public inbox for bitcoindev@googlegroups.com
 help / color / mirror / Atom feed
From: Mike Hearn <mike@plan99•net>
To: Jim Phillips <jim@ergophobia•org>
Cc: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] A suggestion for reducing the size of the UTXO database
Date: Mon, 25 May 2015 20:44:18 +0200	[thread overview]
Message-ID: <CANEZrP0DL8yA=neK0DTq0npEqc0q+RvTQD57OndNVg0vi2=yMg@mail.gmail.com> (raw)
In-Reply-To: <CANe1mWzBy8-C+CWfwaOLxJ2wokjy8ytQUh2TkRY_Ummn1BpPzw@mail.gmail.com>

[-- Attachment #1: Type: text/plain, Size: 1165 bytes --]

Wallets are incentivised to do a better job with defragmentation already,
as if you have lots of tiny UTXOs then your fees end up being huge when
trying to make a payment.

The reason they largely don't is just one of manpower. Nobody is working on
it.

As a wallet developer myself, one way I'd like to see this issue be fixed
by making free transactions more reliable. Then wallets can submit free
transactions to the network to consolidate UTXOs together, e.g. at night
when the user is sleeping. They would then fit into whatever space is
available in the block during periods of low demand, like on Sunday.

If we don't do this then wallets won't automatically defragment, as we'd be
unable to explain to the user why their money is slowly leaking out of
their wallet without them doing anything. Trying to explain the existing
transaction fees is hard enough already ("I thought bitcoin doesn't have
banks" etc).

There is another way:  as the fee is based on a rounded 1kb calculation, if
you go into the next fee band adding some more outputs and making a bigger
change output becomes "free" for another output or two. But wallets don't
exploit this today.

[-- Attachment #2: Type: text/html, Size: 1483 bytes --]

  parent reply	other threads:[~2015-05-25 18:44 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-09 17:09 Jim Phillips
2015-05-09 18:45 ` Peter Todd
2015-05-09 19:02   ` Jim Phillips
2015-05-09 19:00 ` Andreas Schildbach
2015-05-09 19:05   ` Jim Phillips
2015-05-09 19:06   ` Pieter Wuille
2015-05-09 19:16     ` Jim Phillips
2015-05-09 19:43       ` Ross Nicoll
     [not found] ` <3862E01F-FD0F-48F5-A6D9-F8E0FB0AB68F@newcastle.ac.uk>
     [not found]   ` <CANe1mWys1gAO1CgPEpD7rdtXF2KYfvXA6bc0q-rAzg9xOFc-5A@mail.gmail.com>
     [not found]     ` <8029969D-FD22-43F7-930D-CEC7A87CEAD5@newcastle.ac.uk>
2015-05-09 19:28       ` Jim Phillips
2015-05-10  2:11 ` Matt Whitlock
2015-05-10 12:11   ` Jim Phillips
2015-05-25 18:41   ` Mike Hearn
2015-05-25 20:03     ` Matt Whitlock
2015-05-25 20:29       ` Andreas Schildbach
2015-05-25 21:05         ` Peter Todd
2015-05-26 12:40           ` Andreas Schildbach
2015-05-25 21:14         ` Warren Togami Jr.
2015-05-25 21:12       ` Mike Hearn
2015-05-10 13:35 ` Bob McElrath
2015-05-10 14:33   ` Jeff Garzik
2015-05-10 14:42     ` Bob McElrath
2015-05-12 19:50 ` Danny Thorpe
2015-05-25 18:44 ` Mike Hearn [this message]
2015-05-25 21:26   ` Peter Todd
2015-05-25 22:03     ` Mike Hearn
2015-05-26  0:10       ` [Bitcoin-development] Cost savings by using replace-by-fee, 30-90% Peter Todd
2015-05-26 18:22         ` Danny Thorpe
2015-05-26 18:38           ` Allen Piscitello
2015-05-26 18:42           ` Aaron Voisine
2015-05-26 18:47           ` Adam Back
2015-05-26 20:18           ` Matt Whitlock
2015-05-26 20:30         ` joliver
2015-05-26 20:56           ` Mark Friedenbach
2015-05-26 21:29           ` s7r
2015-05-26 22:06             ` Adam Back
2015-05-27  1:25             ` Peter Todd
2015-05-27 19:28               ` s7r
2015-05-26 22:29           ` Jeff Garzik
2015-05-09 19:25 [Bitcoin-development] A suggestion for reducing the size of the UTXO database Raystonn
2015-05-09 19:33 ` Jim Phillips
2015-05-09 19:43 Raystonn
2015-05-09 19:52 ` Jim Phillips
2015-05-09 20:20 Raystonn
2015-05-09 20:38 ` Pieter Wuille
2015-05-09 21:11   ` Jim Phillips

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CANEZrP0DL8yA=neK0DTq0npEqc0q+RvTQD57OndNVg0vi2=yMg@mail.gmail.com' \
    --to=mike@plan99$(echo .)net \
    --cc=bitcoin-development@lists$(echo .)sourceforge.net \
    --cc=jim@ergophobia$(echo .)org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox