postgresql

Commit Graph

Author	SHA1	Message	Date
Tom Lane	cc59049daf	Improve handling of prune/no-prune decisions by storing a page's oldest unpruned XMAX in its header. At the cost of 4 bytes per page, this keeps us from performing heap_page_prune when there's no chance of pruning anything. Seems to be necessary per Heikki's preliminary performance testing.	2007-09-21 21:25:42 +00:00
Bruce Momjian	64058429c5	Add database page inspection /contrib module. Simon and Heikki	2007-05-17 19:11:25 +00:00

Author

SHA1

Message

Date

Tom Lane

cc59049daf

Improve handling of prune/no-prune decisions by storing a page's oldest

unpruned XMAX in its header.  At the cost of 4 bytes per page, this keeps us
from performing heap_page_prune when there's no chance of pruning anything.
Seems to be necessary per Heikki's preliminary performance testing.

2007-09-21 21:25:42 +00:00

Bruce Momjian

64058429c5

Add database page inspection /contrib module.

Simon and Heikki

2007-05-17 19:11:25 +00:00

2 Commits