| From: | Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at> |
|---|---|
| To: | Justin Pryzby <pryzby(at)telsasoft(dot)com>, David Rowley <dgrowleyml(at)gmail(dot)com> |
| Cc: | Masahiko Sawada <masahiko(dot)sawada(at)2ndquadrant(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Darafei Komяpa Praliaskouski <me(at)komzpa(dot)net>, Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Michael Banck <mbanck(at)gmx(dot)net> |
| Subject: | Re: Berserk Autovacuum (let's save next Mandrill) |
| Date: | 2020-03-13 12:07:52 |
| Message-ID: | 6eff7a5aef0cdc7beba97dff865fae6908d2b207.camel@cybertec.at |
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| Lists: | pgsql-hackers |
On Fri, 2020-03-13 at 07:00 -0500, Justin Pryzby wrote:
> > 2. The new feature can be completely disabled. This might be very
> > useful for people who suffer from auto-vacuum starvation.
>
> > Yes, but in particular so it can be completely disabled easily.
>
> How is it disabled ? By setting scale_factor=100 ?
>
> + {
> + "autovacuum_vacuum_insert_scale_factor",
> + "Number of tuple inserts prior to vacuum as a fraction of reltuples",
> + RELOPT_KIND_HEAP | RELOPT_KIND_TOAST,
> + ShareUpdateExclusiveLock
> + },
> + -1, 0.0, 100.0
>
> Note, vacuum_cleanup_index_scale_factor uses max: 1e10
> See 4d54543efa5eb074ead4d0fadb2af4161c943044
By setting the threshold very high, or by setting the scale factor to 100.
Yours,
Laurenz Albe
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