the threading is not having any impact on the performance

[pablomelo]

On a 24 core machine reducing or increasing the number of threads didn't have any impact.

The only performance increase was moving the destination to a SSD, but it still didn't use all the IO.

[adperezmorales]

Hi Pablo.
Yes. I did some tests with threads to have one producer and many consumers but I had problems with synchronization in the Neo4j side due to the way Neo4j creates vertices and edges, blocking some objects. Neo4j only allows one thread to write (create Vertices or Edges) at a time and I was having problems on that.

As you say, using SSD will increase the performance because the read/writes in disk are faster.