Re: [PATCH] audo-detect and use -moutline-atomics compilation flag for aarch64

On 11/11/21, 11:14 AM, "Christoph Berg" <myon(at)debian(dot)org> wrote:

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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.

The binary compiled with -moutline-atomics works for all arm64 architecture versions. I don't believe there would be new package engineering required unless I'm missing something, but if there is, yes, we're absolutely happy to help.

Thanks,
Ali