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help / color / mirror / Atom feedFrom: Ashutosh Bapat <[email protected]>
To: Hannu Krosing <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Nathan Bossart <[email protected]>
Subject: Re: Patch: dumping tables data in multiple chunks in pg_dump
Date: Wed, 12 Nov 2025 18:29:33 +0530
Message-ID: <CAExHW5t54GPKFbW3KLzintJ6jMMRYwb-t2Fjm4JTxEcZbGDomA@mail.gmail.com> (raw)
In-Reply-To: <CAMT0RQT_0qVxcTT6ycM20QUN-pEQ6iMLbz6gLWgLpeF0NmNOUA@mail.gmail.com>
References: <CAMT0RQT_0qVxcTT6ycM20QUN-pEQ6iMLbz6gLWgLpeF0NmNOUA@mail.gmail.com>
Hi Hannu,
On Tue, Nov 11, 2025 at 9:00 PM Hannu Krosing <[email protected]> wrote:
>
> Attached is a patch that adds the ability to dump table data in multiple chunks.
>
> Looking for feedback at this point:
> 1) what have I missed
> 2) should I implement something to avoid single-page chunks
>
> The flag --huge-table-chunk-pages which tells the directory format
> dump to dump tables where the main fork has more pages than this in
> multiple chunks of given number of pages,
>
> The main use case is speeding up parallel dumps in case of one or a
> small number of HUGE tables so parts of these can be dumped in
> parallel.
Have you measured speed up? Can you please share the numbers?
--
Best Wishes,
Ashutosh Bapat
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Subject: Re: Patch: dumping tables data in multiple chunks in pg_dump
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