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help / color / mirror / Atom feedFrom: Bruce Momjian <[email protected]>
To: Andres Freund <[email protected]>
Cc: Melanie Plageman <[email protected]>
Cc: PostgreSQL-development <[email protected]>
Subject: Increase default maintenance_io_concurrency to 16
Date: Tue, 18 Mar 2025 16:22:45 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <fycuaxeisofdyv4265ejiluixuklmoaaoywa7nhz3heytf4na6@3vd6owgwvadc>
References: <[email protected]>
<[email protected]>
<fycuaxeisofdyv4265ejiluixuklmoaaoywa7nhz3heytf4na6@3vd6owgwvadc>
On Tue, Mar 18, 2025 at 04:13:26PM -0400, Andres Freund wrote:
> Hi,
>
> On 2025-03-18 16:08:22 -0400, Bruce Momjian wrote:
> > This commit makes our default random_page_cost = 4 out of line with
> > these new settings (assumes modern SSD/NAS/SAN hardware) and more out of
> > line with reality.
>
> How so? That seems like an independent consideration to me.
[thread moved to hackers]
Uh, I think our old random_page_cost and *_io_concurrency assumed
magnetic disks --- now *_io_concurrency assumes more modern hardware and
random_page_cost assumes magnetic.
--
Bruce Momjian <[email protected]> https://momjian.us
EDB https://enterprisedb.com
Do not let urgent matters crowd out time for investment in the future.
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