[Arm-dev] AES / SSH Performance on aarch64

Wed Jul 1 17:50:21 UTC 2020
Gordan Bobic <gordan at redsleeve.org>

I'm finding that ssh on my Gigabyte MP30-AR1 is rather slow, presumably
because there are no AES instructions or mitigating optimisations for AES.
Is NEON AES implemented in OpenSSL / OpenSSH package builds on EL8 on
aarch64?

All of the old ciphers that were faster (e.g. arcfour) have long been
removed from OpenSSH, so does anyone have any other tricks for getting more
out of ssh on aarch64? I'm specifically looking for an ssh optimisation
here, I'm hoping to avoid implementing a bypass hack in the workflow (e.g.
setting up netcat over ssh and using that for transfers).

Many thanks.

Gordan
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