diff --git a/core/general-server/op/general_reader_op.cpp b/core/general-server/op/general_reader_op.cpp
index 2d17cec039c393e0ffbdc6b0290bc21c35a6aecd..3a4aa72baac753423bf126358c72b50352a2531d 100644
--- a/core/general-server/op/general_reader_op.cpp
+++ b/core/general-server/op/general_reader_op.cpp
@@ -103,14 +103,12 @@ int GeneralReaderOp::inference() {
   VLOG(2) << "print general model config done.";
 
   // check
-  /*
   res->reader_status = conf_check(req, model_config);
   if (res->reader_status != 0) {
     LOG(INFO) << "model conf of server:";
     resource.print_general_model_config(model_config);
     return 0;
   }
-  */
   // package tensor
 
   elem_type.resize(var_num);
@@ -202,15 +200,6 @@ int GeneralReaderOp::inference() {
   }
 
   VLOG(2) << "read data from client success";
-  // print request
-  /*
-  std::ostringstream oss;
-  int64_t *example = reinterpret_cast<int64_t *>((*in)[0].data.data());
-  for (int i = 0; i < 10; i++) {
-    oss << *(example + i) << " ";
-  }
-  VLOG(2) << "head element of first feed var : " << oss.str();
-  */
   return 0;
 }
 DEFINE_OP(GeneralReaderOp);
diff --git a/core/sdk-cpp/include/predictor_sdk.h b/core/sdk-cpp/include/predictor_sdk.h
index bcc8ab83b080fac90257695439e6b347529034c3..6b2e8a2c4ed7b6cef219ebce1a8016b780b795a7 100644
--- a/core/sdk-cpp/include/predictor_sdk.h
+++ b/core/sdk-cpp/include/predictor_sdk.h
@@ -49,11 +49,6 @@ class PredictorApi {
   }
 
   Predictor* fetch_predictor(std::string ep_name) {
-    std::map<std::string, Endpoint*>::iterator iter;
-    VLOG(2) << "going to print predictor names";
-    for (iter = _endpoints.begin(); iter != _endpoints.end(); ++iter) {
-      VLOG(2) << "name: " << iter->first;
-    }
     std::map<std::string, Endpoint*>::iterator it = _endpoints.find(ep_name);
     if (it == _endpoints.end() || !it->second) {
       LOG(ERROR) << "Failed fetch predictor:"