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<!-- Describe the issue -->
Very slow sync. When the blocks reach approximately 550.000, the synchronization stops, or starts running very slowly (1 block per hour or 0 block per hour)
The result of running command
bitcoind -conf=/root/.bitcoin/bitcoin.conf -datadir=/root/.bitcoin -debug=1 --printtoconsole --disable-wallet
<!--- How reliably can you reproduce the issue, what are the steps to do so? -->
I have installed bitcoin-core , have created configuration file look like this
server=1
rpcuser=chainapi
rpcpassword=whyDidTheBulletProofElephantCrossTheRoad
rpcallowip=0.0.0.0/0
rpcport=8332
dbcache=8192
maxconnections=40
and have started syncing by the command
bitcoind. So after few hours I have got he error look like this
2018-11-06 15:40:55 connect() to 217.23.10.13:8333 failed after select(): No route to host (113)
2018-11-06 15:40:55 New outbound peer connected: version: 70015, blocks=549022, peer=8
2018-11-06 15:40:56 connect() to 173.239.230.40:8333 failed after select(): Connection refused (111)
2018-11-06 15:40:57 connect() to [2606:c380::215:17ff:feb3:3ec]:8333 failed: Network is unreachable (101)
2018-11-06 15:40:57 New outbound peer connected: version: 70015, blocks=549022, peer=9
2018-11-06 15:40:58 connect() to 143.248.56.117:8333 failed after select(): Connection refused (111)
2018-11-06 15:41:04 New outbound peer connected: version: 70015, blocks=549022, peer=13
2018-11-06 15:41:04 New outbound peer connected: version: 70015, blocks=549022, peer=14
2018-11-06 15:41:46 socket recv error Connection reset by peer (104)
2018-11-06 15:41:46 socket recv error Connection reset by peer (104)
<!-- What version of Bitcoin Core are you using, where did you get it (website, self-compiled, etc)? -->
Bitcoin 0.16
<!-- What type of machine are you observing the error on (OS/CPU and disk type)? -->
Ubuntu 18 , SSD Disk,
result of lshw
description: CPU
product: Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz
bus info: cpu@0
version: Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz
slot: CPU1
<!--- This is normally the contents of a `debug.log` or `config.log` file. Raw text or a link to a pastebin type site are preferred. -->
