how_many_open_files

how_many_open_files.py

def how_many_open_files():
    import psutil
    pss = psutil.process_iter()
    total_count = 0
    for p in pss:
        if p.num_fds() != len(p.open_files()):
            print u'%s with pid %d has diff fds num %d and open files num %d'%(p.name, p.pid, p.num_fds(), len(p.open_files()))
        total_count += len(p.open_files())
    return total_count

how_many_open_files()

for p in sorted(list(psutil.process_iter()), key=lambda x:len(x.open_files()), reverse=True)[:30]:
    print u'%s %d %d'%(p.name(), len(p.open_files()), p.num_fds())