> >
> > a) i can burn at full speed on quite loaded system without problems!!!
> > b) pipes slow things down
> > c) mkisofs is the slowest part.
>
> Yes, mkisofs | cdrecord won't work well for file tree with a lot of
> files, from my experience.
>
that's normal but i tried mkisofs/cdrecord combination on directory
consisting of 5 files 600MB total.

and i got 16x max.