diff --git a/server/wsproxy/app.cc b/server/wsproxy/app.cc
index 96651c9..a117cdd 100644
--- a/server/wsproxy/app.cc
+++ b/server/wsproxy/app.cc
@@ -126,7 +126,7 @@ bool App::Init(int argc, char* argv[])
     InitLog();
     HandlerMgr::Instance()->Init();
     a8::Timer::Instance()->Init();
-    a8::IoLoop::Instance()->Init();
+    a8::IoLoop::Instance()->Init(1);
     JsonDataMgr::Instance()->Init();
 #if MASTER_MODE
     uuid.SetMachineId((node_id - 1) * MAX_NODE_ID + instance_id);