Re: POC: make mxidoff 64 bits

From: Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>
To: Maxim Orlov <orlovmg(at)gmail(dot)com>
Cc: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Alexander Korotkov <aekorotkov(at)gmail(dot)com>, wenhui qiu <qiuwenhuifx(at)gmail(dot)com>, Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: POC: make mxidoff 64 bits
Date: 2025-12-01 12:35:11
Message-ID: CAExHW5s5YN3rEi1JOEaa-7FPdkAYJv_jG67SO28n-On6FW6KAQ@mail.gmail.com
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On Mon, Dec 1, 2025 at 2:23 PM Maxim Orlov <orlovmg(at)gmail(dot)com> wrote:
>
>
>
> On Fri, 28 Nov 2025 at 16:17, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com> wrote:
>>
>> One more thing,
>> An UPDATE waits for FOR SHARE query to finish, and vice versa. In my
>> experiments I didn't see an UPDATE creating a multi-xact. Why do we
>> have UPDATEs in the load created by the test? Am I missing something?
>
>
> As far as I remember, this was done on purpose to create different
> multixact members statuses randomly.

In that case, better to include that in the comments.

--
Best Wishes,
Ashutosh Bapat

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