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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2023-04-07 13:29:29 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2023-04-07 13:29:29 -0400 |
| commit | ff245a37888ae28da4e6eeacac83f00aa0986340 (patch) | |
| tree | 256cf7833b2c74d758630575ad2d5ca6838a4202 /src/backend/utils/misc/guc_tables.c | |
| parent | 888f2ea0a81ff171087bdd1c5c1eeda3b78d73d4 (diff) | |
| download | postgresql-ff245a37888ae28da4e6eeacac83f00aa0986340.tar.gz postgresql-ff245a37888ae28da4e6eeacac83f00aa0986340.zip | |
Doc: improve descriptions of max_[pred_]locks_per_transaction GUCs.
The old wording described these as being multiplied by max_connections
plus max_prepared_transactions, which hasn't been exactly right for
some time thanks to the addition of various auxiliary processes.
Moreover, exactness here is a bit pointless given that the lock tables
can expand into the initially-unallocated "slop" space in shared
memory. Rather than trying to track exactly what the code is doing,
let's just use the term "server processes".
Likewise adjust these GUCs' description strings in guc_tables.c.
Wang Wei, reviewed by Nathan Bossart and myself
Discussion: https://postgr.es/m/OS3PR01MB6275BDD09C9B875C65FCC5AB9EA39@OS3PR01MB6275.jpnprd01.prod.outlook.com
Diffstat (limited to 'src/backend/utils/misc/guc_tables.c')
| -rw-r--r-- | src/backend/utils/misc/guc_tables.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/backend/utils/misc/guc_tables.c b/src/backend/utils/misc/guc_tables.c index e8e8245e91f..cf7f465ddb1 100644 --- a/src/backend/utils/misc/guc_tables.c +++ b/src/backend/utils/misc/guc_tables.c @@ -2599,9 +2599,9 @@ struct config_int ConfigureNamesInt[] = { {"max_locks_per_transaction", PGC_POSTMASTER, LOCK_MANAGEMENT, gettext_noop("Sets the maximum number of locks per transaction."), - gettext_noop("The shared lock table is sized on the assumption that " - "at most max_locks_per_transaction * max_connections distinct " - "objects will need to be locked at any one time.") + gettext_noop("The shared lock table is sized on the assumption that at most " + "max_locks_per_transaction objects per server process or prepared " + "transaction will need to be locked at any one time.") }, &max_locks_per_xact, 64, 10, INT_MAX, @@ -2612,8 +2612,8 @@ struct config_int ConfigureNamesInt[] = {"max_pred_locks_per_transaction", PGC_POSTMASTER, LOCK_MANAGEMENT, gettext_noop("Sets the maximum number of predicate locks per transaction."), gettext_noop("The shared predicate lock table is sized on the assumption that " - "at most max_pred_locks_per_transaction * max_connections distinct " - "objects will need to be locked at any one time.") + "at most max_pred_locks_per_transaction objects per server process " + "or prepared transaction will need to be locked at any one time.") }, &max_predicate_locks_per_xact, 64, 10, INT_MAX, |