What is it?
They are testing big blocks in another chain or simulator, or what?
this is a testnet for segwit. before a release to public or on the mainnet Core is testing all the improvements.
Do you know how much of it is witness data and how relevant this would be to the kind of usage patterns we have today? Are these kinds of segwit block sizes perhaps more relevant for when LN is launched?
LN is a other story because it is off-chain. just the start and the end is manifested in the blockchain. the other whole lifecycle of certain LN activities do not affect the blockchain.
SegWit is a speration of data from the blockchain which is not immediate necessary for txs. and because of this you can see blocks of 3.6 MB. the data which is necessary is stored in the blockchain and the other data is seperated. in sum you have data of 3.6 MB for example but the necessary data is just 0.9 MB.
The reason I ask is that, as I understood, the ins and outs of the LN streams are some of the few txs which would use that much witness data.
In any event I'm guessing these tests will be used to block any notion of a maxblocksize hf as it's pretty close to the 4mb total they agreed upon with the miners earlier this year.
It will be interesting to see what LN does to centralization over the coming years. I hope it's not the beginning of the end.
