diff --git a/stetho/agent/drivers/iperf.py b/stetho/agent/drivers/iperf.py
index 6cacd5f..55c27d7 100644
--- a/stetho/agent/drivers/iperf.py
+++ b/stetho/agent/drivers/iperf.py
@@ -60,8 +60,8 @@ class IPerfDriver(object):
                 out_dict.pop()
             out_data = out_dict[-1].split()
             data = dict()
-            data['Bandwidth'] = out_data[-2] + out_data[-1]
-            data['Transfer'] = out_data[-4] + out_data[-3]
+            data['Bandwidth'] = out_data[-2] + ' ' + out_data[-1]
+            data['Transfer'] = out_data[-4] + ' ' + out_data[-3]
             data['Interval'] = out_data[-6]
             return data
         raise Exception('Start iperf failed, please check on the node.')
diff --git a/stetho/stethoclient/agent_api.py b/stetho/stethoclient/agent_api.py
index 14166da..78903a5 100644
--- a/stetho/stethoclient/agent_api.py
+++ b/stetho/stethoclient/agent_api.py
@@ -21,7 +21,6 @@ import sys
 from cliff.command import Command
 from cliff.lister import Lister
 from json import JSONDecoder
-from stetho.stethoclient.constants import AGENT_INFOS
 
 LISTEN_PORT = 9698
 SETUP_LINK_IP_PRE = "192.168.100."
@@ -48,6 +47,16 @@ class Logger():
         print Logger.FAIL + info + Logger.ENDC
 
 
+try:
+    from stetho.stethoclient.constants import AGENT_INFOS
+except:
+    AGENT_INFOS = {
+        'agent-64': "127.0.0.1",
+        'agent-65': "127.0.0.1",
+    }
+    Logger.log_fail("Import stetho configure file fail. Use fake data!")
+
+
 def setup_server(agent):
     log = logging.getLogger(__name__)
     if agent in AGENT_INFOS:
diff --git a/stetho/stethoclient/drivers/iperf_api.py b/stetho/stethoclient/drivers/iperf_api.py
index a212608..558b523 100644
--- a/stetho/stethoclient/drivers/iperf_api.py
+++ b/stetho/stethoclient/drivers/iperf_api.py
@@ -20,7 +20,6 @@ import socket
 import sys
 
 from cliff.lister import Lister
-from stetho.stethoclient.constants import AGENT_INFOS
 
 LISTEN_PORT = 9698
 
@@ -45,6 +44,15 @@ class Logger():
     def log_fail(info):
         print Logger.FAIL + info + Logger.ENDC
 
+try:
+    from stetho.stethoclient.constants import AGENT_INFOS
+except:
+    AGENT_INFOS = {
+        'agent-64': "127.0.0.1",
+        'agent-65': "127.0.0.1",
+    }
+    Logger.log_fail("Import stetho configure file fail. Use fake data!")
+
 
 def setup_server(agent):
     log = logging.getLogger(__name__)