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From: Laurenz Albe <[email protected]>
To: SASIKUMAR Devaraj <[email protected]>
To: vignesh kumar <[email protected]>
To: Pgsql-admin <[email protected]>
Subject: Re: VacuumDB generating huge WAL filed
Date: Fri, 13 Dec 2024 11:12:28 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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	<MN0PR20MB49129306EE76C40E778EE7A5873F2@MN0PR20MB4912.namprd20.prod.outlook.com>
	<[email protected]>

On Fri, 2024-12-13 at 10:03 +0000, SASIKUMAR Devaraj wrote:
> > When we are running vacuumdb for our database of 1.5TB it is
> > generating approximately 60GB of WAL files? Any way we can
> > reduce this WAL file generation?
>
> We were able to identify the table generating around 40GB in
> few mins by vaccum process. It is partition table with dead
> tuple less than 0.5 percent. What may be next steps?

I think I told you: increase "max_wal_size" and enable "wal_compression".
That should reduce the amount of WAL.

Yours,
Laurenz Albe

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