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A comment on Ask HN: Have you ever regretted working on a product?. Parent comment

Re:Ask HN: Have you ever regretted working on a product? by exikyut on Thursday November 22, 2018 @10:13AM (#18510410)
> "Real fast" CPUs, like the latest and greatest Intel CPUs, are actually pretty difficult to get deterministic bounds on. There are factors like unpreventable SMI events, possibility of L1/L2/L3 cache misses, etc.

Oh yeah. I remember reading something along the same lines about x86 a while back. I guess it didn't really go in properly, heh. Thanks

I'm reminded of the "x86 is high level" thing: https://news.ycombinator.com/item?id=9264195

Also, I think the iPhone 6's NVMe apparently uses a Cortex-R: https://ramtin-amin.fr/#nvmepcie

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