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help / color / mirror / Atom feedFrom: Marcos Pegoraro <[email protected]>
To: Masahiko Sawada <[email protected]>
Cc: Amit Kapila <[email protected]>
Cc: Hayato Kuroda (Fujitsu) <[email protected]>
Cc: Jan Wieck <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: Initial COPY of Logical Replication is too slow
Date: Fri, 27 Mar 2026 10:07:11 -0300
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Em sex., 27 de mar. de 2026 às 03:20, Masahiko Sawada <[email protected]>
escreveu:
> I've attached the updated patch. I believe I've addressed all comments
> I got so far. In addition to that, I've refactored
> is_table_publishable_in_publication() and added more regression tests.
>
Today I had to create a few more schemas and see that problem again, how
the publisher is affected, almost crashing due to the overload.
That was because max_sync_workers_per_subscription was set to 10, which
caused 10 simultaneous connections to call this function immediately after
the refresh publication command.
Wouldn't it be good to document on this GUC that if your publisher server
is running version <= 18 then is it advisable to set this GUC to a really
low value ?
Because ok, version 19 is fine, will be covered, but all publisher servers
that are not updated will continue to have this trouble.
The publisher will be severely penalized when the subscription refreshes
its publication.
What do you think, change something on DOCs too ?
regards
Marcos
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Subject: Re: Initial COPY of Logical Replication is too slow
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