diff options
Diffstat (limited to 'src/backend/postmaster/autovacuum.c')
| -rw-r--r-- | src/backend/postmaster/autovacuum.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c index 9dc6bf9477f..1e90b72b740 100644 --- a/src/backend/postmaster/autovacuum.c +++ b/src/backend/postmaster/autovacuum.c @@ -99,6 +99,7 @@ #include "tcop/tcopprot.h" #include "utils/fmgroids.h" #include "utils/fmgrprotos.h" +#include "utils/guc_hooks.h" #include "utils/lsyscache.h" #include "utils/memutils.h" #include "utils/ps_status.h" @@ -3374,3 +3375,29 @@ AutoVacuumShmemInit(void) else Assert(found); } + +/* + * GUC check_hook for autovacuum_work_mem + */ +bool +check_autovacuum_work_mem(int *newval, void **extra, GucSource source) +{ + /* + * -1 indicates fallback. + * + * If we haven't yet changed the boot_val default of -1, just let it be. + * Autovacuum will look to maintenance_work_mem instead. + */ + if (*newval == -1) + return true; + + /* + * We clamp manually-set values to at least 1MB. Since + * maintenance_work_mem is always set to at least this value, do the same + * here. + */ + if (*newval < 1024) + *newval = 1024; + + return true; +} |