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> incredibly good implementations on x86 In my experience Ryzen support on Linux is far from optimal. Have experienced tons of issues on zen+ and zen 2. And d
by kramerger 4y ago
> incredibly good implementations on x86
In my experience Ryzen support on Linux is far from optimal. Have experienced tons of issues on zen+ and zen 2.
And don't forget that the x64 code is slowed down by tons of security mitigations. I don't think most of these are available on M2 yet.
- cassianoleal 4y ago> Ryzen support on Linux is far from optimal What kinds of issues have you seen? I've been running a home server with a Ryzen 7 PRO 4750G and so far it's been stellar. > slowed down by tons of security mitigations. I don't think most of these are available on M2 yet. Are they needed at all? I thought the security mitigations were mostly for x86-specific architectural issues. Would you mind to elaborate?
- Macha 4y agoNope, Spectre type attacks work on ARM too: https://www.pcgamer.com/intel-amd-and-arm-cpus-hit-by-new-spectre-vulnerability/ https://www.pcgamer.com/intel-amd-and-arm-cpus-hit-by-new-sp... Now the existing discovered ones may not, but I'm sure in time there will be ones for Apple Silicon too. Just like how people for the longest time thought AMD was safer than Intel in this regard, or that ARM wasn't vulnerable.
- kllrnohj 4y agoARM (and IBM POWER) was vulnerable to meltdown, the huge practical bypass that AMD wasn't vulnerable to at all. Nothing about these attacks have been ISA dependent.
- kramerger 4y agoThere have been some issues with power management, load distribution and stability. A quick googling will show you more. Regarding the other point: run lscpu and compare enabled mitigations on Zen3 and M2. We still need a proper analysis to figure out which ones must be enabled on M2.