Postgres Pro
Downloads
Home   >   mailing lists

pgsql: Fix logic in lazy vacuum to decide if it's worth trying to - Mailing list pgsql-committers

From heikki@postgresql.org (Heikki Linnakangas)
Subject pgsql: Fix logic in lazy vacuum to decide if it's worth trying to
Date
Msg-id 20090106145603.95EC0754A1C@cvs.postgresql.org
Whole thread Raw
List pgsql-committers
Tree view 
Log Message:
-----------
Fix logic in lazy vacuum to decide if it's worth trying to truncate the heap.
If the table was smaller than REL_TRUNCATE_FRACTION (= 16) pages, we always
tried to acquire AccessExclusiveLock on it even if there was no empty pages
at the end.

Report by Simon Riggs. Back-patch all the way to 7.4.

Tags:
----
REL8_0_STABLE

Modified Files:
--------------
    pgsql/src/backend/commands:
        vacuumlazy.c (r1.50.4.6 -> r1.50.4.7)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/vacuumlazy.c?r1=1.50.4.6&r2=1.50.4.7)

pgsql-committers by date:

Previous
From: heikki@postgresql.org (Heikki Linnakangas)
Date:
Subject: pgsql: Fix logic in lazy vacuum to decide if it's worth trying to
Next
From: heikki@postgresql.org (Heikki Linnakangas)
Date:
Subject: pgsql: Fix logic in lazy vacuum to decide if it's worth trying to