Horton

Use larger segment file names for pg_notify

Alexander Korotkov <akorotkov@postgresql.org>

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Commit: 2cdf131c46e631addfc386f6106e52a1b8cc3a70
Author: Alexander Korotkov <akorotkov@postgresql.org>
Date: 2023-11-28T23:41:48Z
Releases: 17.0 
Use larger segment file names for pg_notify

This avoids the wraparound in async.c and removes the corresponding code
complexity. The maximum amount of allocated SLRU pages for NOTIFY / LISTEN
queue is now determined by the max_notify_queue_pages GUC. The default
value is 1048576. It allows to consume up to 8 GB of disk space which is
exactly the limit we had previously.

Author: Maxim Orlov, Aleksander Alekseev, Alexander Korotkov, Teodor Sigaev
Author: Nikita Glukhov, Pavel Borisov, Yura Sokolov
Reviewed-by: Jacob Champion, Heikki Linnakangas, Alexander Korotkov
Reviewed-by: Japin Li, Pavel Borisov, Tom Lane, Peter Eisentraut, Andres Freund
Reviewed-by: Andrey Borodin, Dilip Kumar, Aleksander Alekseev
Discussion: https://postgr.es/m/CACG%3DezZe1NQSCnfHOr78AtAZxJZeCvxrts0ygrxYwe%3DpyyjVWA%40mail.gmail.com
Discussion: https://postgr.es/m/CAJ7c6TPDOYBYrnCAeyndkBktO0WG2xSdYduTF0nxq%2BvfkmTF5Q%40mail.gmail.com

Files

PathChange+/−
doc/src/sgml/config.sgml modified +16 −0
doc/src/sgml/ref/listen.sgml modified +1 −0
doc/src/sgml/ref/notify.sgml modified +1 −0
src/backend/commands/async.c modified +30 −92
src/backend/utils/misc/guc_tables.c modified +10 −0
src/backend/utils/misc/postgresql.conf.sample modified +3 −0
src/include/commands/async.h modified +1 −0

Documentation touched

Discussion