* peer startup speed
** 30-60 seconds session; is peer startup time differential affecting initial speed?
** simultaneous startup of different clients in internal/external swarms
** 1, 2, 3, 4, 5, ... seeders
** 40 peers of the same type (different experiments for different types)
** 20/20
** 10/10/10/10
* optimism level
** increase/decrease chance of optimistic unchoke; does it affect swarm speed?
* measure "altruism"
** upload/download ratio evolution with respect to time