<s>
In	O
computer	B-General_Concept
science	I-General_Concept
,	O
The	O
System	O
Contention	O
ScopeSilberschatz	O
,	O
Abraham	O
,	O
and	O
Peter	O
B	O
.	O
Galvin	O
.	O
</s>
<s>
"	O
Thread	B-Operating_System
Scheduling.	O
"	O
</s>
<s>
Operating	B-General_Concept
System	I-General_Concept
Concepts	O
.	O
</s>
<s>
is	O
one	O
of	O
two	O
thread-scheduling	O
schemes	O
used	O
in	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
This	O
scheme	O
is	O
used	O
by	O
the	O
kernel	B-Operating_System
to	O
decide	O
which	O
kernel-level	B-Operating_System
thread	I-Operating_System
to	O
schedule	O
onto	O
a	O
CPU	O
,	O
wherein	O
all	O
threads	B-Operating_System
(	O
as	O
opposed	O
to	O
only	O
user-level	O
threads	B-Operating_System
,	O
as	O
in	O
the	O
Process	B-Operating_System
Contention	I-Operating_System
Scope	I-Operating_System
scheme	O
)	O
in	O
the	O
system	O
compete	O
for	O
the	O
CPU	O
.	O
</s>
<s>
Operating	B-General_Concept
systems	I-General_Concept
that	O
use	O
only	O
the	O
one-to-one	B-Operating_System
model	I-Operating_System
,	O
such	O
as	O
Windows	O
,	O
Linux	O
,	O
and	O
Solaris	O
,	O
schedule	O
threads	B-Operating_System
using	O
only	O
System	B-Operating_System
Contention	I-Operating_System
Scope	I-Operating_System
.	O
</s>
