From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 8C22CEDC for ; Sat, 19 Dec 2015 18:20:46 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from outmail148109.authsmtp.co.uk (outmail148109.authsmtp.co.uk [62.13.148.109]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id D98E5ED for ; Sat, 19 Dec 2015 18:20:45 +0000 (UTC) Received: from mail-c232.authsmtp.com (mail-c232.authsmtp.com [62.13.128.232]) by punt23.authsmtp.com (8.14.2/8.14.2/) with ESMTP id tBJIKiaI058148; Sat, 19 Dec 2015 18:20:44 GMT Received: from muck (S0106e091f5827ad2.ok.shawcable.net [24.71.232.17]) (authenticated bits=128) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id tBJIKdAq046791 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Sat, 19 Dec 2015 18:20:42 GMT Date: Sat, 19 Dec 2015 10:20:38 -0800 From: Peter Todd To: Chun Wang <1240902@gmail.com> Message-ID: <20151219182038.GA12893@muck> References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="nFreZHaLTZJo0R7j" Content-Disposition: inline In-Reply-To: X-Server-Quench: 3703f652-a67d-11e5-829e-00151795d556 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aAdMdwsUHFAXAgsB AmMbWlxeUl17XWE7 aQ5PagRDYElMQQRt T01BRU1TWkEae2V6 Um9fUh10cAxHNnp4 bE4sXXdbXxJ8cERg E0hTQXAHZDJldWgd WRVFdwNVdQJNdxoR b1V5GhFYa3VsNCMk FAgyOXU9MCtqYBhV T0kMK1kITE8QE3Y7 SVgHFCVnF0kCTCZ7 NB00JxYHHEEMNkl6 O1ZDEV4VLxIIDwxY Ek0FCj4RLV0GTClj DQ5bUk4CWDxbWjtR CxFgJREACDhVUSkQ GEpARnkA X-Authentic-SMTP: 61633532353630.1037:706 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 24.71.232.17/587 X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: bitcoin-dev@lists.linuxfoundation.org Subject: Re: [bitcoin-dev] The increase of max block size should be determined by block height instead of block time X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Development Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 19 Dec 2015 18:20:46 -0000 --nFreZHaLTZJo0R7j Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Dec 19, 2015 at 03:17:03AM +0800, Chun Wang via bitcoin-dev wrote: > In many BIPs we have seen, include the latest BIP202, it is the block > time that determine the max block size. From from pool's point of > view, it cannot issue a job with a fixed ntime due to the existence of > ntime roll. It is hard to issue a job with the max block size unknown. > For developers, it is also easier to implement if max block size is a > function of block height instead of time. Block height is also much > more simple and elegant than time. If size is calculated from the median time past, which is fixed for a given block and has no dependency on the block header's nTime field, does that solve your problem? By "median time past" I mean the median time for the previous block. --=20 'peter'[:-1]@petertodd.org 00000000000000000188b6321da7feae60d74c7b0becbdab3b1a0bd57f10947d --nFreZHaLTZJo0R7j Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- iQGrBAEBCACVBQJWdZ/zXhSAAAAAABUAQGJsb2NraGFzaEBiaXRjb2luLm9yZzAw MDAwMDAwMDAwMDAwMDAwMTg4YjYzMjFkYTdmZWFlNjBkNzRjN2IwYmVjYmRhYjNi MWEwYmQ1N2YxMDk0N2QvFIAAAAAAFQARcGthLWFkZHJlc3NAZ251cGcub3JncGV0 ZUBwZXRlcnRvZC5vcmcACgkQwIXyHOf0udwnZQf9HB0CzydgHXpytcheavW+c3oo H2uouvfJP3V026G6PvHXmxJ/cbe/EFrTfL6D3BvdxH7bgYgWLJUBldVE+Wgx8MjB YAT8MIRAEhUCbpz7pcEk8oIZgG9Mxirnn/N+SdI2o/jOYLBzkvfBuP/+Y3a60n7t YIlc9IHq3+w7uV6RMw0EeWaWNjbFPfxtdoiIRYnePrQ1Q9eCdK+LdFblRPUVJxOT NM/X7VApQeOYoYRInDDcuio6CVAD3+rJ7/pDxqKRBs9qWgp3+gYcKi2+rTCm+JA4 MuYow3Oy9GsSxpVGk2SQ2kPB/6cnIAjOflEU5fu+94M5XeN0xrxxV/Y5TShang== =XpBe -----END PGP SIGNATURE----- --nFreZHaLTZJo0R7j--