Horton

Re: Replace known_assigned_xids_lck by memory barrier

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Nathan Bossart <nathandbossart@gmail.com>
Cc: Michail Nikolaev <michail.nikolaev@gmail.com>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>, Tom Lane <tgl@sss.pgh.pa.us>
Date: 2023-09-01T19:53:54Z
Lists: pgsql-hackers 
On Fri, Sep 1, 2023 at 3:41 PM Nathan Bossart <nathandbossart@gmail.com> wrote:
> On Wed, Aug 16, 2023 at 01:07:15PM -0700, Nathan Bossart wrote:
> > Ah, that explains it.  v5 of the patch is attached.
>
> Barring additional feedback, I plan to commit this patch in the current
> commitfest.

I'm not an expert on this code but I looked at this patch briefly and
it seems OK to me.

-- 
Robert Haas
EDB: http://www.enterprisedb.com

Commits

  1. Replace known_assigned_xids_lck with memory barriers.

  2. Replace the KnownAssignedXids hash table with a sorted-array data structure,