[Web-SIG] Fwd: Fwd: wsgiref.simple_server slow on slow network

[Tibor Arpas]

I can see the 3 seconds / 150 miliseconds difference in a browser and
to get exact numbers I use Apache ab .

On Mon, Jul 21, 2008 at 6:26 PM, Ionel Maries Cristian
<ionel.mc at gmail.com> wrote:
> how are you benchmarking?
>
> On Mon, Jul 21, 2008 at 18:40, Tibor Arpas <tibor at infinit.sk> wrote:
>>
>> Hi,
>> I'm quite new to python and I ran into a performance problem with
>> wsgiref.simple_server. I'm running this little program.
>>
>> from wsgiref import simple_server
>>
>> def app(environ, start_response):
>>   start_response('200 OK', [('content-type', 'text/html')])
>>   return ['*'*50000]
>>
>> httpd = simple_server.make_server('',8080,app)
>> try:
>>   httpd.serve_forever()
>> except KeyboardInterrupt:
>>   pass
>>
>>
>> I get many hundreds of responses/second on my local computer, which is
>> fine.
>> But when I access this server through our VPN it performs very bad.
>>
>> I get 0.33 requests/second as compared to 7 responses/second when
>> accessing 50kB static file served by IIS.
>>
>> I also tried the same little program using paste.httpserver and that
>> version works fast as expected.
>>
>> I cannot really understand this behavior. My only thought is that the
>> wsgiref version is sending the data in many chunks, and therefore the
>> latency of the VPN comes into play. But I don't really know how to
>> test this.
>>
>> This is Python 2.5.2 on Windows Server 2003 (same behavior on Windows
>> XP), testing with Apache AB as well as Firefox...
>>
>> Any help would be appriciated.
>>
>> Tibor
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>
>
>
> --
> ionel maries cristian
>