| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> |
| Cc: | Josh Berkus <josh(at)agliodbs(dot)com>, Jesper Krogh <jesper(at)krogh(dot)cc>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Idea for getting rid of VACUUM FREEZE on cold pages |
| Date: | 2010-05-27 19:56:44 |
| Message-ID: | AANLkTinZ0m7iS2bvFQlxIWXWf8LSMRML06n86Y2_Ax3E@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, May 27, 2010 at 3:52 PM, Kevin Grittner
<Kevin(dot)Grittner(at)wicourts(dot)gov> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>> On Thu, May 27, 2010 at 3:15 PM, Kevin Grittner
>
>>> (a) The tuples were written within the same transaction which
>>> created or truncated the table.
>
>> In case (a), you mess up visibility with respect to other
>> command-IDs within the transaction.
>
> Surely that problem is surmountable?
I proposed an idea at PGCon, but I believe Tom and Heikki thought it
was far too grotty to consider.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise Postgres Company
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