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From: Peter Todd <pete@petertodd.org>
To: Gavin Andresen <gavinandresen@gmail.com>
Cc: bitcoin-dev@lists.linuxfoundation.org
Subject: Re: [bitcoin-dev] Draft BIP : fixed-schedule block size increase
Date: Tue, 23 Jun 2015 15:16:59 -0400	[thread overview]
Message-ID: <20150623191659.GF30235@muck> (raw)
In-Reply-To: <20150622192308.GA23545@savin.petertodd.org>

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On Mon, Jun 22, 2015 at 03:23:09PM -0400, Peter Todd wrote:
> On Mon, Jun 22, 2015 at 02:18:19PM -0400, Gavin Andresen wrote:
> > I promised to write a BIP after I'd implemented
> > increase-the-maximum-block-size code, so here it is. It also lives at:
> > https://github.com/gavinandresen/bips/blob/blocksize/bip-8MB.mediawiki
> 
> It's important that we see a wide range of realistic testing of what an
> 8MB limit could look in the near future. An important part of that
> testing is load testing.
> 
> As of writing the BIP above has no mention of what switchover rules will
> be used for testnet; code floating around has August 1st 2015 as that
> date. I propose we use August 1st 2013.
> 
> This switch over date should be set in the _past_ to allow for the
> creation (via reorg) of a realistic full-load blockchain on testnet to
> fully test the real-world behavior of the entire infrastructure
> ecosystem, including questions like the scalability of block explorers,
> SPV wallets, feasibility of initial syncronization, scalability of the
> UTXO set, etc. While this is of course inconvenient - 2 years of 8MB
> blocks is 840GB worth of data - the Bitcoin ecosystem can-not afford to
> make a change like this blindly.
> 
> I'm sure with a $3.5 billion market cap at stake we can scrape together
> the resources to voluntarily run a few hundred full-load full-nodes for
> testing a change with the potential to destroy that market cap.

Also, as a few people have pointed out to me, the BIP proposal has no
information at all about testing, reproducable or not.

As much of the discussion about the acceptability of this BIP will be
heavily influenced by real world test results we should expect
sufficient information available to understand and reproduce those
tests; the Quality Assurance Test Plan done for BIP16 is a model worth
looking at:

https://github.com/bitcoin/bips/blob/master/bip-0016/qa.mediawiki

-- 
'peter'[:-1]@petertodd.org
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  parent reply	other threads:[~2015-06-23 19:17 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-22 18:18 [bitcoin-dev] Draft BIP : fixed-schedule block size increase Gavin Andresen
2015-06-22 18:33 ` Tier Nolan
2015-06-22 18:46   ` Gavin Andresen
2015-06-22 19:10 ` Martin Schwarz
2015-06-22 19:28   ` Tier Nolan
2015-06-22 19:54     ` Gavin Andresen
2015-06-22 20:12       ` Peter Todd
2015-06-22 19:23 ` Peter Todd
2015-06-23  7:35   ` Ross Nicoll
2015-08-17 15:58     ` Jorge Timón
2015-06-23 19:16   ` Peter Todd [this message]
2015-06-22 20:27 ` Kalle Rosenbaum
2015-06-22 20:46   ` Gavin Andresen
2015-06-22 20:51     ` Gavin Andresen
2015-06-22 21:52 ` Mark Friedenbach
2015-06-23 19:28 ` Peter Todd
2015-06-23 20:12   ` Gavin Andresen
2015-06-23 20:26     ` Pieter Wuille
2015-06-23 20:50       ` Peter Todd
2015-06-24  6:14         ` grarpamp
2015-06-23 20:46     ` Peter Todd
2015-06-23 21:24       ` Gavin Andresen
2015-06-26 19:08         ` Peter Todd
2015-06-26 22:01           ` Ivan Brightly
2015-06-26 19:25         ` Peter Todd
2015-06-26 22:16           ` Simon Liu
2015-06-27  2:14             ` Milly Bitcoin
2015-06-23 20:55     ` Roy Badami
2015-06-24  1:43 ` odinn
2015-06-24  3:05   ` William Madden
2015-06-24  3:49     ` Jeff Garzik
2015-06-24 13:06       ` Will
2015-06-24 13:44         ` Gavin Andresen
2015-06-25  0:32           ` Pindar Wong
2015-06-25 13:50       ` Gareth Williams
2015-06-25 14:07         ` Adam Back
2015-06-26 13:47           ` Tier Nolan
2015-06-26 15:13             ` Will
2015-06-26 17:39               ` Gavin Andresen
2015-06-26 19:07                 ` Will
2015-07-01 22:49             ` odinn
2015-08-17 13:15               ` Tier Nolan
2015-08-17 13:18                 ` Clément Elbaz
2015-08-19  3:45                 ` odinn
2015-08-17 16:11             ` Jorge Timón
2015-06-26 21:07 ` Carsten Otto
2015-06-22 19:32 Jean-Paul Kogelman
2015-06-22 20:43 ` Tier Nolan
2015-06-22 20:54 ` Peter Todd
2015-06-22 21:04   ` Stephen Morse
2015-06-22 21:32     ` Ross Nicoll
2015-08-17 15:54       ` Jorge Timón
2015-06-22 21:21   ` Gavin Andresen
2015-06-22 21:39     ` Patrick Strateman
2015-06-22 21:48     ` Tier Nolan
2015-06-23  7:59 Ross Nicoll
2015-06-24  4:31 Raystonn
2015-06-24 17:05 ` Mark Friedenbach
2015-06-24 17:24   ` Roy Badami
2015-06-24 17:23 Raystonn
2015-06-24 17:24 ` Allen Piscitello
2015-06-24 17:28 ` Roy Badami

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