| From: | Thomas <freebsdjlu(at)gmail(dot)com> |
|---|---|
| To: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: postgres: writer process,what does this process actually do? |
| Date: | 2009-12-23 02:56:07 |
| Message-ID: | ff656d8a-0a68-4e6a-9344-3af279b215b3@g1g2000pra.googlegroups.com |
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| Lists: | pgsql-general |
On 12月22日, 下午11时26分, gryz(dot)(dot)(dot)(at)gmail(dot)com (Grzegorz Jaśkiewicz) wrote:
> On Tue, Dec 22, 2009 at 10:19 AM, Thomas <freebsd(dot)(dot)(dot)(at)gmail(dot)com> wrote:
> > Does it write data to data files to make buffer "clean"?if it
> > does ,but I can not find open files from the result of lsof -p
> > PID.
>
> writer actually takes care about writing pages down, from shared
> memory. It is the central point that accesses disk on behalf of all
> backends (which are spawned every time you create new connection).
>
> --
> GJ
>
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hi GJ
Tks a lot .
And could you give me some info about postgres internals? Such as
ebooks or online articles.
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