+
+elapsed_time=0
+for i in range(10):
+ t = time.process_time()
+ proc=subprocess.Popen("scp lena4.jpg bilbo:/tmp", shell=True)
+ proc.wait()
+ elapsed_time += time.process_time() - t
+
+print("ssh normal",elapsed_time)
+
+
+elapsed_time=0
+for i in range(10):
+ t = time.process_time()
+ proc=subprocess.Popen("scp lena5.jpg bilbo:/tmp", shell=True)
+ proc.wait()
+ elapsed_time += time.process_time() - t
+
+print("ssh reduce",elapsed_time)