[chord] how to improve chord's load balance

[william smith]

I research the chord,but I found that chord has load balance
problem?How to improve load balance?
Some paper said use virtual node can improve?What's means of virtual
node?Are the virtual node is image of a real node?How to create
virtual nodes?Does the virtual have identifier such as real node?
I need help.Thanks for replying.

Sincerely
William
5.5