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A comment on How much do amd64 microarchitecture levels help in Go?. Parent comment

Re:How much do amd64 microarchitecture levels help in Go? by seddonm1 on Tuesday June 09, 2026 @01:56AM (#48457072)
Based on the now-deprecated Clear Linux it does seem that these optimizations add up [0] and so maybe we should be considering them more broadly?

[0] https://www.phoronix.com/review/clear-linux-48p-ubuntu/6

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Re:How much do amd64 microarchitecture levels help in Go? by Someone on Tuesday June 09, 2026 @05:19AM (#48458656)
AFAIK, that wasn’t solely a matter of picking the optimal compilation flags. It also included profile-guided optimizations and kernel tweaks.
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Re:How much do amd64 microarchitecture levels help in Go? by XorNot on Tuesday June 09, 2026 @05:46AM (#48458847)
Doesn't that get into the domain of a distro like Gentoo though? (Or sort of Nix as well) - rebuild everything to precisely target your actual architecture.
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Re:How much do amd64 microarchitecture levels help in Go? by monster_truck on Tuesday June 09, 2026 @07:17AM (#48459556)
Yes, and the maximally performant configurations are at odds with a usefully hardened security posture. This only gets more true as time goes on and additional mitigations pile up.
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