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I saw the responses on a few issues regarding ethereum and blockchain sync on this site, and was wondering if anyone could help me with a problem I'm facing.

I've been trying to sync the blockchain with Geth for the past week now and have only managed to get to block 1.1 million. Though initially I enjoyed download speeds of a few second per 256 blocks, speeds have dropped to more than two min per 256 blocks over the last two days. The download keeps breaking off every 15 min with error - not enough peers.

I have tried everything from syncing system clock with time.nist.gov, enabled port forwarding to 30303, turned antivirus and firewall off etc.. but all in vain.

Is there a way to use the admin.addPeer command and connect to active nodes ? Where could i find a list of fully synced active node? Or is there any other way I could try and speed the blockchain sync up?

Any constructive advise would be much appreciated.

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    Hi and welcome to Ethereum Stack Exchange. Which version are you using? There was a hard fork at block 1,150,000 so make sure you are using the latest version of geth.
    – q9f
    Commented Apr 18, 2016 at 20:05
  • Iv got the latest geth 1.3.6, installed on win7 64 bit OS.
    – dhruv ghelani
    Commented Apr 19, 2016 at 2:23
  • @Dhruv_9 There is also an "edit" link where you can add further details to your question.
    – eth ♦
    Commented Apr 19, 2016 at 3:48
  • If you get stuck over and over again, resetting your blockchain might be the solution.
    – q9f
    Commented Apr 19, 2016 at 6:16
  • do you mean using removedb to nuke the db and start from scratch ? gosh that ll be painful to do to a weeks strenuous work..
    – dhruv ghelani
    Commented Apr 19, 2016 at 7:11

2 Answers 2

Reset to default
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took forever for me as well, with lots of timouts, but started again but never got fully stuck.

I used geth --rpc --nat=none --cache=2024

this then did speed things up a bit, but still took days.

to confirm you have synced open seperate cmd and geth attach eth.syncing

to confirm how far behind you are.

good luck

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I have meet the similar situation. After many try and test, I found that Hard disk have key impact. And change the disk to RAID or SSD (both are OK), the problem is resolve. The Blockchain sync up to top do not need more time. Hope this info can help someone.

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