> The x86 atomic operations are fundamentally expensive. ARM’s new LSE extensions are more flexible and can be faster. I don’t know how much this matters in pra

> The x86 atomic operations are fundamentally expensive. ARM’s new LSE extensions are more flexible and can be faster. I don’t know how much this matters in practice, but there are certainly workloads for which it’s a big deal. There's also the RcPc stuff in ARM 8.3 and 8.4 that could make acquire/release semantics cheaper. > the x86 ecosystem is full of legacy baggage. Luckily for ARM servers we have SBSA that adds things like UEFI and ACPI to the ARM platform. :)