📅 Original date posted:2016-12-10
📝 Original message:On Sat, Dec 10, 2016 at 4:23 AM, Daniele Pinna via bitcoin-dev <
bitcoin-dev at lists.linuxfoundation.org> wrote:
> We have models for estimating the probability that a block is orphaned
> given average network bandwidth and block size.
>
> The question is, do we have objective measures of these two quantities?
> Couldn't we target an orphan_rate < max_rate?
>
Models can predict orphan rate given block size and network/hashrate
topology, but you can't control the topology (and things like FIBRE hide
the effect of block size on this as well). The result is that if you're
purely optimizing for minimal orphan rate, you can end up with a single
(conglomerate of) pools producing all the blocks. Such a setup has no
propagation delay at all, and as a result can always achieve 0 orphans.
Cheers,
--
Pieter
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Pieter Wuille [ARCHIVE] /
npub1tj…jtl6r
2023-06-07 17:54:54
in reply to nevent1q…d3a8
Author Public Key
npub1tjephawh7fdf6358jufuh5eyxwauzrjqa7qn50pglee4tayc2ntqcjtl6rPublished at
2023-06-07 17:54:54Event JSON
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"content": "📅 Original date posted:2016-12-10\n📝 Original message:On Sat, Dec 10, 2016 at 4:23 AM, Daniele Pinna via bitcoin-dev \u003c\nbitcoin-dev at lists.linuxfoundation.org\u003e wrote:\n\n\u003e We have models for estimating the probability that a block is orphaned\n\u003e given average network bandwidth and block size.\n\u003e\n\u003e The question is, do we have objective measures of these two quantities?\n\u003e Couldn't we target an orphan_rate \u003c max_rate?\n\u003e\n\nModels can predict orphan rate given block size and network/hashrate\ntopology, but you can't control the topology (and things like FIBRE hide\nthe effect of block size on this as well). The result is that if you're\npurely optimizing for minimal orphan rate, you can end up with a single\n(conglomerate of) pools producing all the blocks. Such a setup has no\npropagation delay at all, and as a result can always achieve 0 orphans.\n\nCheers,\n\n-- \nPieter\n-------------- next part --------------\nAn HTML attachment was scrubbed...\nURL: \u003chttp://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20161210/edca6d6b/attachment.html\u003e",
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