From 2a5e709e721cf5f890cde51755b84cfe25d1c4d9 Mon Sep 17 00:00:00 2001 From: Andres Freund Date: Sun, 30 Mar 2025 19:14:55 -0400 Subject: Enable IO concurrency on all systems Previously effective_io_concurrency and maintenance_io_concurrency could not be set above 0 on machines without fadvise support. AIO enables IO concurrency without such support, via io_method=worker. Currently only subsystems using the read stream API will take advantage of this. Other users of maintenance_io_concurrency (like recovery prefetching) which leverage OS advice directly will not benefit from this change. In those cases, maintenance_io_concurrency will have no effect on I/O behavior. Author: Melanie Plageman Reviewed-by: Noah Misch Discussion: https://postgr.es/m/CAAKRu_atGgZePo=_g6T3cNtfMf0QxpvoUh5OUqa_cnPdhLd=gw@mail.gmail.com --- src/backend/utils/misc/guc_tables.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/backend/utils/misc/guc_tables.c') diff --git a/src/backend/utils/misc/guc_tables.c b/src/backend/utils/misc/guc_tables.c index 76c7c6bb4b1..4eaeca89f2c 100644 --- a/src/backend/utils/misc/guc_tables.c +++ b/src/backend/utils/misc/guc_tables.c @@ -3235,7 +3235,7 @@ struct config_int ConfigureNamesInt[] = &effective_io_concurrency, DEFAULT_EFFECTIVE_IO_CONCURRENCY, 0, MAX_IO_CONCURRENCY, - check_effective_io_concurrency, NULL, NULL + NULL, NULL, NULL }, { @@ -3249,7 +3249,7 @@ struct config_int ConfigureNamesInt[] = &maintenance_io_concurrency, DEFAULT_MAINTENANCE_IO_CONCURRENCY, 0, MAX_IO_CONCURRENCY, - check_maintenance_io_concurrency, assign_maintenance_io_concurrency, + NULL, assign_maintenance_io_concurrency, NULL }, -- cgit v1.2.3