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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Justin Pryzby <pryzby@telsasoft.com>
Cc: Peter Geoghegan <pg@bowt.ie>
Cc: 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)
Date: Wed, 28 Dec 2022 21:17:54 -0500
Message-ID: <451605.1672280274@sss.pgh.pa.us> (raw)
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>

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





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  Subject: Re: BUG #17717: Regression in vacuumdb (15 is slower than 10/11 and possible memory issue)
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