[arch-general] Fedora Speeds Up Python 3.
geokozey at mailfence.com
Tue Nov 26 17:35:15 UTC 2019
> From: Ralph Corderoy <ralph at inputplus.co.uk>
> Sent: Tue Nov 26 11:07:36 CET 2019
> To: <arch-general at archlinux.org>
> Subject: [arch-general] Fedora Speeds Up Python 3.
> I thought this might be of interest.
> By building with -fno-semantic-interposition they remove the PLT that
> provides a level of indirection when calling a libpython function.
> libpython often calls itself and the PLT adds L1-cache pressure plus
> prevents inlining. Gives gains of 25% on some workloads.
> Cheers, Ralph.
Does it work alongside "-fno-plt" flag that Arch uses?
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