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author | jl2012 <jl2012@xbt.hk> | 2015-08-27 23:02:47 -0400 |
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committer | bitcoindev <bitcoindev@gnusha.org> | 2015-08-28 03:02:49 +0000 |
commit | b22ce93a26ade09b171268940de8a349cbc4edfc (patch) | |
tree | 26a37ef64e7961bb208e6c532bb30f431a542ee2 | |
parent | 53817b578f2388c7cdc680f0a97da36f3b24f779 (diff) | |
download | pi-bitcoindev-b22ce93a26ade09b171268940de8a349cbc4edfc.tar.gz pi-bitcoindev-b22ce93a26ade09b171268940de8a349cbc4edfc.zip |
Re: [bitcoin-dev] Questiosn about BIP100
-rw-r--r-- | 81/f572008fff5f446e4dc65f1cb764803ffa5bdb | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/81/f572008fff5f446e4dc65f1cb764803ffa5bdb b/81/f572008fff5f446e4dc65f1cb764803ffa5bdb new file mode 100644 index 000000000..6ea010083 --- /dev/null +++ b/81/f572008fff5f446e4dc65f1cb764803ffa5bdb @@ -0,0 +1,132 @@ +Return-Path: <jl2012@xbt.hk> +Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org + [172.17.192.35]) + by mail.linuxfoundation.org (Postfix) with ESMTPS id 960BAEE5 + for <bitcoin-dev@lists.linuxfoundation.org>; + Fri, 28 Aug 2015 03:02:49 +0000 (UTC) +X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 +Received: from s47.web-hosting.com (s47.web-hosting.com [199.188.200.16]) + by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 098D7A7 + for <bitcoin-dev@lists.linuxfoundation.org>; + Fri, 28 Aug 2015 03:02:48 +0000 (UTC) +Received: from localhost ([::1]:36488 helo=server47.web-hosting.com) + by server47.web-hosting.com with esmtpa (Exim 4.85) + (envelope-from <jl2012@xbt.hk>) + id 1ZV9wF-00494s-AF; Thu, 27 Aug 2015 23:02:47 -0400 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8; + format=flowed +Content-Transfer-Encoding: 8bit +Date: Thu, 27 Aug 2015 23:02:47 -0400 +From: jl2012@xbt.hk +To: Jeff Garzik <jgarzik@gmail.com> +In-Reply-To: <CADm_WcYXEu2dWCBWJwzSJnp6A4iFsR1eBXrQinQmd_NRXAs9Vw@mail.gmail.com> +References: <CADToNK93kmXjwSAxj3WcPSYgq2uReVNJSpX1a5M7DMzgjgv5vA@mail.gmail.com> + <CADm_WcbEhMNWKCY6CqsSTRQztTz3Ap8PMkO+csz+jptc9Nbazg@mail.gmail.com> + <CADToNK972BgCXtZScciF_F+Db_AYWP=obXSqUS7DozY-rAmT7g@mail.gmail.com> + <CADm_WcYXEu2dWCBWJwzSJnp6A4iFsR1eBXrQinQmd_NRXAs9Vw@mail.gmail.com> +Message-ID: <038c418c354b4b4559137652282e88b4@xbt.hk> +X-Sender: jl2012@xbt.hk +User-Agent: Roundcube Webmail/1.0.5 +X-AntiAbuse: This header was added to track abuse, + please include it with any abuse report +X-AntiAbuse: Primary Hostname - server47.web-hosting.com +X-AntiAbuse: Original Domain - lists.linuxfoundation.org +X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] +X-AntiAbuse: Sender Address Domain - xbt.hk +X-Get-Message-Sender-Via: server47.web-hosting.com: authenticated_id: + jl2012@xbt.hk +X-Source: +X-Source-Args: +X-Source-Dir: +X-From-Rewrite: unmodified, already matched +X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW + autolearn=ham version=3.3.1 +X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on + smtp1.linux-foundation.org +Cc: Bitcoin development mailing list <bitcoin-dev@lists.linuxfoundation.org> +Subject: Re: [bitcoin-dev] Questiosn about BIP100 +X-BeenThere: bitcoin-dev@lists.linuxfoundation.org +X-Mailman-Version: 2.1.12 +Precedence: list +List-Id: Bitcoin Development Discussion <bitcoin-dev.lists.linuxfoundation.org> +List-Unsubscribe: <https://lists.linuxfoundation.org/mailman/options/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=unsubscribe> +List-Archive: <http://lists.linuxfoundation.org/pipermail/bitcoin-dev/> +List-Post: <mailto:bitcoin-dev@lists.linuxfoundation.org> +List-Help: <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=help> +List-Subscribe: <https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=subscribe> +X-List-Received-Date: Fri, 28 Aug 2015 03:02:49 -0000 + +Mode could be ruled out immediately. Just consider this: 34% 8MB, 33% +1.5MB, 33% 1.2MB + +I personally believe the median is the most natural and logical choice. +51% of miners can always force the 49% to follow the simple majority +choice through a 51% attack. Using median will eliminate the incentive +to 51% attack due to this reason. The incentive to 51% attack will exist +when you use any value other than 50-percentile. The further it is from +50, the bigger the incentive. + +Having said that, I don't think it is an absolutely bad idea to use a +value other than 50-percentile. The exact value is debatable. + +However, if you use something other than median, you should make it +symmetrical. For example, the block size will increase if the +20-percentile is bigger than the current limit, and the block size will +decrease if the 80-percentile is smaller than the current limit. + + + + +Jeff Garzik via bitcoin-dev 於 2015-08-27 16:49 寫到: +> 20th percentile, though there is some argument to take the 'mode' of +> several tranches +> +> On Thu, Aug 27, 2015 at 11:07 AM, Andrew C <achow101@gmail.com> wrote: +> +>> I have been reading the pdf and one thing I can't figure out is what +>> you mean by "most common floor". Is that the smallest block size +>> that has a vote or the block size with the most votes or something +>> else? +>> +>> On Mon, Aug 24, 2015 at 10:40 AM Jeff Garzik <jgarzik@gmail.com> +>> wrote: +>> +>> Great questions. +>> +>> - Currently working on technical BIP draft and implementation, +>> hopefully for ScalingBitcoin.org. Only the PDF is publicly +>> available as of today. +>> - Yes, the initial deployment is in the same manner as size votes. +>> +>> On Fri, Aug 21, 2015 at 7:38 PM, Andrew C via bitcoin-dev +>> <bitcoin-dev@lists.linuxfoundation.org> wrote: +>> +>> Hi all, +>> +>> Is there any client or code that currently implements BIP 100? And +>> how will it be deployed? WIll the initial fork be deployed in the +>> same manner that the max block size changes are deployed described +>> in the bip? +>> +>> Thanks +>> +>> _______________________________________________ +>> bitcoin-dev mailing list +>> bitcoin-dev@lists.linuxfoundation.org +>> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev [1] +> +> +> +> Links: +> ------ +> [1] https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev +> +> _______________________________________________ +> bitcoin-dev mailing list +> bitcoin-dev@lists.linuxfoundation.org +> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev + + |