1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192]
helo=mx.sourceforge.net)
by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76)
(envelope-from <pete@petertodd.org>) id 1Yy1wf-0007Ks-KU
for bitcoin-development@lists.sourceforge.net;
Thu, 28 May 2015 17:50:17 +0000
Received-SPF: pass (sog-mx-2.v43.ch3.sourceforge.com: domain of petertodd.org
designates 62.13.149.78 as permitted sender)
client-ip=62.13.149.78; envelope-from=pete@petertodd.org;
helo=outmail149078.authsmtp.net;
Received: from outmail149078.authsmtp.net ([62.13.149.78])
by sog-mx-2.v43.ch3.sourceforge.com with esmtp (Exim 4.76)
id 1Yy1we-00036z-Eg for bitcoin-development@lists.sourceforge.net;
Thu, 28 May 2015 17:50:17 +0000
Received: from mail-c235.authsmtp.com (mail-c235.authsmtp.com [62.13.128.235])
by punt17.authsmtp.com (8.14.2/8.14.2/) with ESMTP id t4SHo7W8002673;
Thu, 28 May 2015 18:50:07 +0100 (BST)
Received: from muck (76-10-178-110.dsl.teksavvy.com [76.10.178.110])
(authenticated bits=128)
by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id t4SHo0Xt065182
(version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO);
Thu, 28 May 2015 18:50:04 +0100 (BST)
Date: Thu, 28 May 2015 13:50:00 -0400
From: Peter Todd <pete@petertodd.org>
To: Gavin Andresen <gavinandresen@gmail.com>
Message-ID: <20150528175000.GA11913@muck>
References: <16096345.A1MpJQQkRW@crushinator>
<CABsx9T3-zxCAagAS0megd06xvG5n-3tUL9NUK9TT3vt7XNL9Tg@mail.gmail.com>
<CANEZrP3VCaFsW4+gPm2kCJ9z7oVUZYVaeNf=_cJWEWwh4ZxiPQ@mail.gmail.com>
<CABsx9T21zjHyO-nh1aSBM3z4Bg015O0rOfYq7=Sy4mf=QxUVQA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;
protocol="application/pgp-signature"; boundary="0OAP2g/MAC+5xKAE"
Content-Disposition: inline
In-Reply-To: <CABsx9T21zjHyO-nh1aSBM3z4Bg015O0rOfYq7=Sy4mf=QxUVQA@mail.gmail.com>
X-Server-Quench: f963d12e-0561-11e5-b396-002590a15da7
X-AuthReport-Spam: If SPAM / abuse - report it at:
http://www.authsmtp.com/abuse
X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR
aQdMdAoUFVQNAgsB AmMbWlxeVV17WWY7 bAxPbAVDY01GQQRr
UFdMSlVNFUssBX95 WR52Fhl0cgROejBx Z0JmVj4NVUJ5IUd/
F1NUEGsHeGZhPWUC AkNRcR5UcAFPdx8U a1UrBXRDAzANdhES
HhM4ODE3eDlSNilR RRkIIFQOdA4zBDkk QAsPEX0mGVEIXSM6
Mx04J0VUAEFZLkU/ eQF5fHhQKAMfEm8W EVxLCzNYIF9p
X-Authentic-SMTP: 61633532353630.1023:706
X-AuthFastPath: 0 (Was 255)
X-AuthSMTP-Origin: 76.10.178.110/587
X-AuthVirus-Status: No virus detected - but ensure you scan with your own
anti-virus system.
X-Spam-Score: -1.5 (-)
X-Spam-Report: Spam Filtering performed by mx.sourceforge.net.
See http://spamassassin.org/tag/ for more details.
-1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for
sender-domain
-0.0 SPF_PASS SPF: sender matches SPF record
X-Headers-End: 1Yy1we-00036z-Eg
Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Proposed alternatives to the 20MB step
function
X-BeenThere: bitcoin-development@lists.sourceforge.net
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: <bitcoin-development.lists.sourceforge.net>
List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>,
<mailto:bitcoin-development-request@lists.sourceforge.net?subject=unsubscribe>
List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum_name=bitcoin-development>
List-Post: <mailto:bitcoin-development@lists.sourceforge.net>
List-Help: <mailto:bitcoin-development-request@lists.sourceforge.net?subject=help>
List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>,
<mailto:bitcoin-development-request@lists.sourceforge.net?subject=subscribe>
X-List-Received-Date: Thu, 28 May 2015 17:50:17 -0000
--0OAP2g/MAC+5xKAE
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
On Thu, May 28, 2015 at 01:19:44PM -0400, Gavin Andresen wrote:
> As for whether there "should" be fee pressure now or not: I have no
> opinion, besides "we should make block propagation faster so there is no
> technical reason for miners to produce tiny blocks." I don't think us
> developers should be deciding things like whether or not fees are too hig=
h,
> too low, .....
Note that the majority of hashing power is using Matt Corallo's block
relay network, something I confirmed the other day through my mining
contacts. Interestingly, the miners that aren't using it include some of
the largest pools; I haven't yet gotten an answer as to what their
rational for not using it was exactly.
Importantly, this does mean that block propagation is probably fairly
close to optimal already, modulo major changes to the consensus
protocol; IBLT won't improve the situation much, if any.
It's also notable that we're already having issues with miners turning
validation off as a way to lower their latency; I've been asked myself
about the possibility of creating an "SPV miner" that skips validation
while new blocks are propagating to shave off time and builds directly
off of block headers corresponding to blocks with unknown contents.
--=20
'peter'[:-1]@petertodd.org
00000000000000000327487b689490b73f9d336b3008f82114fd3ada336bcac0
--0OAP2g/MAC+5xKAE
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: Digital signature
-----BEGIN PGP SIGNATURE-----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==
=3MpU
-----END PGP SIGNATURE-----
--0OAP2g/MAC+5xKAE--
|
