | tee -a $TDENGINE_COVERAGE_REPORT
+		yes | $TDENGINE_DIR/debug/build/bin/waltest -p $walDir > dev/null 2>&1 | tee -a $TDENGINE_COVERAGE_REPORT
 	fi
 
   # run Unit Test
   echo "Run Unit Test: utilTest, queryTest and cliTest"
-  $TDENGINE_DIR/debug/build/bin/utilTest > /dev/null && echo "utilTest pass!" || echo "utilTest failed!"
-  $TDENGINE_DIR/debug/build/bin/queryTest > /dev/null && echo "queryTest pass!" || echo "queryTest failed!"
-  $TDENGINE_DIR/debug/build/bin/cliTest > /dev/null && echo "cliTest pass!" || echo "cliTest failed!"
+  $TDENGINE_DIR/debug/build/bin/utilTest > /dev/null 2>&1 && echo "utilTest pass!" || echo "utilTest failed!"
+  $TDENGINE_DIR/debug/build/bin/queryTest > /dev/null 2>&1 && echo "queryTest pass!" || echo "queryTest failed!"
+  $TDENGINE_DIR/debug/build/bin/cliTest > /dev/null 2>&1 && echo "cliTest pass!" || echo "cliTest failed!"
 
 	stopTaosd
 }
diff --git a/tests/perftest-scripts/tdinternal_coverage_test.sh b/tests/perftest-scripts/tdinternal_coverage_test.sh
index 91d204baf9822804f9106712c272d728e5747c7b..654c06cd0b8ae28bdb05520ffb4d041ca9b82110 100755
--- a/tests/perftest-scripts/tdinternal_coverage_test.sh
+++ b/tests/perftest-scripts/tdinternal_coverage_test.sh
@@ -100,23 +100,30 @@ function runTest {
 	sleep 10
 
 	cd $TDINTERNAL_DIR/community/src/connector/jdbc
-	mvn clean package
-	mvn test | tee -a $TDINTERNAL_COVERAGE_REPORT
+	mvn clean package > /dev/null
+	mvn test > /dev/null | tee -a $TDINTERNAL_COVERAGE_REPORT
 
 	# Test C Demo
 	stopTaosd
 	$TDINTERNAL_DIR/debug/build/bin/taosd -c $TDINTERNAL_DIR/debug/test/cfg > /dev/null &
 	sleep 10
-	yes | $TDINTERNAL_DIR/debug/build/bin/demo 127.0.0.1 | tee -a $TDINTERNAL_COVERAGE_REPORT
+	yes | $TDINTERNAL_DIR/debug/build/bin/demo 127.0.0.1 > /dev/null | tee -a $TDINTERNAL_COVERAGE_REPORT
 
 	# Test waltest
 	dataDir=`grep dataDir $TDINTERNAL_DIR/debug/test/cfg/taos.cfg|awk '{print $2}'`
 	walDir=`find $dataDir -name "wal"|head -n1`
-	echo "dataDir: $dataDir\nwalDir: $walDir" | tee -a $TDINTERNAL_COVERAGE_REPORT
+	echo "dataDir: $dataDir" | tee -a $TDINTERNAL_COVERAGE_REPORT
+  echo "walDir: $walDir" | tee -a $TDINTERNAL_COVERAGE_REPORT
 	if [ -n "$walDir" ]; then
-		yes | $TDINTERNAL_DIR/debug/build/bin/waltest -p $walDir | tee -a $TDINTERNAL_COVERAGE_REPORT
+		yes | $TDINTERNAL_DIR/debug/build/bin/waltest -p $walDir > /dev/null | tee -a $TDINTERNAL_COVERAGE_REPORT
 	fi
 
+  # run Unit Test
+  echo "Run Unit Test: utilTest, queryTest and cliTest"
+  $TDINTERNAL_DIR/debug/build/bin/utilTest > /dev/null 2>&1 && echo "utilTest pass!" || echo "utilTest failed!"
+  $TDINTERNAL_DIR/debug/build/bin/queryTest > /dev/null 2>&1 && echo "queryTest pass!" || echo "queryTest failed!"
+  $TDINTERNAL_DIR/debug/build/bin/cliTest > /dev/null 2>&1 && echo "cliTest pass!" || echo "cliTest failed!"
+
 	stopTaosd
 }