database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-30 11:03:19 +03:00
Code Activity

Add vacuum_freeze_table_age GUC option, to control when VACUUM should

Browse Source 
ignore the visibility map and scan the whole table, to advance
relfrozenxid.
This commit is contained in:
Heikki Linnakangas
2009-01-16 13:27:24 +00:00
parent 19afb4e805
commit 6587818542
16 changed files with 170 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/backend/commands/vacuumlazy.c
View File

@ -29,7 +29,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/vacuumlazy.c,v 1.116 2009/01/06 14:55:37 heikki Exp $
* $PostgreSQL: pgsql/src/backend/commands/vacuumlazy.c,v 1.117 2009/01/16 13:27:23 heikki Exp $
*
*-------------------------------------------------------------------------
*/
@ -144,6 +144,8 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt,
BlockNumber possibly_freeable;
PGRUsage ru0;
TimestampTz starttime = 0;
bool scan_all;
TransactionId freezeTableLimit;
pg_rusage_init(&ru0);
@ -158,8 +160,11 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt,
vac_strategy = bstrategy;
vacuum_set_xid_limits(vacstmt->freeze_min_age, onerel->rd_rel->relisshared,
&OldestXmin, &FreezeLimit);
vacuum_set_xid_limits(vacstmt->freeze_min_age, vacstmt->freeze_table_age,
onerel->rd_rel->relisshared,
&OldestXmin, &FreezeLimit, &freezeTableLimit);
scan_all = TransactionIdPrecedesOrEquals(onerel->rd_rel->relfrozenxid,
freezeTableLimit);
vacrelstats = (LVRelStats *) palloc0(sizeof(LVRelStats));
@ -171,7 +176,7 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt,
vacrelstats->hasindex = (nindexes > 0);
/* Do the vacuuming */
lazy_scan_heap(onerel, vacrelstats, Irel, nindexes, vacstmt->scan_all);
lazy_scan_heap(onerel, vacrelstats, Irel, nindexes, scan_all);
/* Done with indexes */
vac_close_indexes(nindexes, Irel, NoLock);