diff --git a/start_unified.py b/start_unified.py
index bd375d4..c694eba 100755
--- a/start_unified.py
+++ b/start_unified.py
@@ -313,7 +313,7 @@ def parse_args():
                        choices=["threads", "greenlets", "gevent"], help="队列工作类型")
     
     # 性能配置
-    parser.add_argument("--profile", type=str, default="balanced",
+    parser.add_argument("--profile", type=str, default="low_memory",
                        choices=["low_memory", "balanced", "high_performance"], help="性能配置文件")
     
     # 监控和重启配置