| From: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
|---|---|
| To: | David Rowley <dgrowleyml(at)gmail(dot)com> |
| Cc: | Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, 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 12:00:56 |
| Message-ID: | 20200313120056.GK29065@telsasoft.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On Wed, Mar 11, 2020 at 10:32:47AM +1300, David Rowley wrote:
> 2. The new feature can be completely disabled. This might be very
> useful for people who suffer from auto-vacuum starvation.
On Thu, Mar 12, 2020 at 08:28:05PM +1300, David Rowley wrote:
> 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
--
Justin
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