operating system - What is the relative and absolute deadline? -

operating system - What is the relative and absolute deadline? -

i'm reading paper edf scheduling algorithm , i'm going implement after it. couldn't find acceptable reply asked question. know question's answer?

there no mystery in these terms

relative deadline deadline relative start of job (start of thread, ...), absolute deadline specific point in time.

so periodic job - illustration task executed every sec - can have constant relative deadline - illustration 100ms - on each run absolute deadline different (11:10:00.100, 11:10:01.100, 11:10:02.100, ...).

see page 335 - http://books.google.pl/books?id=iilij3jxnrac&printsec=frontcover&hl=pl&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false (really source of info operating systems)

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