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Micah Elizabeth Scott
6a0809c4e3
I don't think the concept of "minimum effort" is really useful to us, so this patch removes it entirely and consequentially changes the way that "total" effort is calculated so that we don't rely on any minimum and we instead ramp up effort no faster than necessary. If at least some portion of the attack is conducted by clients that avoid PoW or provide incorrect solutions, those (potentially very cheap) attacks will end up keeping the pqueue full. Prior to this patch, that would cause suggested efforts to be unnecessarily high, because rounding these very cheap requests up to even a minimum of 1 will overestimate how much actual attack effort is being spent. The result is that this patch is a simplification and it also allows a slower start, where PoW effort jumps up either by a single unit or by an amount calculated from actual effort in the queue. Signed-off-by: Micah Elizabeth Scott <beth@torproject.org>
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