diff --git a/Dockerfile b/Dockerfile
index 404902334e241d9a53851d514b928468e8a69369..359dd52c0726e9a421138bf3ecf4d6cff3b2036f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,5 @@
 FROM centos:centos6.10
-RUN export http_proxy=http://172.19.56.199:3128 \
-    && export https_proxy=http://172.19.56.199:3128 \
-    && yum -y install wget \
+RUN yum -y install wget \
     && wget http://people.centos.org/tru/devtools-2/devtools-2.repo -O /etc/yum.repos.d/devtoolset-2.repo \
     && yum -y install devtoolset-2-gcc devtoolset-2-gcc-c++ devtoolset-2-binutils \
     && source /opt/rh/devtoolset-2/enable \
diff --git a/python/examples/imdb/test_server.py b/python/examples/imdb/test_server.py
index e77c5fb6a4842bbc455193c67d8494ee6231c90f..7498faabccd2464568468f5ad10538faf481e671 100644
--- a/python/examples/imdb/test_server.py
+++ b/python/examples/imdb/test_server.py
@@ -14,6 +14,8 @@ op_seq_maker.add_op(general_infer_op)
 
 server = Server()
 server.set_op_sequence(op_seq_maker.get_op_sequence())
+server.set_num_threads(12)
 server.load_model_config(sys.argv[1])
-server.prepare_server(workdir="work_dir1", port=9292, device="cpu")
+port = int(sys.argv[2])
+server.prepare_server(workdir="work_dir1", port=port, device="cpu")
 server.run_server()
diff --git a/python/paddle_serving_client/__init__.py b/python/paddle_serving_client/__init__.py
index f400336986780822cffa48927387658c7c13148c..73f67cb82b4817ab3f9fc12269c0cc61ee8eab05 100644
--- a/python/paddle_serving_client/__init__.py
+++ b/python/paddle_serving_client/__init__.py
@@ -104,7 +104,7 @@ class Client(object):
         predictor_sdk = SDKConfig()
         predictor_sdk.set_server_endpoints(endpoints)
         sdk_desc = predictor_sdk.gen_desc()
-        self.client_handle_.create_predictor_by_desc(sdk_desc)
+        self.client_handle_.create_predictor_by_desc(sdk_desc.SerializeToString())
 
     def get_feed_names(self):
         return self.feed_names_
diff --git a/python/paddle_serving_server/__init__.py b/python/paddle_serving_server/__init__.py
index d8b58bbe3cf0ad94ae3bf1c62cf48886218bcc1b..a79980e4a2065d9574309241f1ec16fcafa6f468 100644
--- a/python/paddle_serving_server/__init__.py
+++ b/python/paddle_serving_server/__init__.py
@@ -176,7 +176,7 @@ class Server(object):
     def run_server(self):
         # just run server with system command
         # currently we do not load cube
-        command = "/home/users/dongdaxiang/github_develop/Serving/build_server/core/general-server/serving" \
+        command = "/home/xulongteng/github/Serving/build_server/core/general-server/serving" \
                   " -enable_model_toolkit " \
                   "-inferservice_path {} " \
                   "-inferservice_file {} " \
@@ -187,7 +187,8 @@ class Server(object):
                   "-resource_path {} " \
                   "-resource_file {} " \
                   "-workflow_path {} " \
-                  "-workflow_file {} ".format(
+                  "-workflow_file {} " \
+                  "-bthread_concurrency {} ".format(
                       self.workdir,
                       self.infer_service_fn,
                       self.max_concurrency,
@@ -196,8 +197,9 @@ class Server(object):
                       self.reload_interval_s,
                       self.workdir,
                       self.resource_fn,
-                      self.workdir, 
-                      self.workflow_fn)
+                      self.workdir,
+                      self.workflow_fn,
+                      self.num_threads,)
         os.system(command)