diff --git a/README.md b/README.md
index a92fded..1f777bd 100644
--- a/README.md
+++ b/README.md
@@ -93,7 +93,7 @@ gpu = apm.collectGpu() # % only supports ios
 if __name__ == '__main__':
   apm = AppPerformanceMonitor(pkgName='com.bilibili.app.in',platform='Android', deviceId='ca6bd5a5', surfaceview=True, noLog=False, pid=None, record=False)
   # apm = AppPerformanceMonitor(pkgName='com.bilibili.app.in', platform='iOS',  deviceId='xxxx', noLog=False, record=False)
-  # duration : second   record: record android screen
+  #record: record android screen
   apm.collectAll() # will generate HTML report
 
 # in other python file
diff --git a/README.zh.md b/README.zh.md
index 6fbdf7d..d486fc9 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -93,7 +93,7 @@ gpu = apm.collectGpu() # % 只支持ios
 if __name__ == '__main__':
   apm = AppPerformanceMonitor(pkgName='com.bilibili.app.in',platform='Android', deviceId='ca6bd5a5', surfaceview=True, noLog=False, pid=None, record=False)
   # apm = AppPerformanceMonitor(pkgName='com.bilibili.app.in', platform='iOS',  deviceId='xxxx', noLog=False, record=False)
-  # duration : 持续执行时间（秒）   record: 是否录制
+  # record: 是否录制
   apm.collectAll() # will generate HTML report
 
 # 在另外的python脚本中终止solox服务可以停止测试
diff --git a/solox/__init__.py b/solox/__init__.py
index 88decb3..811164d 100644
--- a/solox/__init__.py
+++ b/solox/__init__.py
@@ -2,4 +2,4 @@
 
 from __future__ import absolute_import
 
-__version__ = '2.8.1'
+__version__ = '2.8.2'
diff --git a/solox/public/apm.py b/solox/public/apm.py
index 2bbb970..8701c60 100644
--- a/solox/public/apm.py
+++ b/solox/public/apm.py
@@ -439,7 +439,9 @@ def stop(cls):
         config_json = json.loads(open(file=cls.CONIFG_PATH, mode='r').read())
         config_json['run_switch'] = 'off'
         with open(cls.CONIFG_PATH, "w") as file:
-            json.dump(config_json, file)        
+            json.dump(config_json, file) 
+        logger.info('stop solox success')    
+        return True           
 
 class AppPerformanceMonitor(initPerformanceService):
     """for python api"""
@@ -462,8 +464,6 @@ def collectCpu(self):
             appCpuRate, systemCpuRate = _cpu.getCpuRate(noLog=self.noLog)
             result = {'appCpuRate': appCpuRate, 'systemCpuRate': systemCpuRate}
             logger.info(f'cpu: {result}')
-            if time.time() > self.end_time:
-                break
         return result
 
     def collectMemory(self):
@@ -598,10 +598,4 @@ def collectAll(self):
             Scrcpy.stop_record()
             logger.exception(e)
         finally:
-            logger.info('End of testing')
-
-
-if __name__ == '__main__':
-    apm = AppPerformanceMonitor(pkgName='com.tencent.qqmusic',platform='Android', deviceId='BRNUT21B15044184', 
-          surfaceview=True, noLog=False, pid=None, record=False)
-    apm.collectAll()            
\ No newline at end of file
+            logger.info('End of testing')         
\ No newline at end of file