Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1q1fmb-0003w0-HO for pgsql-hackers@arkaria.postgresql.org; Wed, 24 May 2023 04:07:29 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1q1fma-0000Lu-7M for pgsql-hackers@arkaria.postgresql.org; Wed, 24 May 2023 04:07:28 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1q1fmZ-0000Lk-TX for pgsql-hackers@lists.postgresql.org; Wed, 24 May 2023 04:07:27 +0000 Received: from momjian.us ([72.94.173.45]) by makus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1q1fmX-001Za0-94 for pgsql-hackers@postgresql.org; Wed, 24 May 2023 04:07:26 +0000 Received: from bruce by momjian.us with local (Exim 4.94.2) (envelope-from ) id 1q1fmW-00ARiI-3G; Wed, 24 May 2023 00:07:24 -0400 Date: Wed, 24 May 2023 00:07:24 -0400 From: Bruce Momjian To: John Naylor Cc: PostgreSQL-development Subject: Re: PG 16 draft release notes ready Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On Tue, May 23, 2023 at 12:14:04PM +0700, John Naylor wrote: > On Tue, May 23, 2023 at 11:26 AM Bruce Momjian wrote: > > > > Allow xid/subxid searches to use vector operations on x86-64 > architectures > > > (Nathan Bossart) > > > > > > When moved to the performance section, it would be something like "improve > > > scalability when a large number of write transactions are in progress". > > > > Uh, again, see above, this does not impact user behavior or choices.   > > So that turns a scalability improvement into "source code"? > > > I assume this is x86-64-only. > > Au contraire, I said "For anything using 16-byte vectors the two architectures > are equivalently supported". It's not clear from looking at individual commit > messages, that's why I piped in to help. Okay, updated text: Allow xid/subxid searches to use vector operations (Nathan Bossart) -- Bruce Momjian https://momjian.us EDB https://enterprisedb.com Only you can decide what is important to you.