| From: | David Rowley <dgrowleyml(at)gmail(dot)com> |
|---|---|
| To: | Peter Geoghegan <pg(at)bowt(dot)ie> |
| Cc: | Nathan Bossart <nathandbossart(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Jeremy Schneider <schneider(at)ardentperf(dot)com>, Sami Imseih <samimseih(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: another autovacuum scheduling thread |
| Date: | 2025-10-24 22:25:02 |
| Message-ID: | CAApHDvq5x+Su54QFhQDTkz+oUG2XbPGugOgp2YbhrTXTbbrGJQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sat, 25 Oct 2025 at 10:14, Peter Geoghegan <pg(at)bowt(dot)ie> wrote:
>
> On Wed, Oct 22, 2025 at 3:35 PM David Rowley <dgrowleyml(at)gmail(dot)com> wrote:
> > If we had the varying sleep time as I mentioned above, the
> > failsafe code could even be removed as the
> > "autovacuum_vacuum_cost_delay / <tables score>" calculation would
> > effectively zero the sleep time with any table > failsafe age.
>
> I'm not sure what you mean by "the failsafe could be removed".
> Importantly, the failsafe will abandon all further index vacuuming.
> That's why it's presented as something that you as a user are not
> supposed to rely on.
I didn't realise it did that too. I thought it just dropped the delay
to zero. In that case, I revoke the statement.
David
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