redhat7.3 python3.5下线程一直在增加

[byron0416]

线程一直在增加，最后内存耗尽。
Threads: 168 total, 0 running, 168 sleeping, 0 stopped, 0 zombie
%Cpu(s): 8.3 us, 0.3 sy, 0.0 ni, 91.3 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 1016244 total, 297844 free, 201716 used, 516684 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 625336 avail Mem

[byron0416]

所有线程堆栈都一样
(gdb) py-bt
Traceback (most recent call first):
<built-in method acquire of _thread.lock object at remote 0x7f69a47024b8>
File "/usr/lib/python3.5/threading.py", line 293, in wait
waiter.acquire()
File "/usr/lib/python3.5/queue.py", line 164, in get
self.not_empty.wait()
File "/usr/lib/python3.5/multiprocessing/pool.py", line 108, in worker
task = get()
File "/usr/lib/python3.5/threading.py", line 862, in run
self._target(*self._args, **self._kwargs)
File "/usr/lib/python3.5/threading.py", line 914, in _bootstrap_inner
self.run()
File "/usr/lib/python3.5/threading.py", line 882, in _bootstrap
self._bootstrap_inner()