python多进程和多线程哪个最快

importsys,threading

fromsocketimport*

host="127.0.0.1"iflen(sys.argv)==1elsesys.argv[1]

portList=[iforiinrange(1,1000)]

scanList=[]

lock=threading.Lock()

print('Please waiting... From ',host)

defscanPort(port):

  try:

    tcp=socket(AF_INET,SOCK_STREAM)

    tcp.connect((host,port))

  except:

    pass

  else:

    iflock.acquire():

      print('[+]port',port,'open')

      lock.release()

  finally:

    tcp.close()

forpinportList:

  t=threading.Thread(target=scanPort,args=(p,))

  scanList.append(t)

foriinrange(len(portList)):

  scanList[i].start()

foriinrange(len(portList)):

  scanList[i].join()

importtime

importthreading

importmultiprocessing

max_process=4

max_thread=max_process

deffun(n,n2):

  #cpu密集型

  foriinrange(0,n):

    forjinrange(0,(int)(n*n*n*n2)):

      t=i*j

defthread_main(n2):

  thread_list=[]

  foriinrange(0,max_thread):

    t=threading.Thread(target=fun,args=(50,n2))

    thread_list.append(t)

  start=time.time()

  print(' [+] much thread start')

  foriinthread_list:

    i.start()

  foriinthread_list:

    i.join()

  print(' [-] much thread use ',time.time()-start,'s')

defprocess_main(n2):

  p=multiprocessing.Pool(max_process)

  foriinrange(0,max_process):

    p.apply_async(func=fun,args=(50,n2))

  start=time.time()

  print(' [+] much process start')

  p.close()#关闭进程池

  p.join()#等待所有子进程完毕

  print(' [-] much process use ',time.time()-start,'s')

if__name__=='__main__':

  print("[++]When n=50,n2=0.1:")

  thread_main(0.1)

  process_main(0.1)

  print("[++]When n=50,n2=1:")

  thread_main(1)

  process_main(1)

  print("[++]When n=50,n2=10:")

  thread_main(10)

  process_main(10)