Multiple jobs option doesn´t work after some tim e

[Michael Stather]

Hi,

I´ve a very large source tree. When I compile it with eG "-j 4" it 
starts and spawns 4 jobs, but after some time (it goes down into many 
subdirs)
I see that only one job is spawned (by the CPU usage) until the 
compilatione ends. I don´t see any errors from make.
Does anyone have a solution or idea what this could be?

regards

Michael