From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Qingqing Zhou <zhouqq(at)cs(dot)toronto(dot)edu> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Autovacuum in the backend |
Date: | 2005-06-15 14:04:22 |
Message-ID: | 200506151404.j5FE4Mb09030@candle.pha.pa.us |
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Lists: | pgsql-general pgsql-hackers |
I am going to start working on it. I am concerned it is a big job.
I will post questions as I find them, and the one below is a good one.
---------------------------------------------------------------------------
Qingqing Zhou wrote:
>
> "Qingqing Zhou" <zhouqq(at)cs(dot)toronto(dot)edu> writes
> >
> > The start/stop routine is quite like Bgwriter.
> >
>
> I just realized that the non-standard backend can't execute any SQL command.
> If so, how would the background pg_autovacuum do "vacuum"? It could be
> forked more like a standard backend, but this is obviously not a good idea,
> since we don't know which database this process will sit on.
>
> A possible solution is that backgroud pg_autovacuum could fork another
> process to connect to postmaster as an ordinary backend each time it feels
> that a "vacuum" is needed.
>
> Any ideas?
>
> Regards,
> Qingqing
>
>
>
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--
Bruce Momjian | http://candle.pha.pa.us
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