Check the open FD limit for a given process in Linux

Question

I recently had a Linux process which “leaked” file descriptors: It opened them and didn\'t properly close some of them.

If I had monitored this, I could tell – in adv

Answer 1

Python wrapper using the excellent psutil package:

import psutil

for p in psutil.process_iter(attrs=['pid', 'name', 'username', 'num_fds']):
    try:
        soft, hard = p.rlimit(psutil.RLIMIT_NOFILE)
        cur = p.info['num_fds']
        usage = int(cur / soft * 100)
        print('{:>2d}% {}/{}/{}'.format(
            usage,
            p.info['pid'],
            p.info['username'],
            p.info['name'],
            ))
    except psutil.NoSuchProcess:
        pass