From 2cdf131c46e631addfc386f6106e52a1b8cc3a70 Mon Sep 17 00:00:00 2001 From: Alexander Korotkov Date: Wed, 29 Nov 2023 01:41:48 +0200 Subject: 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 --- src/include/commands/async.h | 1 + 1 file changed, 1 insertion(+) (limited to 'src/include/commands/async.h') diff --git a/src/include/commands/async.h b/src/include/commands/async.h index 02da6ba7e11..a44472b3526 100644 --- a/src/include/commands/async.h +++ b/src/include/commands/async.h @@ -21,6 +21,7 @@ #define NUM_NOTIFY_BUFFERS 8 extern PGDLLIMPORT bool Trace_notify; +extern PGDLLIMPORT int max_notify_queue_pages; extern PGDLLIMPORT volatile sig_atomic_t notifyInterruptPending; extern Size AsyncShmemSize(void); -- cgit v1.2.3