From: Craig Ringer <craig@postnewspapers.com.au>
To: Dmitri Girski <mitek17@gmail.com>
Cc: Andy Colson <andy@squeakycode.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: pg_connect takes 3.0 seconds
Date: Wed, 06 Jan 2010 12:50:47 +0800
Message-ID: <4B4416A7.1040808@postnewspapers.com.au> (raw)
In-Reply-To: <daed64561001051925k26682e50ue1792e7032a75bd5@mail.gmail.com>
References: <daed64561001041812s602a3098l686f630d6448835f@mail.gmail.com>
<4B4354B0.8030400@squeakycode.net>
<daed64561001051925k26682e50ue1792e7032a75bd5@mail.gmail.com>
Dmitri Girski wrote:
> Hi Andy,
>
> I tried 2 connections strings:
> - server name (DB1), which is listed in all machines hosts files.
> - ip address.
>
> There is no difference in both methods, still I have 5-7 pg_connects which
> last around 3 seconds.
Don't rule out reverse DNS issues (such as a negative cache entry
expiring and being re-checked), packet loss, nss issues on the server
related to NIS, LDAP etc user directories, and so on.
Wireshark is your friend.
--
Craig Ringer
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To: pgsql-performance@postgresql.org
Cc: craig@postnewspapers.com.au, mitek17@gmail.com, andy@squeakycode.net
Subject: Re: pg_connect takes 3.0 seconds
In-Reply-To: <4B4416A7.1040808@postnewspapers.com.au>
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