URGENT ALL MINERS: The network is under attack. The attack is a computational DDoS, ie. miners and nodes need to spend a lot of time processing some blocks. This is due to the EXTCODESIZE opcode, which has a fairly low gas price but requires nodes to read disk state information; attack transactions are calling this opcode approximately 50,000 times per block. The consequence of this is that the network is slowing down a lot, but there is NO consensus failure or memory overload. We have currently identified several paths for a more sustainable mid-term solution and have developers working on implementation.
It is strongly recommended to switch to parity mining. Use this configuration:
–cache-size-db 1024 –target-floor-gas 1000000 –gasprice 50000000000
Parity Mining Guidelines:
https://docs.google.com/document/d/1j3v8bKjXQcMNNdx5Juwo3PRRCcHy8XcA6R9-0W7NCso/edit
https://github.com/ethcore/parity/wiki/Mining
If you continue to use geth, use the following configuration:
–cache 1024 –targetgaslimit 1000000 –gasprice 50000000000
