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From: Pop, Sebastian <[email protected]>
To: Christoph Berg <[email protected]>
Cc: PostgreSQL in Debian <[email protected]>
Cc: Saidi, Ali <[email protected]>
Cc: Csoma, Csaba <[email protected]>
Subject: Re: [PATCH] audo-detect and use -moutline-atomics compilation flag for aarch64
Date: Thu, 11 Nov 2021 17:11:02 +0000
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>
	<[email protected]>

> 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.

Thanks,
Sebastian

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