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Date: Tue, 12 Mar 2013 05:57:49 -0400
From: Peter Todd <pete@petertodd.org>
To: Mike Hearn <mike@plan99.net>
Message-ID: <20130312095749.GB8130@savin>
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Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>,
	bitcoin-security@lists.sourceforge.net
Subject: Re: [Bitcoin-development] Warning: many 0.7 nodes break on large
 number of tx/block; fork risk
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On Tue, Mar 12, 2013 at 10:10:15AM +0100, Mike Hearn wrote:
> There are no bounds on the memory pool size. If too many transactions
> enter the pool then nodes will start to die with OOM failures.
> Therefore it is possible that we have a very limited amount of time
> until nodes start dying en-masse.

Note that nodes dying en-mass due to OOM failures is a relatively benign
failure mode as the point as which any particular node would die is
uncorrelated with other nodes - it won't cause a network fork.

Implementing a simple and stupid "while [ true ] do ; ./bitcoind ; done"
loop combined with ulimit to keep total memory usage to something sane
is a perfectly acceptable hack until proper mempool code with expiration
can be written. Gavin can talk more about his ideas in that regard.

--=20
'peter'[:-1]@petertodd.org

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