alternatives to the 20MB block limit, measure first!

alternatives to the 20MB block limit, measure first!
From: Ron @ 2015-05-25 20:14 UTC ( / )
  To: bitcoin-development



Hello all,

With all the discussion about the Block size limit, I thought it would be interesting to measure, in some sense, the average Tx size.  Then given a fixed average block period (Bp) of 10 minutes (i.e 600 seconds), all one needs to do to estimate an average block size is ask the question: what average transaction rate (tps) do you want?

So for tps ~ 10 (Tx/sec) and an average transaction size (avgTxSz) of 612 Bytes (last ten blocks up to block 357998 (2:05pm EDT 5/25/2015) we have a block size of 612 * 10 * 600 = 3,672,000 Bytes

Alternatively, given an avgTxSz ~612 and maxBl = 1,000,000 we have (maxBl / avgBlSz) / Bp is the actual current max tps, which is ~2.72 tps.

The avgBlSz for the 10 blocks up to block # 357999 is ~ 576 Bytes, so the current possible tps is ~2.89 and the maxBL for a tps = 10 is 3,456,000 bytes.

So I think one should state one's assumed tps and a measured or presumed avgTxSz before saying what a maxBl should be. So for a maxBl ~20,000,000 Bytes and a current avgTxSz ~600 Bytes, the tps ~55.5 FWIW

Ron (aka old c coder)