Re: Too frequent checkpoints ?
От | Pavan Deolasee |
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Тема | Re: Too frequent checkpoints ? |
Дата | |
Msg-id | CABOikdNkgdOyiHVpxubppsM4WvxgDnKTr509AW6GrE3NebTqhA@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: Too frequent checkpoints ? (Fujii Masao <masao.fujii@gmail.com>) |
Ответы |
Re: Too frequent checkpoints ?
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Список | pgsql-hackers |
On Fri, Feb 8, 2013 at 10:25 PM, Fujii Masao <masao.fujii@gmail.com> wrote: .> > BTW, the cause of the problem is that the following sequences happens. > > 1. archive_timeout switches WAL file because checkpoint WAL record has > has been written since last switch Thank you for explaining that. I also noticed that the WAL file switch happens after archive_timeout seconds irrespective of whether archive_mode is turned ON or not. This happens because we don't check if XLogArchivingActive() in CheckArchiveTimeout() function. It looks wrong to me. But if it's that way for a good reason, shouldn't we at least document this behaviour ? Thanks, Pavan -- Pavan Deolasee http://www.linkedin.com/in/pavandeolasee
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