A Closer Look at BIP100: The Block Size Proposal Bitcoin Miners are Rallying BehindVoting procedure
While the details of the voting process are not set in stone yet, the PDF as well as Garzik’s comments suggest it works as follows: First, 90 percent of hashing power on the Bitcoin network needs to accept BIP 100 for it to activate. This is a one-time thing that will trigger a hard fork. Once BIP 100 is activated, miners can include a public message in a newly mined block indicating how big (or small) they want the block size limit to be. For every 12,000 blocks (some three months’ worth), the bottom 20 percent of all votes is discarded, after which the minimum is chosen.
Importantly, however, the block-size limit can be only doubled or halved at most. Thus, if more than 20 percent of blocks vote to lower the limit, the maximum block size is decreased to whatever is the lowest suggestion – apart from the bottom 20 percent. If more than 80 percent votes to raise the limit, the maximum block size is also raised to the lowest suggestion – again disregarding the bottom 20 percent. But miners cannot vote the block-size limit up indefinitely. BIP100 has a hard limit of 32 megabytes, meaning the maximum can be reached in five doublings from 1 megabyte. Whether Garzik’s proposal includes a minimum block-size limit remains unclear for now.
https://bitcoinmagazine.com/21747/closer-look-bip100-block-size-proposal-bitcoin-miners-rallying-behind/maybe that proposal is just too complicated and will bring too many problems with it.
iam still in favor of a smooth increase over time 2MB, 4 MB, 8MB, 14 MB...