[script]update service startup script

script/assembly/server/bin/startup.sh

@@ -66,9 +66,9 @@ if [ ! -d $LOGS_DIR ]; then
 fi
 
 # JVM Configuration
-JAVA_OPTS=" -Djava.awt.headless=true -Djava.net.preferIPv4Stack=true -Duser.timezone=Asia/Shanghai"
+JAVA_OPTS=" -Duser.timezone=Asia/Shanghai"
 
-JAVA_MEM_OPTS=" -server -Xms256m -Xmx1024m -XX:SurvivorRatio=2 -XX:+UseParallelGC "
+JAVA_MEM_OPTS=" -server -XX:SurvivorRatio=6 -XX:+UseParallelGC "
 
 # 加载外部log文件的配置
 LOG_IMPL_FILE=logback-spring.xml