Message-Id: <46F3E9ED.EE98.0025.0@wicourts.gov>
Date: Fri, 21 Sep 2007 15:57:34 -0500
From: "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
To: "Luiz K. Matsumura" <luiz@planit.com.br>, <brauagustin-susc@yahoo.com.ar>
Cc: <pgsql-performance@postgresql.org>
Subject: Re: Low CPU Usage
References: <322942.8256.qm@web30004.mail.mud.yahoo.com>
	<46F42C54.7070901@planit.com.br>
In-Reply-To: <46F42C54.7070901@planit.com.br>
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>>> On Fri, Sep 21, 2007 at  3:40 PM, in message <46F42C54.7070901@planit.c=
om.br>,
"Luiz K. Matsumura" <luiz@planit.com.br> wrote:=20
=20
> but in suddenly the performance slow down. We noticed that the problem=20=

> was with the time to connect with the server, that was very slow.
=20
> I think that was some DNS problem (but not sure), because one time we=20
> cleared nameserver clauses in the /etc/resolv.conf the performance=20
> return to the normal.
=20
You may have it there.  In some versions of Java, on Windows, connection
times are horribly slow unless the machine's IP address has a reverse
DNS entry.  Perhaps the new machine lacks such an entry, or there's a
different version of Java in use?
=20
-Kevin
=20