(In reply to Ulrich Windl from comment #17) > (In reply to Sinisa Bandin from comment #15) > > > Without parallel: > > real 0m43.247s > > user 0m32.279s > > sys 0m14.510s > > > > With parallel: > > real 0m6.568s > > user 0m30.678s > > sys 0m9.899s > > The fact that parallel execution uses less user and sys CPU made me wonder: > Did you flush the caches before each test? No, this is all after running dracut a few times without "time" and doing some other random stuff. I just wanted to see the general effect, didn't mind about +/- 10% Now that you say it, it is interesting observation... will take another try afternoon, flushing the caches before each run.