I run a private chain in vps with docker, it works fine util transaction submit. logs:
it's not about the difficulty, few second for mining a new empty block, and mining stuck in "Submitted transaction fullhash=...." for 8 minutes.
cpu usage almost 100% when mining but less than 5% when stuck.
vps: ubuntu16.04 1cpu 2g ram
what is the problem? does this means it's impossible to run a private chain and mining in a single core vps?