diff --git a/agent/java/engine/src/main/java/com/baidu/openrasp/tool/OSUtil.java b/agent/java/engine/src/main/java/com/baidu/openrasp/tool/OSUtil.java
index ae646ece5..9bbdd5f6a 100644
--- a/agent/java/engine/src/main/java/com/baidu/openrasp/tool/OSUtil.java
+++ b/agent/java/engine/src/main/java/com/baidu/openrasp/tool/OSUtil.java
@@ -38,6 +38,7 @@ public class OSUtil {
     public static String getHostName() {
         InetAddress inetAddress;
         try {
+            //getLocalHost这个函数很危险，最好static缓存下来。在某些情况超时5秒时，降雪崩导致所有情况阻塞
             inetAddress = InetAddress.getLocalHost();
         } catch (UnknownHostException e) {
             inetAddress = null;