Date: Thu, 11 Nov 2021 18:13:35 +0100
From: Christoph Berg <myon@debian.org>
To: "Pop, Sebastian" <spop@amazon.com>
Cc: PostgreSQL in Debian <pgsql-pkg-debian@postgresql.org>,
	"Saidi, Ali" <alisaidi@amazon.com>,
	"Csoma, Csaba" <csabac@amazon.com>
Subject: Re: [PATCH] audo-detect and use -moutline-atomics compilation flag
 for aarch64
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Mail-Followup-To: Christoph Berg <myon@debian.org>,
	"Pop, Sebastian" <spop@amazon.com>,
	PostgreSQL in Debian <pgsql-pkg-debian@postgresql.org>,
	"Saidi, Ali" <alisaidi@amazon.com>,
	"Csoma, Csaba" <csabac@amazon.com>
References: <1636497120606.54267@amazon.com>
 <1635266397152.45198@amazon.com>
 <YY1LHr9YYQb0Ds8h@msg.df7cb.de>
 <1636650661046.35954@amazon.com>
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Re: Pop, Sebastian
> > The benchmarks in
> > https://www.postgresql.org/message-id/1C8D0E58-FB33-4105-AC00-8FA07621F5DD%40amazon.com
> > don't look like the option is a game-changer.
> 
> Since then we have seen benchmarks that are several orders of magnitude faster with LSE instructions.
> I will get the new data and share.
> 
> > Even if we are convinced, we don't have the infrastructure in the
> > package yet to do architecture- and distribution-specific
> > optimizations. Would you (Amazon?) be willing to sponsor the required
> > package engineering?
> 
> Yes, I am willing to do whatever is necessary to enable the flag on PostgreSQL builds for Ubuntu 20.04.
> Please point me to the (git?) repo and the files that need to be changed.

https://salsa.debian.org/postgresql/postgresql-common.git
https://salsa.debian.org/postgresql/postgresql.git
https://git.postgresql.org/gitweb/?p=pgapt.git;a=summary

Christoph