From: Ron <rdwnj@yahoo•com>
To: "bitcoin-development@lists•sourceforge.net"
<bitcoin-development@lists•sourceforge.net>
Subject: [Bitcoin-development] alternatives to the 20MB block limit, measure first!
Date: Mon, 25 May 2015 20:14:17 +0000 (UTC) [thread overview]
Message-ID: <542308084.933798.1432584857775.JavaMail.yahoo@mail.yahoo.com> (raw)
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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)
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