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From: Jeff Garzik <jgarzik@bitpay.com>
Date: Wed, 26 Feb 2014 17:51:32 -0500
Message-ID: <CAJHLa0PhQqgPLRFG8h2-Xo0t-ooBAVgOwJ_w3Y0nxRZ5jfmzZA@mail.gmail.com>
To: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Content-Type: text/plain; charset=ISO-8859-1
Subject: Re: [Bitcoin-development] Fee drop
Precedence: list

Just pushed out a mempool janitor change to
https://github.com/bitcoin/bitcoin/pull/3753   The goal was to create
a simple bolt-on change, and /not/ rewrite the mempool code.

I'll be running some metrics on what does and does not get into the
mempools of my public nodes for 48 hours, ending Friday ~midnight EST.

On Mon, Feb 24, 2014 at 11:41 PM, Peter Todd <pete@petertodd.org> wrote:
> So, just to be clear, we're adding, say, a memory limited mempool or
> something prior to release so this fee drop doesn't open up an obvious
> low-risk DDoS exploit.... right? As we all know, the network bandwidth
> DoS attack mitigation strategy relies on transactions we accept to
> mempools getting mined, and the clearance rate of the new low-fee
> transactions is going to be pretty small; we've already had problems in
> the past with mempool growth in periods of high demand. Equally it
> should be obvious to people how you can create large groups of low-fee
> transactions, and then cheaply double-spend them with higher fee
> transactions to suck up network bandwidth - just like I raised for the
> equally foolish double-spend propagation pull-req.
>
> Of course, there's also the problem that we're basically lying to people
> about whether or not Bitcoin is a good medium for microtransactions.
> It's not. Saying otherwise by releasing software that has known and
> obvious DoS attack vulnerabilities that didn't exist in the previous
> version is irresponsible on multiple levels.
>
> --
> 'peter'[:-1]@petertodd.org
> 0000000000000000b28e2818c4d8019fb71e33ec2d223f5e09394a89caccf4e2
>
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-- 
Jeff Garzik
Bitcoin core developer and open source evangelist
BitPay, Inc.      https://bitpay.com/