xmlrpc slow in windows 7 if hostnames are used

News123 news123 at free.fr
Fri Feb 5 10:10:39 CET 2010


Yhanks  a lot I'll check whether this is the root cause.

Currently my machine could live without IPV6


bye

N


Gabriel Genellina wrote:
> En Thu, 04 Feb 2010 19:34:20 -0300, News123 <news123 at free.fr> escribió:
> 
>> I wrote a small xmlrpc client on Windows 7 with python 2.6
>>
>> srv = xmlrpclib.Server('http://localhost:80')
>>
>> I was able to perform about 1 rpc call per second
>>
>>
>> After changing to
>> srv = xmlrpclib.Server('http://127.0.0.1:80')
>>
>> I was able to perform about 10 to 16 rpc calls per second.
>>
>> So it seems, that under windows 7 the host name lookup occurs for every
>> RPC call
> 
> Not necesarily. There is another difference: 127.0.0.1 is an IPv4
> address, localhost maps to both IPv4 and IPv6 addresses (::1)
> 
> I vaguely remember a problem with that - IPv6 is tried first, doesn't
> work, only then IPv4, and that slows down the whole process.
> Try disabling completely the IPv6 stack, if you don't need it.
> 



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