PostgreSQL TODO List
====================
-Last updated: Fri Jun 17 09:47:23 EDT 2005
+Last updated: Fri Jun 17 15:20:21 EDT 2005
The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html.
This allows vacuum to target specific pages for possible free space
without requiring a sequential scan.
+* Auto-fill the free space map by scanning the buffer cache or by
+ checking pages written by the background writer
* Create a bitmap of pages that need vacuuming
Instead of sequentially scanning the entire table, have the background
VACUUM can look at just those pages rather than the entire table. In
the event of a system crash, the bitmap would probably be invalidated.
-* Auto-fill the free space map by scanning the buffer cache or by
- checking pages written by the background writer
* Auto-vacuum
o Move into the backend code
o Use free-space map information to guide refilling
-Last updated: Fri Jun 17 09:47:23 EDT 2005
+Last updated: Fri Jun 17 15:20:21 EDT 2005
The most recent version of this document can be viewed at
This allows vacuum to target specific pages for possible free space
without requiring a sequential scan.
+
Auto-fill the free space map by scanning the buffer cache or by
+ checking pages written by the background writer
Create a bitmap of pages that need vacuuming
Instead of sequentially scanning the entire table, have the background
writer or some other process record pages that have expired rows, then
VACUUM can look at just those pages rather than the entire table. In
the event of a system crash, the bitmap would probably be invalidated.
-
Auto-fill the free space map by scanning the buffer cache or by
- checking pages written by the background writer
Auto-vacuum
Move into the backend code