The state cleaning was announced by Vitalik Buterin in the tweet State clearing 100% complete dated 23:07 Nov 29 2016.This time corresponds to block 2,718,436.The Clearing Contract can be found at 0xe9c9068240d8450da314f60804debfc194b72309.There was over 10,000 transactions involved in clearing the state.The first transaction to Sweeper.sol was at block 2,675,055 in transaction 0x884d0fc7....The last transaction to Sweeper.sol was at block 2,700,301 in transaction 0x6b651cfd....The Sweeper.sol Contract can be found at 0xa43ebd8939d8328f5858119a3fb65f65c864c6dd.There was 35370 transactions involved in clearing the state.The first state clearing transaction was at block 2,675,055 in transaction 0x884d0fc7....The last state clearing transaction was at block 2,717,576 in transaction 0xbf78cc00....You can see that the daily gasUsed chart below shows the increase in gasUsed during the state clearing period: One of the state clearing operations in block 2,686,351 triggered a consensus bug in geth causing a network fork in the blockchain.

This was caused because the behaviour in one of the state clearing operations produced a different state compared to Parity.Some further information in the post A state clearing FAQ.Your blockchain is currently syncing with the block data containing the recent low gas price network attacks where the following transaction types occurred within blocks: Note that from #2,675,000 when the 4th hard fork occurred, the syncing slows down as the node clients are clearing out the empty accounts created by the account bloat transactions.From Is there a new DOS attack?I'm running geth 1.5.2 and after starting it his morning I'm seeing very slow block processing times and cannot catch up with the network.Worked perfectly before the hard fork.What is going on?: This is the state clearing process working as intended.It looks like a DoS, because it's "poking" about 20 million accounts by zero-value calling each one, and each call causes the protocol to notice that the account is empty and thereby delete it from the state.

The process of deleting the account from the state takes O(log(n)) disk writes, but the zero-value call only costs 700 gas, and so it these transactions take longer than usual to process.Note that any state clearing mechanism that we could have implemented would still have required making these 20 million account deletions, so this is unfortunately an unavoidable temporary side effect; we can dial down the speed of the process if users find the current level too difficult to deal with, though that will increase the length of time the spam will have to go on.The only way to do it is to poke empty accounts, and once all ~20 million empty accounts have been poked it will no longer be possible to do this; all modifications to the account tree will cost at least 5700 gas per modification.Computers with hard disk drives (HDD) are slowed down more compared to computers with solid state drives (SSD).Computers with 4Gb RAM + 4Gb swap disk or less were also harder hit, with the node clients crashing.

The following output from a full sync shows the speed of syncing improving after the end of the account bloat transaction attack blocks and slowing down again during the low impact transaction spam attack blocks.why asic litecoinFurther logs from the geth full node sync can be found here: The following output shows the syncing speed improving after the low impact transaction spam attack blocks:bitcoin lohnt es sich nochJump to: , One of the most common problems with the Ethereum Wallet application is keeping the blockchain in sync with the Ethereum network.bitcoin exchange ceo deathThis page describes some of the common issues users may encounter while trying to sync the blockchain and potential methods to work around the problems.msi bitcoin motherboard

Note that Ethereum Wallet will not display your account balance correctly when it is not synced fully or correctly.aldi bitcoinContents 1 2 3 4 5 6 Check that your the clock on your computer is close to real time.pagamenti bitcoin italiaChange your system settings so that your system clock is synced to an NTP (Network Time Protocol) server.ptc de bitcoinsYou may be encountering some problems syncing Ethereum Wallet (or Mist) to the Mainnet blockchain.bitcoin private key backupA common problem when syncing Ethereum Wallet's blockchain data is that the syncing slows down between blocks 2,283,397 and 2,620,384 due to the attack on the Ethereum network (reference Why is my node synchronization stuck/extremely slow at block 2,306,843?).bitcoin per skrill

The syncing also slows down between blocks 2,675,055 and 2,717,576 due to the state clearing process to remove the 20 million empty accounts created by the network attack.If you have a problem with slow syncing, the easiest way to recover from this slowdown is to remove your blockchain data and restart Ethereum Wallet.Ethereum Wallet will then perform a fast sync which skips over these attack blocks.WARNING: Make sure you back up your keystore directory so you don't accidentally delete your account information.Depending on your operating system, you will find the chaindata subdirectory in: Alternatively, you can run geth removedb to remove the blockchain data.It should now start fast syncing the blockchain data.Alternatively, run geth --fast --cache 512 console and then start Ethereum Wallet.Refer to Network Ports, Files And Directories for more information on the location of Ethereum software files and directories on your computer.Another method to reduce sync-time is to run your copy of the blockchain from a Solid State Drive (SSD) as rotational drives are much more affected by the I/O generated by the clearing process, if you are running a full sync.

Compare your logging messages with the following logging messages to determine whethere your node client is fast syncing or normal syncing.The following messages are displayed on the `geth --fast console` (pre 1.6.0) screen - note the header(s) and receipt(s): And following is the equivalent geth 1.6.0 (Testnet) message during a fast sync: Here is the transition when the `--fast` syncing (pre 1.6.0) has completed and normal syncing starts: And following is the equivalent geth 1.6.0 message during the transition: And the following messages are displayed on the `geth console` (pre 1.6.0) screen - note the block(s): And following is the equivalent geth 1.6.0 message from a full sync transitioning to incremental single block updates.The blocks will sync in batches, and when your blockchain data is up to date, single blocks are received approximately every 14 seconds: You can use Parity and start the Parity syncing using the following command line parameter for a reasonably quick sync: You can access the Parity user interface by navigating in your browser to http://localhost:8080 .