From: Gregory Maxwell <gmaxwell@gmail•com>
To: Pieter Wuille <pieter.wuille@gmail•com>
Cc: bitcoin-development@lists•sourceforge.net
Subject: Re: [Bitcoin-development] Pruning in the reference client: ultraprune mode
Date: Fri, 6 Jul 2012 13:19:59 -0400 [thread overview]
Message-ID: <CAAS2fgTME9sNC6O0UnTGvNSN3ruC8P6YNVKZY-TZTVWoQi0yzA@mail.gmail.com> (raw)
In-Reply-To: <20120706165204.GA27215@vps7135.xlshosting.net>
Pieter's performance numbers are a bit conservative if anything—
profiles on ultraprune[1] show that the reference client's wasting of
a lot of time in redundant serialization and hashing operations is
the major time sink. Once thats cleared up it should be quite a
bit faster
[1] https://people.xiph.org/~greg/ultraprune_profile.png
On Fri, Jul 6, 2012 at 12:52 PM, Pieter Wuille <pieter.wuille@gmail•com> wrote:
> Also note that this is not directly related to the recent pruning
> proposals that use an alt chain with an index of unspent coins (and
> addresses), merged mined with the main chain. This could be a step
> towards such a system, however.
In particular, if the BDB indexing in ultraprune is replaced with
a hash committed tree structure who's root is committed in the
blockchain you then have a txout commitment scheme.
Ultraprune is most of the messy structural work for that. The
rest is mostly storage differences.
prev parent reply other threads:[~2012-07-06 17:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-06 16:52 Pieter Wuille
2012-07-06 17:19 ` Gregory Maxwell [this message]
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