Questions tagged [synchronization]

Syntonization is the process where your node / client (geth, Ethereum Wallet, etc) receives the most up to date data from the Ethereum blockchain.

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Why would a node stop updating chain?

I am running a private network and one node seems to have stopped updating its chain. It is stuck at block 264 while the others are hundreds past it. It is still connected to the network, but it has ...
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How can I find out what the highest block is?

I'm syncing up a new node. How can I find out what the latest block is so that I know how far I've got to go?
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49 views

Service to show number of state entries for syncing?

When syncing a node it would be helpful to know (an estimate of) the number of state entries in the current state to assess how long it takes to finish syncing a node. Is there a website, service or ...
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581 views

Fast syncing never stop

I have run geth --fast --cache=1024 for a week and I think I am almost complete: etherscan.io shows: LAST BLOCK 4005552 and my eth.syncing shows: { currentBlock: 4005449, highestBlock: 4005553, ...
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Error trying to synchronize geth clique client after shutdown

I'm working with a private network using geth clique clients. Each time a node shut downs, (after a power cut, or just killing the geth process), if a try to put it to work again, the node can't ...
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Parity syncing in archive mode stuck at block 4839206

I am running Parity inside docker in pod in Kubernets on Google Cloud. The pod is using disk with 2700 GB for storing Ethereum blockchain, and currently disk has about 2100 GB free. Unfortunately for ...
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3answers
404 views

Alternative of geth Ethereum Node

I am new to Ethereum block-chain.I am trying to syncing ethereum node in testnet(Rinkeby).I am using HDD for syncing geth ethereum node.I know it very slow to syncing. So,Is it any alternative of ...
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38 views

Can't catchup with Mainnet

16GB Linux, 512 GB SSD, mainly started for RPC purposes only. No mining activity. geth --datadir ./data --syncmode fast console --rpc --rpcport 8545 --rpcaddr "0.0.0.0" --rpccorsdomain "*" --rpcapi "...
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Unable to Synchronize raspberry pi node my private network

I have created a private network with 3 nodes - two nodes in computer and one in raspberry pi I connected computer and raspberry pi to same network through LAN computer ip: 192.168.122.1 pi ip ...
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36 views

Ethereum parity high IO - slow response for getBalance

We have a strange problem with parity after our smart contract addresses are increased. There is a scheduled process to check for the transaction records and we have web3j calls to getBalance/...
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1answer
382 views

Finding eth balance within geth [duplicate]

I'm pretty new to mining, but I hope someone can help me. when I use eth.syncing, I get this result: currentBlock: 1, highestBlock: 4884563, knownStates: 42878500, pulledStates: 42868030, ...
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1answer
30 views

Token real synchronization from my website

I like to integrate a real token synchronization (From distributer wallet account to user's wallet address the token need to transfer) in my website. My website needs to interact with the blockchain ...
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Synchronisation failed, dropping peer valid and Impossible reorg

I'm working on a project called Rubykube Workbench. But the "ethereum/client-go:Stable" container gives error. System information Geth version: 1.8.23-stable-c9427004 (docker container) OS & ...
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49 views

Best way to support restoring of all the keys of a mapping

I have a contract, in which I maintain the keys of a mapping in two different ways: Storing each key in an array Emitting an event for each key I do this in order to be able to restore the keys (and ...
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2answers
73 views

Reading most recent blocks without syncing chain

I would like to be able to read the newly created blocks and list of transactions it included within, without storing the chain on my desktop. Can that be done? Thanks.
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645 views

parity --warp taking forever

I am trying to sync the parity wallet by running parity --warp Apparently this is only meant to take a couple of minutes, but this has been going on for a couple of hours. Does any know how much ...
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55 views

Slow sync since Constantinople reason?

Noticed two days ago my live ETH node has not been able to keep up with the network. It is a fast VPS that always was fine until two days ago. Running 2.3.5-stable of Parity. Block generation is ...
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35 views

Private blockchain losing access to older blocks

So, my private blockchain became out of sync and one of the nodes reset to block 0 – it then synced up with the other nodes. The node that went to block 0 is the node that is providing the rpc port ...
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Geth syncing keeps failing at block number 7279144

Here's the log. INFO [03-04|04:55:46.685] Imported new block headers count=0 elapsed=5.165ms number=7279336 hash=87c04b…cde65c age=3d12h45m ignored=192 INFO [03-04|04:55:46.728] ...
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1answer
1k views

Help with Syncing Geth: 1.8.23

I am not sure if I'm alone in this but it seems that the latest Geth client is very slow. I tried posting the issue on Geth's github page but it got closed almost immediately and no one is replying ...
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Are regions a factor in downloading current Ethereum blocks?

We are currently having some problems syncing our nodes. Our server is located at the Asia Pacific region. Earlier our servers where in Azure and we don't have any troubles syncing. It has been 3 ...
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Wallet stopped syncing on block 7,160,687

my Mist/ Ethereum Wallet version 0.11.1 stopped process synchronisation on block 7,160,687. What do I have to do to get it going?
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Rinkeby Ether faucet error [duplicate]

I got funded from the rinkeby faucet but it didn't show up in my wallet. Does anyone have an idea why the sync with the rinkeby blockchain stopped with just 218 remaining?
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Node replication

In a multi node network (4 node), if one of the node is down and comes up with higher block number and with faulty data . Will all other three nodes replicates with the failed node data. or all the ...
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74 views

Why geth light mode syncing keeps stopping after it stopped first time? And how should I figure this out?

I used geth fast sync mode before, but it kept stopped and when it stopped, I had to delete all synced data and start over again. So I changed to "light" sync mode, and it worked well for a month. But ...
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How does new block propagation, step by step, work in Ethereum?

I'm trying to understand how nodes propagate new valid blocks in Ethereum. Here's my attempt at a step by step how description of the process: 1. Miner constructs a new block and starts iterating ...
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2k views

Very slow Ethereum sync

I was around block 2.5 million on a "full" sync and I think it would've taken months to fully sync. At times the blockchain grew faster than my computer was syncing. I moved that directory over to a ...
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1answer
988 views

Do you have to download all 'Imported new state entries' before syncing with the highest block?

I'm new to Geth... I'm performing a fast sync using the following command: geth --syncmode "fast" --cache 4096 I had been downloading block data until about 1000 blocks from the highestBlock. Then ...
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Geth crashes, “missing trie node”, rlp: expected List

I am struggling with failing geth with my Dapp. I got an error like this: Web3 UnhandledPromiseRejectionWarning: Error: Returned error: missing trie node ...
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1answer
1k views

Parity on Windows 64bit Questions

Today I downloaded Parity for Windows. Start it with parity --author 0x9999999999999 --rpc --rpcaddr 192.x.x.1 --rpcport 8545. Then I have started ethminer ethminer -G -F 192.x.x.1:8545 When I go ...
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Geth not download certain block number

I'm running a testnet geth node in fastmode and I have a worker that will check the transaction data in the blocks. However, I noticed that geth jumped from block 4990417 to 4990429, skipping the ...
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Header broke chain ancestry, Synchronisation failed, dropping peer & retrieved hash chain is invalid

System information Geth version: Geth Version: 1.8.22-stable Git Commit: 7fa3509e2eaf1a4ebc12344590e5699406690f15 Architecture: arm Protocol Versions: [63 62] Network Id: 1 Go Version: go1.11.5 ...
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Error in syncing of Ropsten testnet on geth node

I am using a geth node to sync with the ropsten testnet . For the last few days I have been encountering the following error frequently Error: invalid gas used (remote: 7987157 local: 7897475) All ...
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1answer
100 views

Why is Geth importing the same block multiple times?

I have this geth node that run in testnet and a program(worker) that will read the block every second. I notice sometimes, the geth imported segment chain with same block number but different hash, ...
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1answer
2k views

geth does not sync out of the box

I have a fresh new installation of Ubuntu 16.04 and I've followed manual to setup geth sudo apt-get install software-properties-common sudo add-apt-repository -y ppa:ethereum/ethereum sudo add-apt-...
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1answer
774 views

How to use --trie-cache-gens value as performance tunning on downloading the blockchain (Geth)?

I would like to know how to use a specific command in geth. Geth lists "Performance tuning options: --trie-cache-gens value (number of trie node generations to keep in memory - default: 120). Thing ...
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100 views

Really slow syncing on mainnet with SSD disk and archive mode

I've set up a full Parity Ethereum node connected to the main network on a server with 2TB SSD, 4 CPUs and 8GB memory. I've set the pruning mode to archive since my application does a lot of state ...
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3answers
4k views

Geth disk and memory performance analysis

A week ago I started a synchronization of a geth node with these parameters: --fast --cache=1024 --rpc --rpcaddr "0.0.0.0" --ws --wsaddr "0.0.0.0" --wsorigins="*" The result that I have obtained is ...
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ETH NODE Sync issue - It first syncs, then slows down and falls behind

Geth server Info: 6 cpus, 18gb mem SSD: 450 GB (42%used) Geth Config is below. So we have been upgrading our server one after the other to hopefully resolve this issue... We are supporting an ...
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2answers
790 views

Is it recommended to run Ethereum supernodes?

In the early days of bitcoin there was a demand for system administrators who were able to run supernodes to support the network with stable nodes and high bandwidth. Litecoin is still recommending ...
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What are the benefits of ethereum 'archive' sync mode and who should use it?

We have set up a private Ethereum node for our blockchain application connected to the mainnet. The node runs on a server with 2TB SSD, 4 CPU and 6GB memory. It's been syncing for about a week and is ...
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1answer
36 views

run multiple parity clients in parallel

How can I run multiple parity instances on one machine? With geth it's easy. I just have to set different --port numbers. What's the equivalent for parity? I want to recreate Afris scenario.
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Syncing events history for specific addresses, possible?

I am writing software that needs the full history of events but I only need it for a certain contract address, which I would guess is a very common use case for app developers. Is there a way I can ...
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2answers
1k views

Persistent “deep transaction reorg” whilst syncing full geth node

Whilst syncing a new full node using the geth comand "geth --syncmode full", every other line after a few hundred blocks I see the following: WARN [12-02|02:30:46] Skipping deep transaction reorg ...
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132 views

Speeding up Geth Synchronization

What would help speed up synchronization? I'm not sure if it's a bandwidth issue or a CPU issue? If I were to upgrade my processor would that help make it move faster or do I need to upgrade my ...
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Mainnet sync Broken

I am having a Mainnet on Azure VM which was syncing the network as expected, but mean while after adding Ropsten network syncing on the same VM simultaneously I'm facing problem with Mainnet sync ...
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Delay on receiving block by peered node

Sometimes it takes an around of 25ms to import new block by the other peered node after mined by miner. But sometimes it increases directly around 400ms to import block by peered node after mined by ...
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1answer
587 views

Cannot synchronize two nodes in private Ethereum blockchain

I am trying to build a private testnet with two nodes. This is my genesis block: { "config": { "chainId": 15, "homesteadBlock": 0, "eip155Block":0, "eip158Block":0 }, "...
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1answer
3k views

“retrieved ancestor invalid” message during synchronization

We have been running a private ethereum network for a couple of months. Today we tried to add a new node to the network. When the node was synchronizing, (after 3-4 hours) it stopped with the ...
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1answer
65 views

Who is providing the syncing and bootstraping services on ETH? Do they get paid?

I understand that a node can request synchronization from the network. But who is fulfilling those requests? How are these requests sent out? Are they sent to the entire network or 1 specific node? ...