Python3 subprocess.Popen 调用次数太多出现OSError: [Errno 24] Too many open files

[chensheng2611]

import os,time
from subprocess import *
from multiprocessing import *

def run_shell_cmd(cmd_str, index):
    print('run shell cmd index %d'%(index,))
    proc = Popen(['/bin/zsh', '-c', cmd_str],stdout=PIPE)
    time.sleep(1)
    outs = proc.stdout.readlines()
    proc.stdout.close()
    proc.terminate()
    return 

def multi_process_exc():
    pool = 
    cmd_str = 'ps -ef | grep chromium'
    for x in range(5000):   #循环次数超过一定次数就会出现下面的问题
        p = Process(target=run_shell_cmd, args=(cmd_str,x))
        p.start()
        pool.append(p)
    
    for p in pool:
        p.join()
if __name__ == "__main__":
    multi_process_exc()

运行结果如下

Process Process-4078:
Traceback (most recent call last):
  File "/usr/lib/python3.8/multiprocessing/process.py", line 315, in _bootstrap
    self.run()
  File "/usr/lib/python3.8/multiprocessing/process.py", line 108, in run
    self._target(*self._args, **self._kwargs)
  File "test.py", line 8, in run_shell_cmd
    proc = Popen(['/bin/zsh', '-c', cmd_str], stdout=PIPE)
  File "/usr/lib/python3.8/subprocess.py", line 854, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/lib/python3.8/subprocess.py", line 1603, in _execute_child
    errpipe_read, errpipe_write = os.pipe()
OSError: [Errno 24] Too many open files

系统环境：
Linux DJ 5.4.28-1-MANJARO #1 SMP PREEMPT Wed Mar 25 12:45:29 UTC 2020 x86_64 GNU/Linux
Python3.8

[xxxtentacition]

@chensheng2611 请问解决了吗

[chensheng2611]

自己顶一下，实际环境中就是子进程会执行shell命令读取当前所有进程。 进程开的过多的话就超过系统限制，lsof查看有大量PIPE未关闭，试过各种方法也关闭不了，不知哪位大神帮忙解答下

[Binary_8]

请问解决了吗？这个问题