| From: | alvherre(at)postgresql(dot)org (Alvaro Herrera) |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Reduce the size of memory allocations by lazy vacuum when |
| Date: | 2007-09-24 03:53:02 |
| Message-ID: | 20070924035302.4BC3B753E4C@cvs.postgresql.org |
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| Lists: | pgsql-committers |
Log Message:
-----------
Reduce the size of memory allocations by lazy vacuum when processing a small
table, by allocating just enough for a hardcoded number of dead tuples per
page. The current estimate is 200 dead tuples per page.
Per reports from Jeff Amiel, Erik Jones and Marko Kreen, and subsequent
discussion.
CVS: ----------------------------------------------------------------------
CVS: Enter Log. Lines beginning with `CVS:' are removed automatically
CVS:
CVS: Committing in .
CVS:
CVS: Modified Files:
CVS: commands/vacuumlazy.c
CVS: ----------------------------------------------------------------------
Tags:
----
REL8_2_STABLE
Modified Files:
--------------
pgsql/src/backend/commands:
vacuumlazy.c (r1.81.2.3 -> r1.81.2.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/vacuumlazy.c?r1=1.81.2.3&r2=1.81.2.4)
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