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Allow VACUUM to complete faster by avoiding scanning the indexes when no

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rows were removed from the heap by the VACUUM.

Simon Riggs
This commit is contained in:
Bruce Momjian
2006-02-11 16:59:09 +00:00
parent 85d8ee846b
commit bf324946b3
7 changed files with 65 additions and 29 deletions
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4
src/include/access/genam.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/genam.h,v 1.54 2005/12/03 05:51:03 tgl Exp $
* $PostgreSQL: pgsql/src/include/access/genam.h,v 1.55 2006/02/11 16:59:09 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -38,6 +38,8 @@ typedef struct IndexBulkDeleteResult
BlockNumber num_pages; /* pages remaining in index */
BlockNumber pages_removed; /* # removed by bulk-delete operation */
double num_index_tuples; /* tuples remaining */
/* should set to -1 if index not scanned */
/* because no records to delete */
double tuples_removed; /* # removed by bulk-delete operation */
BlockNumber pages_deleted; /* # unused pages in index */
BlockNumber pages_free; /* # pages available for reuse */