Robert Haas fd31cd2651 Don't vacuum all-frozen pages. ... Commit a892234f83 gave us enough infrastructure to avoid vacuuming pages where every tuple on the page is already frozen. So, replace the notion of a scan_all or whole-table vacuum with the less onerous notion of an "aggressive" vacuum, which will pages that are all-visible, but still skip those that are all-frozen. This should greatly reduce the cost of anti-wraparound vacuuming on large clusters where the majority of data is never touched between one cycle and the next, because we'll no longer have to read all of those pages only to find out that we don't need to do anything with them. Patch by me, reviewed by Masahiko Sawada.		2016-03-10 16:14:42 -05:00
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src	Don't vacuum all-frozen pages.	2016-03-10 16:14:42 -05:00
KNOWN_BUGS	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
MISSING_FEATURES	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
Makefile	Remove maintainer-check target, fold into normal build	2013-10-10 20:11:56 -04:00
TODO	Update URL.	2008-08-21 20:15:31 +00:00
bug.template	Stamp HEAD as 9.6devel.	2015-06-30 14:01:15 -04:00