From: Tom Zander <tomz@freedommail•ch>
To: bitcoin-dev@lists•linuxfoundation.org
Subject: Re: [bitcoin-dev] Small Nodes: A Better Alternative to Pruned Nodes
Date: Thu, 20 Apr 2017 11:46:33 +0200 [thread overview]
Message-ID: <2652067.QRUcnb74ny@strawberry> (raw)
In-Reply-To: <CAFVRnyrQ3CMPW0=dtR-xnW1bF8cD9o5yvD67w25=w9wxVyJT9w@mail.gmail.com>
On Wednesday, 19 April 2017 19:30:30 CEST David Vorick via bitcoin-dev
wrote:
> > I suggested something similar which is a much simpler version;
> > https://zander.github.io/scaling/Pruning/
> Your proposal has a significant disadvantage: If every peer is dropping
> 75% of all blocks randomly, then you need to connect to a large number of
> peers to download the whole blockchain.
...
> If you are downloading 450,000 blocks, you will need to
> connect to an expected 46 peers to download the whole blockchain.
I don’t really see the problem here, even if your math is a off. (Statistics
is difficult, I know). Connecting to many nodes to download faster is really
not an issue and already happens.
> Your proposal is also a lot less able to handle active adversaries: if
> nodes are randomly dropping blocks, the probability that one block in
> particular is dropped by everyone goes up significantly.
You make the assumption that this new mode of pruning will be used by 100%
of the network, this is not how distributed systems work.
--
Tom Zander
Blog: https://zander.github.io
Vlog: https://vimeo.com/channels/tomscryptochannel
next prev parent reply other threads:[~2017-04-20 9:46 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-17 6:54 David Vorick
2017-04-17 7:11 ` Danny Thorpe
2017-04-17 7:27 ` David Vorick
2017-04-20 15:50 ` Erik Aronesty
2017-04-20 23:42 ` Aymeric Vitte
2017-04-21 13:35 ` David Kaufman
2017-04-21 15:58 ` Leandro Coutinho
2017-04-17 10:14 ` Aymeric Vitte
2017-04-19 17:30 ` David Vorick
2017-04-20 9:46 ` Tom Zander [this message]
2017-04-20 20:32 ` Andrew Poelstra
2017-04-21 8:27 ` Tom Zander
2017-04-20 11:27 ` Aymeric Vitte
2017-04-18 7:43 ` Jonas Schnelli
2017-04-18 10:50 ` Tom Zander
2017-04-18 13:07 ` Tier Nolan
2017-04-18 23:19 ` Aymeric Vitte
2017-04-19 4:28 ` udevNull
2017-04-19 13:47 ` Angel Leon
2017-04-21 20:38 ` Gregory Maxwell
2017-04-23 16:27 ` Aymeric Vitte
2017-05-03 14:03 ` Erik Aronesty
2017-05-03 19:10 ` Natanael
2017-05-03 22:45 ` Aymeric Vitte
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