From: | Cédric Villemain <cedric(dot)villemain(dot)debian(at)gmail(dot)com> |
---|---|
To: | depesz(at)depesz(dot)com |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Why so many xlogs? |
Date: | 2010-11-01 19:13:49 |
Message-ID: | AANLkTi=VbN-TaL+O0EdpxhoMcV_CR9wz-b4T90BntJ8j@mail.gmail.com |
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Lists: | pgsql-general |
2010/11/1 hubert depesz lubaczewski <depesz(at)depesz(dot)com>:
> On Mon, Nov 01, 2010 at 07:22:50PM +0100, Cédric Villemain wrote:
>> > as I understand, max number of xlog files in pg_xlog should be ( 1 + 2 *
>> > checkpoint_segments ).
>> (2 + checkpoint_completion_target) * checkpoint_segments + 1
>> => 291
>
> this is formula gave to me by rhodiumtoad on irc, but we tested with lower
> checkpoint_completion_target and it didn't change *anything*.
You'll have between 211 and 291 files for 0.1 to 0.9
checkpoint_completion_target.
You'd have more than the number of files given by formula used during
your tests ?
>
> Best regards,
>
> depesz
>
> --
> Linkedin: http://www.linkedin.com/in/depesz / blog: http://www.depesz.com/
> jid/gtalk: depesz(at)depesz(dot)com / aim:depeszhdl / skype:depesz_hdl / gg:6749007
>
--
Cédric Villemain 2ndQuadrant
http://2ndQuadrant.fr/ PostgreSQL : Expertise, Formation et Support
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