python - Redis Error 8 connecting localhost:6379. nodename nor servname provided, or not known -

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my environment mac os 10.9.2, python3.3, redis-2.6.9 (64-bit).

i have many threads (nealy 2000) use same redis instance write data, threads throw following exceptions:

during handling of above exception, exception occurred:  traceback (most recent call last):   file "/usr/local/lib/python3.3/site-packages/redis/connection.py", line 250, in connect     sock = self._connect()   file "/usr/local/lib/python3.3/site-packages/redis/connection.py", line 268, in _connect     self.socket_timeout)   file "/usr/local/cellar/python3/3.3.4/frameworks/python.framework/versions/3.3/lib/python3.3/socket.py", line 417, in create_connecti on     res in getaddrinfo(host, port, 0, sock_stream): socket.gaierror: [errno 8] nodename nor servname provided, or not known  traceback (most recent call last):   file "/usr/local/cellar/python3/3.3.4/frameworks/python.framework/versions/3.3/lib/python3.3/threading.py", line 901, in _bootstrap_i nner     self.run()   file "/usr/local/cellar/python3/3.3.4/frameworks/python.framework/versions/3.3/lib/python3.3/threading.py", line 858, in run     self._target(*self._args, **self._kwargs)   file "proxypool.py", line 289, in _efficiency_proxy     self.rdb.zadd(db_proxy, time_delay, proxy)   file "/usr/local/lib/python3.3/site-packages/redis/client.py", line 1345, in zadd     return self.execute_command('zadd', name, *pieces)   file "/usr/local/lib/python3.3/site-packages/redis/client.py", line 464, in execute_command     connection.send_command(*args)   file "/usr/local/lib/python3.3/site-packages/redis/connection.py", line 334, in send_command     self.send_packed_command(self.pack_command(*args))   file "/usr/local/lib/python3.3/site-packages/redis/connection.py", line 316, in send_packed_command     self.connect()   file "/usr/local/lib/python3.3/site-packages/redis/connection.py", line 253, in connect     raise connectionerror(self._error_message(e)) redis.exceptions.connectionerror: error 8 connecting localhost:6379. nodename nor servname provided, or not known.

is there way solve problem?
tried connect redis server when exception happens , use ulimit -n set larger number, 2 methods don't work.

i know why happened. it's caused max number of connections redis-server , it's related max number of file handlers os sets.
if set:

$ ulimit -n 1024

it works.


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