Re: [PATCH] pg_dump: lock tables in batches

Andres Freund <andres@anarazel.de>

From: Andres Freund <andres@anarazel.de>

To: Fabrízio de Royes Mello <fabriziomello@gmail.com>

Cc: Tom Lane <tgl@sss.pgh.pa.us>, Aleksander Alekseev <aleksander@timescale.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>

Date: 2022-12-07T21:32:42Z

Lists: pgsql-hackers

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During pg_dump startup, acquire table locks in batches.
- 5f53b42cfd05 16.0 landed

Hi,

On 2022-12-07 18:14:01 -0300, Fabrízio de Royes Mello wrote:
> Here we have some numbers about the Aleksander's patch:

Hm. Were they taken in an assertion enabled build or such? Just testing the
t10000 case on HEAD, I get 0:01.23 elapsed for an unpatched pg_dump in an
optimized build. And that's on a machine with not all that fast cores.

Greetings,

Andres Freund