pgsql: Reduce the size of memory allocations by lazy vacuum when

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 03:53:06
Message-ID: 20070924035306.CBFC5753E4C@cvs.postgresql.org
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
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_1_STABLE

Modified Files:
--------------
pgsql/src/backend/commands:
vacuumlazy.c (r1.61.2.5 -> r1.61.2.6)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/vacuumlazy.c?r1=1.61.2.5&r2=1.61.2.6)

Browse pgsql-committers by date

  From Date Subject
Next Message Alvaro Herrera 2007-09-24 03:53:12 pgsql: Reduce the size of memory allocations by lazy vacuum when
Previous Message Alvaro Herrera 2007-09-24 03:53:02 pgsql: Reduce the size of memory allocations by lazy vacuum when