if remaining <= ratelimit_period and ratelimit_period > delay * 2:
min_delay = block_time / dividor
# min_delay + max_delay / 2 = ratelimited_delay
extra_delay = 2 * ratelimited_delay - 3 * min_delay
delay = min_delay + extra_delay * (eta - mark_time) / ratelimit_period
assert mark_time + delay < eta
the old code calculates a linear relation based on mark_time and
ratelimit_period
it's using ratelimited_delay = ratelimit_period / ratelimit_count
instead we could track ratelimit_count - # calls, call it
remaining_count or remaining_ratelimit_count [and figure out one
single delay (or chart a line again) based on this] [and ensure the
last two queries at eta and eta-min_period !]
