Page 147 - slides.dvi

•
•
•
•
•
NT
–
–
–
–
–
–
–
If
–
–
Case
On
CPU
“.
fg
no
for
On
.
Hybrid
Yes,
Also
.
Default
Study—
Threads
one
(priority
get
this
Priorities
Priorities
thread
return
0
Low-level
is
have
runnable
is
Workstation
Subsequently,
gets
quantum
boost
1–15:
from
Scheduling
base
true.
16–31:
2
quantum
Functions
performance
also
for
thread,
static/dynamic
I/O,
and
reserved
double
current
(but
ticks
get
“real
GUI
boost
or
for
“variable”
for
priority
current
current
dispatch
time”
priority
zero
triple
threads
the
quantum
quantum
(∼20ms)
(≥
‘idle’
on
page
(static
priority
also
decays
(dynamic)
base)
is
scheduling:
by
awaiting
quantum.
thread
1
foreground
stretching:
thread)
priority).
priority.
doubled)
input:
boosted
after
priorities.
Workstation,
(which
by
12
each
current
application”
ticks
executes
priority
completed
driver-specific
(window
DPCs).
(∼120ms)
with
on
boosted
amount.
quantum.
to
focus)
14
Server.
143