| From: | Jayadevan <maymala(dot)jayadevan(at)gmail(dot)com> |
|---|---|
| To: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Theory question |
| Date: | 2013-11-13 03:09:22 |
| Message-ID: | 1384312162304-5778052.post@n5.nabble.com |
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| Thread: | |
| Lists: | pgsql-general |
Kevin Grittner-5 wrote
> The checkpointer process is responsible for creating safe points
> from which a recovery can begin; the background writer tries to
> keep some pages available for re-use so that processes running
> queries don't need to wait for page writes in order to have free
> spots to use in shared buffers.
Thank you. Do both of them write to the same files? Is it that checkpoint
writes only committed data whereas background writer may also write
non-committed data if there is no space available in the buffers?
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