I am aware of that, but there have been NEON AES optimisations floating around, e.g.: https://www.linaro.org/blog/accelerated-aes-for-the-arm64-linux-kernel/ I guess what I'm asking is if EL8 aarch64 ships with any such thing enabled, and any other tweaks I could try to squeeze more ssh speed out of it. I'm finding that piping data over aes-128-cbc (which seems to be the fastest implemented cipher) over gigabit ethernet tops out at about 30MB/s per CPU core, with each ssh session being limited to this (even though I can run 8 sessions in parallel at that speed). Gordan On Wed, Jul 1, 2020 at 7:13 PM Marcin Juszkiewicz < marcin.juszkiewicz at linaro.org> wrote: > W dniu 01.07.2020 o 19:50, Gordan Bobic pisze: > > 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. > > X-Gene cpu present in your machine lacks AES instructions support. > _______________________________________________ > Arm-dev mailing list > Arm-dev at centos.org > https://lists.centos.org/mailman/listinfo/arm-dev > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/arm-dev/attachments/20200701/41952ed9/attachment-0005.html>