diff --git a/start.sh b/start.sh
index 849d18450fc..bd58fd2d036 100644
--- a/start.sh
+++ b/start.sh
@@ -1,15 +1,98 @@
 #!/bin/bash
 APP=$1
+MANIFEST_OPT=$2
+ALL_OPT=$*
+NEED_REBUILD=0
+
+if [[ $1 == '--rewrite--manifest' ]] || [[ $1 == '--r' ]]  ; then
+   APP=''
+   NEED_REBUILD=1
+ elif [[ $1 == '--rewrite--manifest' ]] || [[ $1 == '--r' ]]  ; then
+   NEED_REBUILD=1
+fi
+
+rebuildManifest() {
+ if [[ $NEED_REBUILD == 1 ]] ; then
+   buildManifest
+ fi
+}
+
+
+buildManifest() {
+ ARCHIVE_JAR='ArchiveManifest.jar'
+ java -jar $ARCHIVE_JAR $ALL_OPT
+ ret=$?
+ if [[ $ret == 0 ]] ; then
+     echo 'rebuild manifest success'
+ else
+     echo 'rebuild manifest fail, log in logs/archive.log'
+ fi
+ return ret
+}
+
+checkMemory() {
+ ALLOW_MEMORY=16000000
+ ALLOW_MAX_MEMORY=32000000
+ MAX_MATESPACE_SIZE=' -XX:MaxMetaspaceSize=512m '
+ total=`cat /proc/meminfo  |grep MemTotal |awk -F ' ' '{print $2}'`
+ # total < ALLOW_MEN
+ if [ $total -lt $ALLOW_MEMORY ] ; then
+    echo "Direct memory must be greater than $ALLOW_MEMORY!, current memory: $total!!"
+    exit
+ fi
+ if [[ $total -gt $ALLOW_MEMORY ]] && [[ $total -lt $ALLOW_MAX_MEMORY ]] ; then
+echo 1 $total
+    MAX_NEW_SIZE=' -XX:NewSize=3072m -XX:MaxNewSize=3072m '
+    MEM_OPT="$MAX_MATESPACE_SIZE $MAX_NEW_SIZE"
+
+ elif [[ $total -gt $ALLOW_MEMORY ]] ; then
+echo 2 $total
+    NEW_RATIO=' -XX:NewSize=6144m -XX:MaxNewSize=6144m '
+    MEM_OPT="$MAX_MATESPACE_SIZE $NEW_RATIO"
+ fi
+}
+
 APP=${APP:-"FullNode"}
 START_OPT=`echo ${@:2}`
 JAR_NAME="$APP.jar"
 MAX_STOP_TIME=60
+MEM_OPT=''
 
 checkpid() {
  pid=`ps -ef | grep $JAR_NAME |grep -v grep | awk '{print $2}'`
  return $pid
 }
 
+checkPath(){
+  path='output-directory/database'
+  flag=1
+  for p in ${ALL_OPT}
+  do
+     if [[ $flag == 0 ]] ; then
+      path=`echo $p`
+      break
+     fi
+     if [[ $p == '-d' || $p == '--database-directory' ]] ; then
+      path=''
+      flag=0
+     fi
+  done
+
+  if [[ -z "${path}" ]]; then
+     echo '-d /path or --database-directory /path'
+     return 1
+  fi
+
+  if [[ -d ${path} ]]; then
+    return 0
+  else
+    echo $path 'not exist'
+    return 1
+  fi
+}
+
+
+
 stopService() {
   count=1
   while [ $count -le $MAX_STOP_TIME ]; do
@@ -32,15 +115,24 @@ stopService() {
 startService() {
  echo `date` >> start.log
  total=`cat /proc/meminfo  |grep MemTotal |awk -F ' ' '{print $2}'`
- xmx=`echo "$total/1024/1024*0.8" | bc |awk -F. '{print $1"g"}'`
+ xmx=`echo "$total/1024/1024*0.6" | bc |awk -F. '{print $1"g"}'`
+ directmem=`echo "$total/1024/1024*0.1" | bc |awk -F. '{print $1"g"}'`
  logtime=`date +%Y-%m-%d_%H-%M-%S`
- nohup java -Xmx$xmx -XX:+UseConcMarkSweepGC -XX:+PrintGCDetails -Xloggc:./gc.log\
- -XX:+PrintGCDateStamps -XX:+CMSParallelRemarkEnabled -XX:ReservedCodeCacheSize=256m\
- -XX:+CMSScavengeBeforeRemark -jar $JAR_NAME $START_OPT -c config.conf  >> start.log 2>&1 &
-
+ export LD_PRELOAD="/usr/lib64/libtcmalloc.so"
+ nohup java -Xms$xmx -Xmx$xmx -XX:+UseConcMarkSweepGC -XX:+PrintGCDetails -Xloggc:./gc.log\
+  -XX:+PrintGCDateStamps -XX:+CMSParallelRemarkEnabled -XX:ReservedCodeCacheSize=256m -XX:+UseCodeCacheFlushing\
+  $MEM_OPT -XX:MaxDirectMemorySize=$directmem -XX:+HeapDumpOnOutOfMemoryError -jar $JAR_NAME $START_OPT -c config.conf  >> start.log 2>&1 &
  pid=`ps -ef |grep $JAR_NAME |grep -v grep |awk '{print $2}'`
  echo "start java-tron with pid $pid on $HOSTNAME"
 }
 
 stopService
+checkPath
+if [[ 0 ==  $? ]] ; then
+ rebuildManifest
+else
+ exit -1
+fi
+sleep 5
+checkMemory
 startService