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From: Rafael Domiciano <rafael.domiciano@gmail.com>
To: chirag.dave@gmail.com
Cc: pgsql-admin@postgresql.org <pgsql-admin@postgresql.org>
Subject: Re: checkpoint_timeout
Date: Wed, 8 Oct 2008 10:31:08 -0200
Message-ID: <3a0028490810080531y155edffi7ff7c68b965a834a@mail.gmail.com> (raw)
In-Reply-To: <f1d4f3170810071413l3bb62167n2fa32a8ab1ec6dc@mail.gmail.com>
References: <3a0028490810071321j32b4f450m95123d02b9fe6f49@mail.gmail.com>
	<f1d4f3170810071413l3bb62167n2fa32a8ab1ec6dc@mail.gmail.com>

The server is running Postgres 8.2.4When the server is doing too much
operations like I, U or D the postgres stop a while each 5 min...!
I mean "stopping" that I don't receive any response from postgres, and the
process the all people are running stay there, waiting for something.
I read a several names to it like: gap, stall, slowdown... I don't know the
write expression for this situation.

I hope you can help me.

Thnks,

Rafael Domiciano
Postgres DBA

2008/10/7 <chirag.dave@gmail.com>

> What version of postgres are you running ?  and please also provide more
> information about your suspected slowdown ?
>
>
>
>
>
> On Tue, Oct 7, 2008 at 4:21 PM, Rafael Domiciano <
> rafael.domiciano@gmail.com> wrote:
>
>> Hello there,
>> I'm having some slowndowns in my postgresql server, and I had been reading
>> something about checkpoints, that could resolve my problem.
>> Now, I have:
>> checkpoint_segments = 30                # in logfile segments, min 1, 16MB
>> each
>> #checkpoint_timeout = 5min
>>
>> And I percebed that this slowndown is occuring for 5 min...! So I'm
>> suposing that the problem is in the checkpoint_timeout.
>>
>> What's the impact to chang it to:
>> checkpoint_timeout = 2min or
>> checkpoint_timeout = 5min
>>
>> Tnhks,
>>
>> Rafael Domiciano
>>
>
>

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