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Date: Wed, 07 Jul 2010 16:21:02 +0200
From: =?ISO-8859-1?Q?Andr=E9_Warnier?= <aw@ice-sa.com>
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To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: Very slow HttpServletRequest.getLocalName()
References: <29096652.post@talk.nabble.com>
In-Reply-To: <29096652.post@talk.nabble.com>
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mmg wrote:
> Hello,
> 
> I've recently deployed an application on our Linux staging server; a Tomcat
> 5.5.28 server on Java 1.5.0_09-b01. At some point, the application makes a
> call to request.getLocalName(). For some reason, this call takes a very long
> time (about 20 seconds!). I profiled the application, and I see that tomcat
> calls InetAddress.getHostName() in turn. This performs a reverse DNS lookup.
> It's this reverse DNS lookup that takes so long (since our host doesn't have
> a DNS address the resolve fails).
> 
> Is there a way to disable this reverse DNS lookup in Tomcat or is there
> anything else I can do to speed this up?
> 
Have you tried putting a specific entry in your local /etc/hosts file, which will match 
what the lookup is looking for ?
(what is the IP address by the way ?)


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