[Catalyst] Slowness on test server caused by reverse DNS lookups

[Marcello Romani]

Wade.Stuart at fallon.com ha scritto:
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> catalyst-bounces at lists.rawmode.org wrote on 05/30/2006 08:51:53 AM:
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>> On 5/30/06, Marcello Romani <mromani at ottotecnica.com> wrote:
>>> I had a problem that is possibly related to this: when trying to access
>>> the local test server, the browser requests seemed to reach it only
>>> after a rather lengthy delay (5 seconds or so), but if I disabled the
>>> LAN interface everything was instantaneous.
> 
> Also the default timeout for a DNS reverse lookup on all platforms I am
> aware of is at least 25 seconds.  If you are seeing 5 second delays this is
> probably some other issue not DNS.

Now that you mention it, the delay was more like 30 secs than 5.

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> If you are seeing 25 -> 60+ second delays you may add an entry for your IP
> address to c:\windows\system32\drivers\etc\hosts or /etc/hosts for your IP
> ( take a look at /etc/nsswitch.conf or its variants too to make sure files
> is listed first) -- that should take care reverse/forward dns timeouts for
> testing.

Thanks for the info. Unfortunately, as I said in another post I don't 
have that machine and that code anymore. ASAP I'll do some tests with a 
fresh noop catapp.

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>> Under Windows, something like this (i.e. an annoying delay) happens
>> when you're running the builtin server with "-k" and using IE as the
>> browser. Unfortunately, if you don't use the "-k" option, IE doesn't
>> play nice with it and everything blows up. But this shouldn't have
>> anything to do with LAN interfaces, at least in theory.
>>
>> If you're ever able to test under these same conditions, it would be
>> nice to know if the problem was also present when using FireFox as the
>> browser.
>>
>>
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> 
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-- 
Marcello Romani
Responsabile IT
Ottotecnica s.r.l.
http://www.ottotecnica.com