In article <b9f77b6f-3a65-407a-aff5-5677be2ba...@googlegroups.com>, anntzer....@gmail.com wrote:
> Hi, > > At startup, IPython (qtconsole) calls > "socket.gethostbyname_ex(socket.gethostname())[2]" to find a list of IP > addresses that point to the machine. On a Linux server that I manage this > call is extremely slow (>20s)... which I have trouble understanding as "ip > addr show" seems to give the same information nearly instantaneously. Is > there anything I can do to make this faster? Can this be a network > configuration issue (I am behind a router)? It's almost certainly some sort of configuration issue which is causing some DNS query to timeout. The first step, is to figure out which part is taking so long. Open up a python shell and run: >>> name = socket.gethostname() see how long that takes and what it returns. Then, assuming it returns a string containing your hostname (massive handwave about what that actually means), try >>> socket.gethostbyname_ex(name) and see how long that takes and what it returns. At least at that point you'll have cut the problem in half. If I had to guess, you've got a missing PTR record, because that's what most people screw up. -- http://mail.python.org/mailman/listinfo/python-list
