Flow of Process chain is :
Data services staging ->PSA for Transactional data ->Staging DSO -> EDW DSO -> Cube.
DS staging ->PSA; IP load time taken 30 mins
PSA -> Staging DSO; DTP time taken 36 mins
First DSO Activation; time taken 2 hours
Staging DSO -> EDW DSO; DTP time taken = 1.40 hrs
Second DSO activation time taken = 3 hours
EDW DSO -> Cube DTP time taken to cube 2 hours
Total time taken 9.7 hours,
total records transfer to target almost 15 millions on every load.
Please suggest some pointers which can help me tune the process chain.