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From: Maxim Orlov <orlovmg@gmail.com>
Date: Mon, 27 Oct 2025 18:54:35 +0300
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Message-ID: 
 <CACG=ezbPUASDL1eJ+c-ZkJMwRPukvp3EL0q1vSUa1h+fnX8y3g@mail.gmail.com>
Subject: Re: POC: make mxidoff 64 bits
To: wenhui qiu <qiuwenhuifx@gmail.com>
Cc: Alexander Korotkov <aekorotkov@gmail.com>,
 Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>,
	Heikki Linnakangas <hlinnaka@iki.fi>,
 Postgres hackers <pgsql-hackers@lists.postgresql.org>
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Content-Type: multipart/alternative; boundary="0000000000003b2088064225eb22"

--0000000000003b2088064225eb22
Content-Type: text/plain; charset="UTF-8"

Here is a new patch set @ 10b5bb3bffaee8

As previously stated, the patch set implements the concept of saving the
"difference" between page offsets in order to save disc space.

The second significant change was that I decided to modify the
pg_upgrade portion as suggested by Heikki above.

At the very least, the logic becomes much simpler and completely
replicates what is done in the multxact.c module and provide some
optimization.

Perhaps this will be easier to comprehend and analyse than attempting
to correctly convert bytes from one format to another.

In the near future, I intend to focus on testing and implement a test
suite.

-- 
Best regards,
Maxim Orlov.

--0000000000003b2088064225eb22
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Here is a new patch set @ 10b5bb3bffaee8<div><br></div><di=
v>As previously stated, the patch set implements the concept of saving the<=
br>&quot;difference&quot; between page offsets in order to save disc space.=
<br><br>The second significant change was that I decided to modify the<br>p=
g_upgrade portion as suggested by Heikki above.<br><br>At the very least, t=
he logic becomes much simpler and completely<br>replicates what is done in =
the multxact.c module and provide some<br>optimization.<br><br>Perhaps this=
 will be easier to comprehend and analyse than attempting<br>to correctly c=
onvert bytes from one format to another. <br><br>In the near future, I inte=
nd to focus on testing and implement a test<br>suite.</div><br><span class=
=3D"gmail_signature_prefix">-- </span><br><div dir=3D"ltr" class=3D"gmail_s=
ignature"><div dir=3D"ltr"><div>Best regards,<br></div><div>Maxim Orlov.</d=
iv></div></div></div>

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