Using
Abbreviations
for
A
ttribute
Names
and
V
alues
If
an
y
job
in
a
queue
can
b e
sc
heduled
to
more
than
one
ph
ysical
prin
ter,
the
order
in
whic
h
jobs
prin
t
will
v
ary
based
on
the
ph
ysical
prin
ter
that
b ecomes
a
v
ailable
rst.
F
or
example,
if
job
B
can
b e
sc
heduled
to
either
PhyPrt1
or
PhyPrt2 ,
but
job
A
can
b e
sc
heduled
only
to
PhyPrt1 ,
job
B
will
prin
t
b efore
job
A
if
PhyPrt2
b ecomes
a
v
ailable
rst.
This
is
true
regardless
of
the
sc
heduling
metho d.
About
the
Priority-FIF
O
Scheduling
Method
Sp o olers
using
the
priority-fo
sc
heduling
metho d
use
b oth
the
order
in
whic
h
jobs
w
ere
receiv
ed
b
y
the
queue
and
the
priority
of
the
job
as
sp ecied
b
y
the
job-priority
job
attribute
to
sc
hedule
jobs.
The
larger
the
v
alue
of
the
job-priority
attribute,
the
higher
the
priorit
y
is
for
the
job.
The
sp o oler
places
jobs
with
higher
priorities
in
the
queue
ahead
of
other
jobs
with
low
er
priorities
that
are
already
in
the
queue.
The
sp o oler
places
jobs
of
equal
priorit y
in
the
queue
in
the
order
in
whic
h
they
w
ere
submitted.
Figure
6-2
illustrates
the
priorit
y-fo
sc
heduling
metho d.
The
ph
ysical
prin
ter
asso
ciated
with
the
queue
is
capable
of
prin
ting
all
of
the
jobs.
The
priorit
y
of
eac
h
job
is
listed
under
the
job
and
the
jobs
w
ere
submitted
in
the
order
of
job
A
rst,
follo
w
ed
b
y
job
B,
job
C,
and
so
on.
Job
C
has
the
highest
priorit y
and
HPDPS
p ositions
it
at
the
head
of
the
queue
where
it
will
b e
the
rst
job
sc
heduled
to
prin
t.
Jobs
B
and
D
are
equal
in
priority
but
are
of
higher
priorit y
than
jobs
A,
E,
and
F.
HPDPS
p ositions
jobs
B
and
D
in
the
queue
in
the
order
in
whic
h
they
w
ere
submitted.
The
same
is
true
for
jobs
A,
E,
and
F;
they
are
equal
in
priorit y
and
p ositioned
in
the
queue
based
on
the
order
they
w
ere
submitted.
The
sp o oler
will
sc
hedule
the
jobs
in
the
order
sho
wn
at
the
b ottom
of
the
gure.
Configuring
Spoolers,
Queues,
and
Logical
Printers
6-7