From: Tom Lane <tgl@sss.pgh.pa.us>
To: Justin Pryzby <pryzby@telsasoft.com>
cc: Peter Geoghegan <pg@bowt.ie>, postgresql@taljaren.se,
        pgsql-hackers@lists.postgresql.org,
        Michael Paquier <michael@paquier.xyz>
Subject: Re: BUG #17717: Regression in vacuumdb (15 is slower than 10/11 and
 possible memory issue)
In-reply-to: <20221229012354.GF1153@telsasoft.com>
References: <17717-6c50eb1c7d23a886@postgresql.org>
 <3439037.1671130590@sss.pgh.pa.us>
 <CAH2-Wzne4Wgaaruq-VSY2qWNhxcPRqWUbdwVQPkM81TpaHY_kQ@mail.gmail.com>
 <3544447.1671141436@sss.pgh.pa.us>
 <CAH2-WzkXmYt-K+pQqMqjFgwU7jiykD3amngd5-jkqQF=gST7Og@mail.gmail.com>
 <3672943.1671202149@sss.pgh.pa.us>
 <CAH2-WzkHRxcE-0Mub9N0Rr09SGEEF1Ex4pUbcOBSRoNGNVy93w@mail.gmail.com>
 <407579.1672258403@sss.pgh.pa.us> <20221229012354.GF1153@telsasoft.com>
Comments: In-reply-to Justin Pryzby <pryzby@telsasoft.com>
	message dated "Wed, 28 Dec 2022 19:23:54 -0600"
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <451604.1672280274.1@sss.pgh.pa.us>
Date: Wed, 28 Dec 2022 21:17:54 -0500
Message-ID: <451605.1672280274@sss.pgh.pa.us>
Archived-At: 
 <https://www.postgresql.org/message-id/451605.1672280274%40sss.pgh.pa.us>
Precedence: bulk

Justin Pryzby <pryzby@telsasoft.com> writes:
> On Wed, Dec 28, 2022 at 03:13:23PM -0500, Tom Lane wrote:
>> I'm forced to the conclusion that we have to expose some VACUUM
>> options if we want this to work well.  Attached is a draft patch
>> that invents SKIP_DATABASE_STATS and ONLY_DATABASE_STATS options
>> (name bikeshedding welcome) and teaches vacuumdb to use them.

> I assumed it would look like:
> VACUUM (UPDATE_DATABASE_STATS {yes,no,only})

Meh.  We could do it like that, but I think options that look like
booleans but aren't are messy.

			regards, tom lane