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pgsql: Only skip pages marked as clean in the visibility map, if the

From: heikki(at)postgresql(dot)org (Heikki Linnakangas)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Only skip pages marked as clean in the visibility map, if the
Date: 2009-01-22 19:25:00
Message-ID: 20090122192500.7C9307559ED@cvs.postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committers
Log Message:
-----------
Only skip pages marked as clean in the visibility map, if the last 32
pages were marked as clean as well. The idea is to avoid defeating OS
readahead by skipping a page here and there, and also makes it less likely
that we miss an opportunity to advance relfrozenxid, for the sake of only
a few skipped pages.

Modified Files:
--------------
    pgsql/src/backend/commands:
        vacuumlazy.c (r1.117 -> r1.118)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/vacuumlazy.c?r1=1.117&r2=1.118)

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Next:From: Tom LaneDate: 2009-01-22 20:16:10
Subject: pgsql: Support column-level privileges, as required by SQL standard.
Previous:From: Heikki LinnakangasDate: 2009-01-22 19:16:31
Subject: pgsql: Update comments to reflect that tgenabled is not a boolean

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