ORPHAN BLOCKS - not able to load blockchain (0.9.2) #4356

After start and loading some new blocks it gets slower and slower and last hour i get orphan blocks ONLY.

I tried run deamon whole night and it processed around 5000 blocks. Its seriously unusable. Similar bug here #4353

I've been seeing this too w the same version. Also reindex always fail, also other problems with LevelDB - both 0.9.2 and 0.9.1. It's completely unusable on ARM - after about 50 attempts (reindex, wipe all data, restart, etc.) I still can't get bitcoin to work properly.

My suggestion is to sync with -maxconnections=1 Just restart if the one node you connect to is a slow one. This way you will get nearly no orphan blocks at all. Only the newly anncounced blocks. Of course after sync is finished you should remove the -maxconnections=1 parameter. I believe that this is the second smartest way to sync.

@cozz ... or use the bootstrap.dat torrent

@laanwj True. Just edited to second smartest way:)

@cozz: I tried that too, didn't work either, caused corruption (different error perhaps, I can't remember there were so many LevelDB errors) @laanwj: thought of that too. As far as I know no bootstrap.dat torrent for ARM/Pi.

@rippler The bootstrap has the same format on every platform, it's the leveldb databases that are different.

Thank you for that information!

Perhaps we can remove commit f59d8f0b644d49324cabd19c58cf2262d49e1392 (pull #3514) for now since this is what caused these problems, and it worked better before this commit.