Re: Why so many xlogs?
| От | Cédric Villemain |
|---|---|
| Тема | Re: Why so many xlogs? |
| Дата | |
| Msg-id | AANLkTi=VbN-TaL+O0EdpxhoMcV_CR9wz-b4T90BntJ8j@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: Why so many xlogs? (hubert depesz lubaczewski <depesz@depesz.com>) |
| Ответы |
Re: Why so many xlogs?
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| Список | pgsql-general |
2010/11/1 hubert depesz lubaczewski <depesz@depesz.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@depesz.com / aim:depeszhdl / skype:depesz_hdl / gg:6749007 > -- Cédric Villemain 2ndQuadrant http://2ndQuadrant.fr/ PostgreSQL : Expertise, Formation et Support
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