3 ms·
Not an expert, but I feel like the answer is not much. ECC RAM is not, to my knowledge, considerably more expensive to produce - the reason it costs more is bec
by staticassertion 5y ago
Not an expert, but I feel like the answer is not much. ECC RAM is not, to my knowledge, considerably more expensive to produce - the reason it costs more is because it only works with specific devices, so it's more of a market cost.
ECC RAM is pretty effective as-is against rowhammer, and imo you could very likely tweak ECC's approach to get even further.
The 'worst case' solution wouldn't be more than 2x, right? Since you'd just have to keep a clone of RAM, but obviously shuffled so that the same errors wouldn't occur in the same places. So 2x seems like the sort of absurd upper bound, but I feel like we could do a lot better.