<s>
Proportional	B-Operating_System
Share	I-Operating_System
Scheduling	I-Operating_System
is	O
a	O
type	O
of	O
scheduling	O
that	O
preallocates	O
certain	O
amount	O
of	O
CPU	O
time	O
to	O
each	O
of	O
the	O
processes	O
.	O
</s>
