Re: pg_connect takes 3.0 seconds

From: Dmitri Girski <mitek17(at)gmail(dot)com>
To: Andy Colson <andy(at)squeakycode(dot)net>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: pg_connect takes 3.0 seconds
Date: 2010-01-06 03:29:28
Message-ID: daed64561001051929k1ea5012bib2aa9159787d7f75@mail.gmail.com
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Thank you for reply , Andy!

I tried both cases: server name which is listed in hosts file and ip address
( 192.168.2.2) - no difference so far.

Cheers,
Dmitri.

On Wed, Jan 6, 2010 at 2:03 AM, Andy Colson <andy(at)squeakycode(dot)net> wrote:

> On 1/4/2010 8:12 PM, Dmitri Girski wrote:
>
>> Hi everybody,
>>
>> I am running a PostgreSQL server 8.3.5 with a pretty much standard config.
>>
>> The web application server which runs Apache 1.3/PHP2.9 has an
>> intermittent problem:
>> pg_connect takes exactly 3.0 seconds. The usual connection time is 0.0045.
>> The long request happens at approximate rate 1:100.
>>
>> I turned on logs on postgres server side, and there is
>> nothing suspicious for me there. When a connection request comes, it is
>> being served without any delay.
>>
>> Could anyone point me to the direction in which I should investigate
>> this problem further?
>> Thank you in advance!
>>
>>
>> PS The hardware is: Dell SC1435/4Gb/2x2.0GHz/Gentoo Linux.
>> The database & web servers are in the 2 local subnets.
>>
>>
>> Dmitri.
>>
>>
> How do you have the connect string? With an IP or a name? Maybe its a DNS
> lookup timeout? You could switch to IP or drop the name in the hosts file
> and see if that makes a difference.
>
> -Andy
>

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