Synchronization does not end for several days.

[attswk]

root@binance-core:~/go/src/github.com/binance-chain# curl -X POST -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}' http://localhost:8545
{"jsonrpc":"2.0","id":1,"result":{"currentBlock":"0x6d661c","highestBlock":"0x6d6676","knownStates":"0x7c4d1e2","pulledStates":"0x7c4d1e1","startingBlock":"0x6c302e"}}

highestBlock - currentBlock = 40 ~ 130
The difference in height between 40 and 130 blocks is maintained and synchronization does not end.

[DefiDebauchery]

What're the IOPS of your storage device? Low/Mid-end SSDs won't cut it anymore. You really need NVMe to properly catch up.

[ChuckCaplan]

My knownStates value is around 300 million and I have been syncing in fast mode from scratch for 2 days. It would be great if someone could post a good knownStates number as of a certain date so we can get a sense for how close we are. A few things I did (I think) helped:

1. Definitely use an SSD. An HDD unfortunately won't cut it.
2. Set MaxPeers = 200 in config.toml. But keep in mind the higher the number the more resources are used.
3. There are additional BootstrapNodes and StaticNodes values that I found with some Googling and merged into my config.toml. I unfortunately no longer have those links but you should be able to find them with some searching.

[hacfox]

@attswk Yes, this problem has bothered me for many days, sometimes it stops syncing, or 1-5 block per 10s, we have been 3000+ blocks away. but now we have caught up the latest block.
what I have done is:

1. Set MaxPeers = 200 in config.toml. it takes about 5 minutes when I restart the node.
2. Modify BootstrapNodes and StaticNodes.

BootstrapNodes = ["enode://1cc4534b14cfe351ab740a1418ab944a234ca2f702915eadb7e558a02010cb7c5a8c295a3b56bcefa7701c07752acd5539cb13df2aab8ae2d98934d712611443@52.71.43.172:30311","enode://28b1d16562dac280dacaaf45d54516b85bc6c994252a9825c5cc4e080d3e53446d05f63ba495ea7d44d6c316b54cd92b245c5c328c37da24605c4a93a0d099c4@34.246.65.14:30311","enode://5a7b996048d1b0a07683a949662c87c09b55247ce774aeee10bb886892e586e3c604564393292e38ef43c023ee9981e1f8b335766ec4f0f256e57f8640b079d5@35.73.137.11:30311"]
StaticNodes = ["enode://f3cfd69f2808ef64838abd8786342c0b22fdd28268703c8d6812e26e109f9a7cb2b37bd49724ebb46c233289f22da82991c87345eb9a2dadeddb8f37eeb259ac@18.180.28.21:30311","enode://ae74385270d4afeb953561603fcedc4a0e755a241ffdea31c3f751dc8be5bf29c03bf46e3051d1c8d997c45479a92632020c9a84b96dcb63b2259ec09b4fde38@54.178.30.104:30311","enode://d1cabe083d5fc1da9b510889188f06dab891935294e4569df759fc2c4d684b3b4982051b84a9a078512202ad947f9240adc5b6abea5320fb9a736d2f6751c52e@54.238.28.14:30311","enode://f420209bac5324326c116d38d83edfa2256c4101a27cd3e7f9b8287dc8526900f4137e915df6806986b28bc79b1e66679b544a1c515a95ede86f4d809bd65dab@54.178.62.117:30311","enode://c0e8d1abd27c3c13ca879e16f34c12ffee936a7e5d7b7fb6f1af5cc75c6fad704e5667c7bbf7826fcb200d22b9bf86395271b0f76c21e63ad9a388ed548d4c90@54.65.247.12:30311","enode://f1b49b1cf536e36f9a56730f7a0ece899e5efb344eec2fdca3a335465bc4f619b98121f4a5032a1218fa8b69a5488d1ec48afe2abda073280beec296b104db31@13.114.199.41:30311","enode://4924583cfb262b6e333969c86eab8da009b3f7d165cc9ad326914f576c575741e71dc6e64a830e833c25e8c45b906364e58e70cdf043651fd583082ea7db5e3b@18.180.17.171:30311","enode://4d041250eb4f05ab55af184a01aed1a71d241a94a03a5b86f4e32659e1ab1e144be919890682d4afb5e7afd837146ce584d61a38837553d95a7de1f28ea4513a@54.178.99.222:30311","enode://b5772a14fdaeebf4c1924e73c923bdf11c35240a6da7b9e5ec0e6cbb95e78327690b90e8ab0ea5270debc8834454b98eca34cc2a19817f5972498648a6959a3a@54.170.158.102:30311","enode://f329176b187cec87b327f82e78b6ece3102a0f7c89b92a5312e1674062c6e89f785f55fb1b167e369d71c66b0548994c6035c6d85849eccb434d4d9e0c489cdd@34.253.94.130:30311","enode://cbfd1219940d4e312ad94108e7fa3bc34c4c22081d6f334a2e7b36bb28928b56879924cf0353ad85fa5b2f3d5033bbe8ad5371feae9c2088214184be301ed658@54.75.11.3:30311","enode://c64b0a0c619c03c220ea0d7cac754931f967665f9e148b92d2e46761ad9180f5eb5aaef48dfc230d8db8f8c16d2265a3d5407b06bedcd5f0f5a22c2f51c2e69f@54.216.208.163:30311","enode://352a361a9240d4d23bb6fab19cc6dc5a5fc6921abf19de65afe13f1802780aecd67c8c09d8c89043ff86947f171d98ab06906ef616d58e718067e02abea0dda9@79.125.105.65:30311","enode://bb683ef5d03db7d945d6f84b88e5b98920b70aecc22abed8c00d6db621f784e4280e5813d12694c7a091543064456ad9789980766f3f1feb38906cf7255c33d6@54.195.127.237:30311","enode://11dc6fea50630b68a9289055d6b0fb0e22fb5048a3f4e4efd741a7ab09dd79e78d383efc052089e516f0a0f3eacdd5d3ffbe5279b36ecc42ad7cd1f2767fdbdb@46.137.182.25:30311","enode://21530e423b42aed17d7eef67882ebb23357db4f8b10c94d4c71191f52955d97dc13eec03cfeff0fe3a1c89c955e81a6970c09689d21ecbec2142b26b7e759c45@54.216.119.18:30311","enode://d61a31410c365e7fcd50e24d56a77d2d9741d4a57b295cc5070189ad90d0ec749d113b4b0432c6d795eb36597efce88d12ca45e645ec51b3a2144e1c1c41b66a@34.204.129.242:30311","enode://bb91215b1d77c892897048dd58f709f02aacb5355aa8f50f00b67c879c3dffd7eef5b5a152ac46cdfb255295bec4d06701a8032456703c6b604a4686d388ea8f@75.101.197.198:30311","enode://786acbdf5a3cf91b99047a0fd8305e11e54d96ea3a72b1527050d3d6f8c9fc0278ff9ef56f3e56b3b70a283d97c309065506ea2fc3eb9b62477fd014a3ec1a96@107.23.90.162:30311","enode://4653bc7c235c3480968e5e81d91123bc67626f35c207ae4acab89347db675a627784c5982431300c02f547a7d33558718f7795e848d547a327abb111eac73636@54.144.170.236:30311","enode://c6ffd994c4ef130f90f8ee2fc08c1b0f02a6e9b12152092bf5a03dd7af9fd33597d4b2e2000a271cc0648d5e55242aeadd6d5061bb2e596372655ba0722cc704@54.147.151.108:30311","enode://99b07e9dc5f204263b87243146743399b2bd60c98f68d1239a3461d09087e6c417e40f1106fa606ccf54159feabdddb4e7f367559b349a6511e66e525de4906e@54.81.225.170:30311","enode://1479af5ea7bda822e8747d0b967309bced22cad5083b93bc6f4e1d7da7be067cd8495dc4c5a71579f2da8d9068f0c43ad6933d2b335a545b4ae49a846122b261@52.7.247.132:30311"]

3. I take a long time to monitor the log. if it was 1-3 blocks/10s for a while, I do to restart the node.
4. now I have caught up the latest block, and the log shows:

INFO [05-08|06:54:23.957] Imported new chain segment               blocks=1  txs=253  mgas=32.027  elapsed=4.504s    mgasps=7.110   number=7235575 hash=b4da55…050836 dirty=374.50MiB
INFO [05-08|06:54:26.725] Imported new chain segment               blocks=1  txs=173  mgas=29.465  elapsed=2.765s    mgasps=10.656  number=7235576 hash=60c6e6…096cd2 dirty=376.39MiB
INFO [05-08|06:54:28.349] Imported new chain segment               blocks=1  txs=346  mgas=25.366  elapsed=1.623s    mgasps=15.623  number=7235577 hash=914e65…16fbe9 dirty=377.92MiB ignored=1
INFO [05-08|06:54:29.633] Imported new chain segment               blocks=1  txs=129  mgas=20.192  elapsed=1.271s    mgasps=15.878  number=7235578 hash=641158…c8c6fa dirty=379.08MiB
INFO [05-08|06:54:31.559] Imported new chain segment               blocks=1  txs=204  mgas=29.430  elapsed=1.925s    mgasps=15.287  number=7235579 hash=246172…ceb998 dirty=379.70MiB
INFO [05-08|06:54:34.005] Imported new chain segment               blocks=1  txs=192  mgas=24.268  elapsed=1.727s    mgasps=14.047  number=7235580 hash=2acde2…95f43b dirty=380.86MiB

This problem has been encountered by many people now, and I know that this does not get to the root of the problem, and can not be applied to everyone, but I hope it works for you.

[j75689]

Hi all.
Thank you for your report.
We have received many report of a sync issue.
You can try the latest version. If you have any probleums, please feedback #338.
We will pay attention to the issue #338 for a long time, and if there are any updates, we will explain it on this issue.

Thanks.