Commit Graph

6 Commits

Author SHA1 Message Date
SomaticFanatic 5ef0607da6 Update copyright year to 2020
Update copyright year to 2020
2020-05-06 22:36:54 -04:00
stoffu 467f4c7ed3
tests/block_weight: use integer division when computing median 2019-04-09 19:40:57 +09:00
stoffu 815d08dc5f
tests/block_weight: remove unused MULTIPLIER_SMALL 2019-04-09 19:40:52 +09:00
moneromooo-monero 1a91385eaf
block_weight: fix python 2/3 compatibility 2019-04-01 15:31:52 +00:00
moneromooo-monero fa43b54780
tests: handle any cmake detected python interpreter 2019-03-07 16:46:02 +00:00
moneromooo-monero b8787f4302
ArticMine's new block weight algorithm
This curbs runaway growth while still allowing substantial
spikes in block weight

Original specification from ArticMine:

here is the scaling proposal
Define: LongTermBlockWeight
Before fork:
LongTermBlockWeight = BlockWeight
At or after fork:
LongTermBlockWeight = min(BlockWeight, 1.4*LongTermEffectiveMedianBlockWeight)
Note: To avoid possible consensus issues over rounding the LongTermBlockWeight for a given block should be calculated to the nearest byte, and stored as a integer in the block itself. The stored LongTermBlockWeight is then used for future calculations of the LongTermEffectiveMedianBlockWeight and not recalculated each time.
Define:   LongTermEffectiveMedianBlockWeight
LongTermEffectiveMedianBlockWeight = max(300000, MedianOverPrevious100000Blocks(LongTermBlockWeight))
Change Definition of EffectiveMedianBlockWeight
From (current definition)
EffectiveMedianBlockWeight  = max(300000, MedianOverPrevious100Blocks(BlockWeight))
To (proposed definition)
EffectiveMedianBlockWeight  = min(max(300000, MedianOverPrevious100Blocks(BlockWeight)), 50*LongTermEffectiveMedianBlockWeight)
Notes:
1) There are no other changes to the existing penalty formula, median calculation, fees etc.
2) There is the requirement to store the LongTermBlockWeight of a block unencrypted in the block itself. This  is to avoid possible consensus issues over rounding and also to prevent the calculations from becoming unwieldy as we move away from the fork.
3) When the  EffectiveMedianBlockWeight cap is reached it is still possible to mine blocks up to 2x the EffectiveMedianBlockWeight by paying the corresponding penalty.

Note: the long term block weight is stored in the database, but not in the actual block itself,
since it requires recalculating anyway for verification.
2019-03-04 09:33:58 +00:00