From: "Emin Gün Sirer" <el33th4x0r@gmail•com>
To: Gregory Maxwell <gmaxwell@gmail•com>
Cc: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] Squashing redundant tx data in blocks on the wire
Date: Fri, 18 Jul 2014 23:06:21 -0400 [thread overview]
Message-ID: <CAPkFh0thLcaAPaa7Xswu2vSxossRDziMCoStzTDWw+e0c3WqTw@mail.gmail.com> (raw)
In-Reply-To: <CAAS2fgSfpTmNcexSV6U3wvbdddqZ8Pb0WVYh35jqNkJCMRbBkw@mail.gmail.com>
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> Most things I've seen working in this space are attempting to minimize
> the data transfered. At least for the miner-interested case the round
> complexity is much more important because a single RTT is enough to
> basically send the whole block on a lot of very relevant paths.
Agreed. Yaron's scheme is magical because it is non-interactive. I send you
a packet of O(expected-delta) and you immediately figure out the delta
without further back and forth communication, each requiring an RTT.
> I know much better is possible (see up-thread where I linked to an old
> proposal to use forward error correction to transfer with low data
> transfer (but not optimal) and negligible probability of needing a
> round-trip, with a tradeoff for more overhead for lower roundtrip
> probability).
FEC schemes are both fairly complex, because the set is constantly
changing, and (if i understand your suggestion correctly) they add
additional metadata overhead (albeit mostly during tx propagation). Set
reconciliation is near optimal.
In any case, I have no horse here (I think changing the client so it's
multithreaded is the best way to go), but Yaron's work is pretty cool and
may be applicable.
- egs
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next prev parent reply other threads:[~2014-07-19 3:06 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-17 21:35 Kaz Wesley
2014-07-17 22:46 ` Gavin Andresen
2014-07-17 23:26 ` Kaz Wesley
2014-07-18 13:53 ` Jeff Garzik
2014-07-18 14:53 ` Gavin Andresen
2014-07-18 15:06 ` Jeff Garzik
2014-07-18 17:39 ` Kaz Wesley
2014-07-18 17:48 ` Jeff Garzik
2014-07-18 17:53 ` Kaz Wesley
2014-07-18 19:51 ` Kaz Wesley
2014-07-18 19:55 ` Jeff Garzik
2014-07-19 0:54 ` Emin Gün Sirer
2014-07-19 1:25 ` Gregory Maxwell
2014-07-19 3:06 ` Emin Gün Sirer [this message]
2014-07-19 6:48 ` Gregory Maxwell
2014-07-19 8:06 ` Wladimir
2014-07-17 23:34 ` Gregory Maxwell
[not found] ` <CABsx9T2PSa3MpfMMDCb8ACVF5vDOZOFLEK9zfP9PakgHA4U16w@mail.gmail.com>
[not found] ` <CAPkFh0vKFnKRE-sd-Z9t1zB73VLPsiaQ3o=OYgBqqtUE4_rTaw@mail.gmail.com>
2014-07-31 20:47 ` Kaz Wesley
2014-07-31 21:29 ` Gregory Maxwell
2014-07-31 21:41 ` Kaz Wesley
2014-07-31 21:51 ` Gregory Maxwell
2014-07-31 22:27 ` Kaz Wesley
2014-07-31 23:18 ` Gregory Maxwell
2014-08-01 1:00 ` Kaz Wesley
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