diff options
Diffstat (limited to 'src/backend/commands/vacuumlazy.c')
| -rw-r--r-- | src/backend/commands/vacuumlazy.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/src/backend/commands/vacuumlazy.c b/src/backend/commands/vacuumlazy.c index 3ecce78741..66ef463719 100644 --- a/src/backend/commands/vacuumlazy.c +++ b/src/backend/commands/vacuumlazy.c @@ -87,7 +87,7 @@ typedef struct LVRelStats bool scanned_all; /* have we scanned all pages (this far)? */ /* Overall statistics about rel */ BlockNumber rel_pages; - double old_rel_tuples; /* previous value of pg_class.reltuples */ + double old_rel_tuples; /* previous value of pg_class.reltuples */ double rel_tuples; /* counts only tuples on scanned pages */ BlockNumber pages_removed; double tuples_deleted; @@ -175,14 +175,14 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt, vacrelstats = (LVRelStats *) palloc0(sizeof(LVRelStats)); - vacrelstats->scanned_all = true; /* will be cleared if we skip a page */ + vacrelstats->scanned_all = true; /* will be cleared if we skip a page */ vacrelstats->old_rel_tuples = onerel->rd_rel->reltuples; vacrelstats->num_index_scans = 0; /* Open all indexes of the relation */ vac_open_indexes(onerel, RowExclusiveLock, &nindexes, &Irel); vacrelstats->hasindex = (nindexes > 0); - + /* Do the vacuuming */ lazy_scan_heap(onerel, vacrelstats, Irel, nindexes, scan_all); @@ -208,9 +208,9 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt, * Update statistics in pg_class. But only if we didn't skip any pages; * the tuple count only includes tuples from the pages we've visited, and * we haven't frozen tuples in unvisited pages either. The page count is - * accurate in any case, but because we use the reltuples / relpages - * ratio in the planner, it's better to not update relpages either if we - * can't update reltuples. + * accurate in any case, but because we use the reltuples / relpages ratio + * in the planner, it's better to not update relpages either if we can't + * update reltuples. */ if (vacrelstats->scanned_all) vac_update_relstats(onerel, @@ -279,7 +279,7 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats, int i; PGRUsage ru0; Buffer vmbuffer = InvalidBuffer; - BlockNumber all_visible_streak; + BlockNumber all_visible_streak; pg_rusage_init(&ru0); @@ -318,8 +318,8 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats, bool all_visible; /* - * Skip pages that don't require vacuuming according to the - * visibility map. But only if we've seen a streak of at least + * Skip pages that don't require vacuuming according to the visibility + * map. But only if we've seen a streak of at least * SKIP_PAGES_THRESHOLD pages marked as clean. Since we're reading * sequentially, the OS should be doing readahead for us and there's * no gain in skipping a page now and then. You need a longer run of @@ -558,9 +558,10 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats, all_visible = false; break; } + /* - * The inserter definitely committed. But is it - * old enough that everyone sees it as committed? + * The inserter definitely committed. But is it old + * enough that everyone sees it as committed? */ xmin = HeapTupleHeaderGetXmin(tuple.t_data); if (!TransactionIdPrecedes(xmin, OldestXmin)) @@ -922,8 +923,8 @@ lazy_cleanup_index(Relation indrel, return; /* - * Now update statistics in pg_class, but only if the index says the - * count is accurate. + * Now update statistics in pg_class, but only if the index says the count + * is accurate. */ if (!stats->estimated_count) vac_update_relstats(indrel, |