<s>
In	O
computer	B-General_Concept
science	I-General_Concept
for	O
Operating	B-General_Concept
systems	I-General_Concept
,	O
aging	O
(	O
US	O
English	O
)	O
or	O
ageing	B-Operating_System
is	O
a	O
scheduling	O
technique	O
used	O
to	O
avoid	O
starvation	B-Operating_System
.	O
</s>
<s>
Fixed	O
priority	O
scheduling	O
is	O
a	O
scheduling	O
discipline	O
,	O
in	O
which	O
tasks	B-General_Concept
queued	O
for	O
utilizing	O
a	O
system	O
resource	O
are	O
assigned	O
a	O
priority	O
each	O
.	O
</s>
<s>
A	O
disadvantage	O
of	O
this	O
approach	O
is	O
that	O
tasks	B-General_Concept
assigned	O
with	O
a	O
lower	O
priority	O
may	O
be	O
starved	O
when	O
a	O
large	O
number	O
of	O
high	O
priority	O
tasks	B-General_Concept
are	O
queued	O
.	O
</s>
<s>
Aging	O
is	O
used	O
to	O
gradually	O
increase	O
the	O
priority	O
of	O
a	O
task	O
,	O
based	O
on	O
its	O
waiting	O
time	O
in	O
the	O
ready	B-Operating_System
queue	I-Operating_System
.	O
</s>
<s>
In	O
priority-based	O
scheduling	O
algorithms	O
,	O
a	O
major	O
problem	O
is	O
indefinite	O
block	O
,	O
or	O
starvation	B-Operating_System
.	O
</s>
<s>
This	O
technique	O
can	O
be	O
used	O
to	O
reduce	O
starvation	B-Operating_System
of	O
low	O
priority	O
tasks	B-General_Concept
.	O
</s>
<s>
There	O
are	O
many	O
ways	O
to	O
implement	O
aging	O
,	O
but	O
all	O
have	O
the	O
same	O
principle	O
that	O
the	O
priority	O
of	O
a	O
process	O
should	O
increase	O
as	O
it	O
waits	O
in	O
the	O
ready	B-Operating_System
queue	I-Operating_System
.	O
</s>
