[erlang-questions] A visual tour of Erlang

[Richard O'Keefe]

On 6/06/2012, at 12:25 AM, Emilio De Camargo Francesquini wrote:
> This video shows the processes communication graph for CouchDB running
> in a machine with 24-cores. CouchDB was exercised using YCSB and the
> video was generated using Ubigraph. I've posted the video here:
> 
> http://www.youtube.com/watch?v=2MO6Uv7KZ7g

(a) When you say "communication graph" what actually do you mean?
(b) What does it signify in the movie when nodes go shooting away
    from th core and disappear off-screen?