Re: Autovacuum after bulk data insert(millions!)

Hi Igor,

My next step for this post is performing suggestions and testing. I also
agree with you this is a radical decision but I'm happy for all your
advice, at least I know how can proceed now.

Thank you for all,

Regards,
Gunce

On Tue, Oct 17, 2017 at 10:21 PM, Igor Neyman <ineyman(at)perceptron(dot)com>
wrote:

>
>
> *From:* pgsql-admin-owner(at)postgresql(dot)org [mailto:pgsql-admin-owner@
> postgresql.org] *On Behalf Of *Günce Kaya
> *Sent:* Tuesday, October 17, 2017 2:57 PM
> *To:* Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
> *Cc:* pgsql-admin(at)postgresql(dot)org
> *Subject:* Re: [ADMIN] Autovacuum after bulk data insert(millions!)
>
>
>
> Hi Scott,
>
>
>
> Thank you for your response. I sent this post because I want to make sure
> as to whether we need continuous autovacuum exactly for that database. I
> read your answer and consider on it well. I'm gonna keep your suggest "disabling
> autovacuum on those tables and then vacuuming after the bulk upload" on
> my mind this fastest way for specific tables.
>
>
>
> The problem is not only about autovacuum is taking long time, I've read
> some documents about autovacuum, the point is that disable autovacuum and
> vacuuming monthly even after millions of bulk data load to a database is
> reasonable or not? I'm not insist on vacuuming monthly just I'm confusing
> about that.
>
>
>
> Regards,
>
> Gunce
>
>
>
> Gunce,
>
>
>
> Autovacuum improved a lot in latest PG releases. Don’t rely on what you
> read in oldpostings, try/test it yourself.
>
> Disabling autovacuum is rather radical step. You should do it only if you
> observe specific problems caused by autovacuum, and even in these cases
> more often than not tuning autovacuum parameters is a better than disabling
> it.
>
> Switching from autovacuum to manual vacuuming may cause more problems than
> solve. You should have very strong reasons to do that.
>
>
>
> So, first see if there is a problem with autovacuum, then try to tune it,
> and only if this doesn’t help, try manual vacuuming.
>
>
>
> Regards,
>
> Igor Neyman
>

--
Gunce Kaya

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