diff options
Diffstat (limited to 'src/backend/utils/misc')
| -rw-r--r-- | src/backend/utils/misc/guc_tables.c | 23 | ||||
| -rw-r--r-- | src/backend/utils/misc/postgresql.conf.sample | 6 |
2 files changed, 29 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 diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample index 8de86e0c945..43c2ec2153e 100644 --- a/src/backend/utils/misc/postgresql.conf.sample +++ b/src/backend/utils/misc/postgresql.conf.sample @@ -202,6 +202,12 @@ #maintenance_io_concurrency = 10 # 1-1000; 0 disables prefetching #io_combine_limit = 128kB # usually 1-32 blocks (depends on OS) +#io_method = sync # sync (change requires restart) +#io_max_concurrency = -1 # Max number of IOs that one process + # can execute simultaneously + # -1 sets based on shared_buffers + # (change requires restart) + # - Worker Processes - #max_worker_processes = 8 # (change requires restart) |