diff options
Diffstat (limited to 'src/include/commands')
| -rw-r--r-- | src/include/commands/vacuum.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/include/commands/vacuum.h b/src/include/commands/vacuum.h index 689dbb77024..2a4dae7dd87 100644 --- a/src/include/commands/vacuum.h +++ b/src/include/commands/vacuum.h @@ -222,6 +222,9 @@ typedef struct VacuumParams * use default */ int multixact_freeze_table_age; /* multixact age at which to scan * whole table */ + int freeze_strategy_threshold; /* threshold to use eager + * freezing, in megabytes, -1 to + * use default */ bool is_wraparound; /* force a for-wraparound vacuum */ int log_min_duration; /* minimum execution threshold in ms at * which autovacuum is logged, -1 to use @@ -274,6 +277,14 @@ struct VacuumCutoffs */ TransactionId FreezeLimit; MultiXactId MultiXactCutoff; + + /* + * Eager freezing strategy is used whenever target rel's main fork size + * exceeds freeze_strategy_threshold_pages. Otherwise lazy freezing + * strategy is used. (Actually, there are exceptions. Non-permanent + * tables always use eager freezing strategy.) + */ + BlockNumber freeze_strategy_threshold_pages; }; /* @@ -297,6 +308,7 @@ extern PGDLLIMPORT int vacuum_freeze_min_age; extern PGDLLIMPORT int vacuum_freeze_table_age; extern PGDLLIMPORT int vacuum_multixact_freeze_min_age; extern PGDLLIMPORT int vacuum_multixact_freeze_table_age; +extern PGDLLIMPORT int vacuum_freeze_strategy_threshold; extern PGDLLIMPORT int vacuum_failsafe_age; extern PGDLLIMPORT int vacuum_multixact_failsafe_age; |