| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | hemarbruno(at)gmail(dot)com, pgsql-docs(at)lists(dot)postgresql(dot)org |
| Subject: | Re: Transaction ID modulo |
| Date: | 2021-03-09 19:00:13 |
| Message-ID: | 20210309190013.GG26575@momjian.us |
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| Lists: | pgsql-docs |
On Thu, Feb 18, 2021 at 01:54:37PM +0000, PG Doc comments form wrote:
> The following documentation comment has been logged on the website:
>
> Page: https://www.postgresql.org/docs/13/routine-vacuuming.html
> Description:
>
> Hello,
>
> transaction ID modulo is not correct.
>
> The sentence "Normal XIDs are compared using modulo-2^32 arithmetic" should
> be "Normal XIDs are compared using modulo-2^31 arithmetic"
Uh, we use full 32-bit values that wrap around; the top bit is just
another bit to us. I think the docs are correct.
--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com
The usefulness of a cup is in its emptiness, Bruce Lee
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