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From: Karl-Johan Alm <karljohan-alm@garage.co.jp>
Date: Tue, 5 Jun 2018 13:33:06 +0900
Message-ID: <CALJw2w5FY3EoqtA4HTJr8CCwZ-Dyf=XVbO8Hd=TDjxBEgwLULQ@mail.gmail.com>
To: Jim Posen <jim.posen@gmail.com>
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Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] BIP 158 Flexibility and Filter Size
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On Tue, Jun 5, 2018 at 10:08 AM, Jim Posen <jim.posen@gmail.com> wrote:
> It also derives all bandwidth gains from address reuse. So I'm
> hesitant to make the complexity tradeoff for bandwidth savings due to a
> behavior that is actively discouraged.
I don't understand this comment. The bandwidth gains are not from
address reuse, they are from the observed property that false
positives are independent between two filters. I.e. clients that
connect once a day will probably download 2-3 filters at most, if they
had nothing relevant in the last ~144 blocks.
-Kalle.
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