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| author | Andres Freund <andres@anarazel.de> | 2025-03-17 18:51:33 -0400 |
|---|---|---|
| committer | Andres Freund <andres@anarazel.de> | 2025-03-17 18:51:33 -0400 |
| commit | 02844012b304ba80d1c48d51f6fe10bb622490cc (patch) | |
| tree | c7753eb6c900a00ebdaa2311b87aefbb21d9f588 /src/backend/utils/misc/guc_tables.c | |
| parent | 65db3963ae7154b8f01e4d73dc6b1ffd81c70e1e (diff) | |
| download | postgresql-02844012b304ba80d1c48d51f6fe10bb622490cc.tar.gz postgresql-02844012b304ba80d1c48d51f6fe10bb622490cc.zip | |
aio: Basic subsystem initialization
This commit just does the minimal wiring up of the AIO subsystem, added in the
next commit, to the rest of the system. The next commit contains more details
about motivation and architecture.
This commit is kept separate to make it easier to review, separating the
changes across the tree, from the implementation of the new subsystem.
We discussed squashing this commit with the main commit before merging AIO,
but there has been a mild preference for keeping it separate.
Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi>
Reviewed-by: Noah Misch <noah@leadboat.com>
Discussion: https://postgr.es/m/uvrtrknj4kdytuboidbhwclo4gxhswwcpgadptsjvjqcluzmah%40brqs62irg4dt
Diffstat (limited to 'src/backend/utils/misc/guc_tables.c')
| -rw-r--r-- | src/backend/utils/misc/guc_tables.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/backend/utils/misc/guc_tables.c b/src/backend/utils/misc/guc_tables.c index 9c0b10ad4dc..0d3ebf06a95 100644 --- a/src/backend/utils/misc/guc_tables.c +++ b/src/backend/utils/misc/guc_tables.c @@ -72,6 +72,7 @@ #include "replication/slot.h" #include "replication/slotsync.h" #include "replication/syncrep.h" +#include "storage/aio.h" #include "storage/bufmgr.h" #include "storage/bufpage.h" #include "storage/large_object.h" @@ -3255,6 +3256,18 @@ struct config_int ConfigureNamesInt[] = }, { + {"io_max_concurrency", + PGC_POSTMASTER, + RESOURCES_IO, + gettext_noop("Max number of IOs that one process can execute simultaneously."), + NULL, + }, + &io_max_concurrency, + -1, -1, 1024, + check_io_max_concurrency, NULL, NULL + }, + + { {"backend_flush_after", PGC_USERSET, RESOURCES_IO, gettext_noop("Number of pages after which previously performed writes are flushed to disk."), gettext_noop("0 disables forced writeback."), @@ -5311,6 +5324,16 @@ struct config_enum ConfigureNamesEnum[] = NULL, NULL, NULL }, + { + {"io_method", PGC_POSTMASTER, RESOURCES_IO, + gettext_noop("Selects the method for executing asynchronous I/O."), + NULL + }, + &io_method, + DEFAULT_IO_METHOD, io_method_options, + NULL, assign_io_method, NULL + }, + /* End-of-list marker */ { {NULL, 0, 0, NULL, NULL}, NULL, 0, NULL, NULL, NULL, NULL |