fixed timeslice

[Jason mclaughlin]

can't scheduling be unfair when a fixed timeslice is used as the time
up til a process can run?

won't it work out that if a program is using the harddrive, and
another is using cpu time and using up it's timeslices, that the
cpu user will give less runtime opportunity to the harddrive user
because of a wait up until timeslice to use the harddrive again?

like, doesn't the length of a timeslice change the fairness of
scheduling opportunity for harddrive use?

can't it span the time that something is ready to take from the
harddrive, til the time the harddrive can be used again?

can't it anyways in some cases though no matter what, because of how
using up til a timeslice is available sometimes when something wants
to use the harddrive again,
and because what wants to use the harddrive can be behind what uses a
whole timeslice?
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