| From: | Guillaume Lelarge <guillaume(at)lelarge(dot)info> |
|---|---|
| To: | Mariel Cherkassky <mariel(dot)cherkassky(at)gmail(dot)com> |
| Cc: | PostgreSQL mailing lists <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: does dml operations load the blocks to the shared buffers ? |
| Date: | 2019-01-10 08:55:04 |
| Message-ID: | CAECtzeXdq8YHo7v8oTmUYCz29T8G1kc=1L6hO9i0Y-mbPMjaYw@mail.gmail.com |
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| Lists: | pgsql-performance |
Le jeu. 10 janv. 2019 à 09:07, Mariel Cherkassky <
mariel(dot)cherkassky(at)gmail(dot)com> a écrit :
> Hey,
> It is clear that when we query some data, if that data isnt in the shared
> buffers pg will go bring the relevant blocks from the disk to the shared
> buffers. I wanted to ask if the same logic works with
> dml(insert/update/delete). I'm familiar with the writing logic, that the
> checkpointer is the process that writing the data changes into the data
> files during every checkpoint and that the commit write the changes from
> the wal buffers to to the wal files. I wanted to ask about a situation
> where we run dmls and that data isnt available in the shared buffers.
>
>
It works the same.
--
Guillaume.
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