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by moloch-hai
1295 days ago
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You can get those bugs when you are doing your own atomics, and your code relies on x86's relaxed memory semantics. It looks like their code is JS and Go, which buries that stuff. Services they use were already proven out on ARM. (Or, maybe, are not on ARM?) Relaxed memory bus semantics imposes a pretty substantial performance cost. Depending on how they are billed, this might account for a big chunk of their lower cost. But probably not. Their real problem is that they are firmly entrenched in proprietary Amazon services, so switching to another cloud would be very difficult. Amazon can raise prices 35% anytime, and what can they do? |
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