| From: | Torsten Förtsch <tfoertsch123(at)gmail(dot)com> |
|---|---|
| To: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
| Cc: | PostgreSQL mailing lists <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: vacuum freeze in 96 |
| Date: | 2016-12-14 09:12:23 |
| Message-ID: | CAKkG4_=eekiyZ6d5+n7uyjAL-t4UZc28obVqwgr_o6x8ZV+p7A@mail.gmail.com |
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| Lists: | pgsql-general |
On Wed, Dec 14, 2016 at 5:59 AM, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>
wrote:
> On Wed, Dec 14, 2016 at 5:00 AM, Torsten Förtsch <tfoertsch123(at)gmail(dot)com>
> wrote:
> > one of the major enhancements in 96 is skipping completely frozen pages
> in
> > vacuum freeze. I assume that requires a special bit on the page.
>
> The freeze map uses an additional bit in the vm, and pg_upgrade would
> take care of the conversion.
>
Thanks. That makes sense.
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