| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at> |
| Cc: | Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Masahiko Sawada <masahiko(dot)sawada(at)2ndquadrant(dot)com>, David Rowley <dgrowleyml(at)gmail(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>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Michael Banck <mbanck(at)gmx(dot)net> |
| Subject: | Re: Berserk Autovacuum (let's save next Mandrill) |
| Date: | 2020-03-26 18:50:56 |
| Message-ID: | 20200326185056.qncp7yefomq4qmzq@alap3.anarazel.de |
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| Lists: | pgsql-hackers |
Hi,
On 2020-03-26 10:12:39 +0100, Laurenz Albe wrote:
> On Wed, 2020-03-25 at 23:19 +0300, Alexander Korotkov wrote:
> I am reluctant to introduce new semantics like a reloption value of -2
> to disable a feature in this patch right before feature freeze.
>
> I believe there are enough options to disable insert-only vacuuming for
> an individual table:
> - Set the threshold to 2147483647. True, that will not work for very
> large tables, but I think that there are few tables that insert that
> many rows before they hit autovacuum_freeze_max_age anyway.
>
> - Set the scale factor to some astronomical value.
Meh. You *are* adding new semantics with these. And they're terrible.
Greetings,
Andres Freund
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