Re: Idea for getting rid of VACUUM FREEZE on cold pages

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, postgres hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Idea for getting rid of VACUUM FREEZE on cold pages
Date: 2010-05-25 20:49:23
Message-ID: 4BFC37D3.3070908@agliodbs.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

Alvaro,

>> This sounds like extending Xid to 64 bits, without having to store the
>> high bits everywhere. Was this discussed in the PGCon devs meeting?

Essentially, yes.

One of the main objections to raising XID to 64-bit has been the per-row
overhead. But adding 4 bytes per page wouldn't be much of an impact.

--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com

In response to

Browse pgsql-hackers by date

  From Date Subject
Next Message Simon Riggs 2010-05-25 20:50:21 Re: Exposing the Xact commit order to the user
Previous Message Jan Wieck 2010-05-25 20:41:03 Re: Exposing the Xact commit order to the user