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From: Patrick Strateman <patrick.strateman@gmail•com>
To: bitcoin-dev@lists•linuxfoundation.org
Subject: Re: [bitcoin-dev] Draft BIP : fixed-schedule block size increase
Date: Mon, 22 Jun 2015 14:39:07 -0700	[thread overview]
Message-ID: <5588807B.7030400@gmail.com> (raw)
In-Reply-To: <CABsx9T2FxNEEUx7_ZRf2NpQk1fdqMKtfzccX-duBjOn-ksS0cg@mail.gmail.com>

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If you truly have a consensus then the rational behavior is to
permanently change the nodes behavior after the trigger.

On 06/22/2015 02:21 PM, Gavin Andresen wrote:
> On Mon, Jun 22, 2015 at 4:54 PM, Peter Todd <pete@petertodd•org
> <mailto:pete@petertodd•org>> wrote:
>
>     > Since it's possible that block timestamps aren't chronological
>     in order, what would happen if a block following a size increase
>     trigger is back in the past before the size increase? Would that
>     block have a lower size restriction again? Would using block
>     height not be a more stable number to work with?
>
>     In the nVersion bits proposal that I co-authored we solved that
>     issue by
>     comparing the timestamp against the median time, which is
>     guaranteed by
>     the protocol rules to monotonically advance.
>
>
> That complicates the implementation quite a bit.
>
> I mostly implemented a variant that replaced the MAX_BLOCK_SIZE
> constant with a function that took both a timestamp and a block
> height, and there are several places in the current reference
> implementation where digging out the block height (or, worse,
> calculating the median timestamp for the block) would involve changing
> quite a few functions in the call-chain or acquiring the cs_main lock
> to consult the current best chain.
>
> -- 
> --
> Gavin Andresen
>
>
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev@lists•linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev


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  reply	other threads:[~2015-06-22 21:39 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
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 [this message]
2015-06-22 21:48     ` Tier Nolan
  -- strict thread matches above, loose matches on Subject: below --
2015-06-24 17:23 Raystonn
2015-06-24 17:24 ` Allen Piscitello
2015-06-24 17:28 ` Roy Badami
2015-06-24  4:31 Raystonn
2015-06-24 17:05 ` Mark Friedenbach
2015-06-24 17:24   ` Roy Badami
2015-06-23  7:59 Ross Nicoll
2015-06-22 18:18 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
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

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