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Sunday, April 30, 2017

Bitcoin Unlimited Nodes Crash Due to Memory Leaks

Bitcoin Unlimited Nodes Crash Due to Memory Leaks

Almost 600 Bitcoin Unlimited (BU) nodes came down crashing yesterday, falling from around 720 to 180. They have now slightly recovered to 458, with mining nodes apparently unaffected as BU’s hashrate share continues to be at around 41%. Andrew Clifford, President of the Bitcoin Unlimited foundation, publicly stated:

"Unfortunately, running with full blocks and a massively bloated mempool is the hardest conditions for efficient block propagation while allowing flexibility for larger blocks. A point release is being prepared for this. In the meantime please try a size like maxmempool=20 in bitcoin.conf."

A BU node operator publicly reported yesterday he was having problems due to what appeared to be a memory leak. Shortly afterwards, some 400 nodes came down crashing around the same time. Suggesting the network was attacked by exploiting the bug.

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