diff options
Diffstat (limited to 'src/include/commands/vacuum.h')
| -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 b3351ad406..c27d255d8d 100644 --- a/src/include/commands/vacuum.h +++ b/src/include/commands/vacuum.h @@ -222,6 +222,13 @@ typedef struct VacuumParams * default value depends on reloptions */ VacOptTernaryValue truncate; /* Truncate empty pages at the end, * default value depends on reloptions */ + + /* + * The number of parallel vacuum workers. 0 by default which means choose + * based on the number of indexes. -1 indicates a parallel vacuum is + * disabled. + */ + int nworkers; } VacuumParams; /* GUC parameters */ @@ -231,6 +238,11 @@ extern int vacuum_freeze_table_age; extern int vacuum_multixact_freeze_min_age; extern int vacuum_multixact_freeze_table_age; +/* Variables for cost-based parallel vacuum */ +extern pg_atomic_uint32 *VacuumSharedCostBalance; +extern pg_atomic_uint32 *VacuumActiveNWorkers; +extern int VacuumCostBalanceLocal; + /* in commands/vacuum.c */ extern void ExecVacuum(ParseState *pstate, VacuumStmt *vacstmt, bool isTopLevel); |