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d
i
nf
r
a
s
t
r
uc
t
u
r
e
a
s
a
s
e
r
vi
c
e
(
I
a
a
S
)
a
r
e
th
e
t
h
r
e
e
b
a
s
i
c
s
e
r
vi
c
e
m
o
de
l
s
i
n
c
l
o
ud
c
o
m
put
i
n
g.
T
h
e
r
e
a
r
e
f
o
ur
di
f
f
e
r
e
n
t
a
ppr
o
a
c
h
e
s
i
n
w
hi
c
h
t
h
e
s
e
t
h
r
e
e
s
e
r
vi
c
e
s
c
a
n
b
e
i
m
p
l
e
m
e
n
t
e
d:
pr
i
v
a
t
e
,
publ
i
c
,
c
o
m
m
u
ni
t
y
,
a
n
d
hy
b
r
i
d
c
l
o
ud.
C
l
o
ud
c
o
m
put
i
n
g
i
s
a
r
e
s
o
ur
c
e
ut
i
li
t
y
t
h
a
t
o
pe
r
a
t
e
s
o
n
t
h
e
i
n
t
e
r
n
e
t
.
T
h
e
c
o
n
c
e
pt
t
h
a
t
"
e
v
e
r
y
t
hi
ng
c
a
n
b
e
a
s
e
r
vi
c
e
"
i
s
a
t
i
t
s
f
o
un
da
t
i
o
n
.
T
h
r
o
ug
h
t
h
e
i
n
t
e
r
n
e
t
,
c
l
o
ud
c
o
m
put
i
n
g
us
e
r
s
c
a
n
a
c
c
e
s
s
c
o
m
put
i
n
g
h
a
r
dwa
r
e
a
n
d
s
o
f
t
wa
r
e
r
e
s
o
ur
c
e
s
a
s
we
b
s
e
r
vi
c
e
s
[
3]
.
T
h
e
P
a
a
S
,
S
a
a
S
,
a
n
d
I
a
a
S
a
r
e
t
h
e
t
h
r
e
e
a
pp
l
i
c
a
t
i
o
n
t
y
pe
s
o
f
c
l
o
ud
c
o
m
put
i
n
g
m
o
de
l
s
t
h
a
t
a
r
e
m
e
n
t
i
o
n
e
d.
On
e
a
pp
li
c
a
t
i
o
n
o
f
I
a
a
S
i
s
vi
r
t
ua
l
i
z
a
t
i
o
n
,
i
t
c
a
n
o
f
f
e
r
we
b
s
e
r
vi
c
e
s
a
s
t
h
a
t
to
pr
o
vi
de
c
o
m
put
i
n
g
i
nf
r
a
s
t
r
uc
t
u
r
e
r
e
s
o
u
r
c
e
s
l
i
ke
pr
o
c
e
s
s
i
n
g
po
we
r
,
da
t
a
s
to
r
a
ge
,
a
n
d
n
e
t
wo
r
ki
n
g.
I
a
a
S
b
us
i
ne
s
s
e
s
pur
c
h
a
s
e
,
o
pe
r
a
t
e
,
a
n
d
o
f
f
e
r
us
e
r
s
we
b
s
e
r
vi
c
e
s
i
n
a
dd
i
t
i
o
n
t
o
r
e
a
l
c
o
m
p
ut
i
n
g
a
n
d
s
to
r
a
ge
i
nf
r
a
s
t
r
uc
t
u
r
e
[
4
]
.
Al
t
h
o
ugh
t
h
e
y
s
h
o
w
a
"
vi
r
t
ua
l
m
a
c
hi
ne
"
(
VM
)
w
i
t
h
o
ut
h
a
vi
ng
to
b
u
y
a
n
d
m
a
i
n
t
a
in
phy
s
i
c
a
l
h
a
r
dwa
r
e
,
us
e
r
s
o
f
vi
r
t
ua
l
i
z
a
t
i
o
n
t
e
c
h
n
o
l
o
g
y
c
a
n
r
e
que
s
t
c
o
m
put
a
t
i
o
n
o
r
s
tor
a
ge
r
e
s
o
ur
c
e
s
f
r
o
m
I
a
a
S
pr
o
vi
de
r
s
.
Us
e
r
s
c
a
n
us
e
VM
s
t
o
r
un
s
y
s
t
e
m
a
nd
a
pp
l
i
c
a
t
i
o
n
s
o
f
t
wa
r
e
a
t
a
m
uc
h
r
e
duc
e
d
ha
r
dwa
r
e
c
o
s
t
.
A
s
e
r
v
e
r
w
i
t
h
s
o
m
e
c
o
m
put
a
t
i
o
n
a
l
s
t
or
a
ge
h
a
r
dwa
r
e
i
s
o
pe
r
a
t
e
d
by
a
n
I
a
a
S
pr
o
vi
de
r
,
s
o
m
e
h
o
s
t
i
n
g
s
e
r
v
e
r
s
,
a
l
s
o
kn
o
wn
a
s
VM
Hs
,
pr
o
v
i
d
e
vi
r
t
ua
l
i
z
a
t
i
o
n
s
e
r
vi
c
e
s
[
5]
.
De
pe
n
d
i
ng
o
n
t
h
e
vi
r
t
ua
l
m
a
c
hi
ne
h
o
s
t
(
VM
H
)
'
s
c
a
pa
c
i
t
y
,
i
t
c
a
n
r
u
n
o
n
e
o
r
m
o
r
e
VM
s
.
S
o
m
e
VM
H
s
m
a
y
b
e
b
u
s
y
r
u
nni
ng
n
u
m
e
r
o
us
V
M
s
whil
e
ot
h
e
r
s
a
r
e
n
e
a
r
l
y
i
na
c
t
i
v
e
w
i
t
h
f
e
w
VM
s
i
f
VM
H
s
a
r
e
n
ot
c
o
r
r
e
c
t
l
y
h
a
n
d
l
e
d
i
n
a
s
e
r
v
e
r
.
An
i
m
po
r
t
a
n
t
p
r
obl
e
m
i
n
I
a
a
S
i
s
m
a
n
a
g
i
ng
a
l
a
r
ge
n
u
m
be
r
o
f
VM
Hs
b
y
m
o
d
i
f
yi
ng
t
h
e
r
e
s
o
ur
c
e
s
a
r
e
s
t
o
r
e
d
by
VM
s
to
a
c
hiev
e
im
pr
o
v
e
d
c
o
s
t
-
pe
r
f
o
r
m
a
n
c
e
e
f
f
i
c
i
e
n
c
y
w
hi
l
e
p
r
o
vi
d
i
n
g
c
us
t
o
m
e
r
s
w
i
t
h
s
e
r
vi
c
e
l
e
v
e
l
a
gr
e
e
m
e
n
t
s
(
S
L
A
s
)
[
6]
.
On
e
t
e
c
h
ni
que
f
o
r
l
o
a
d
b
a
l
a
n
c
i
ng
VM
Hs
i
s
m
igr
a
t
i
o
n
o
f
VM
s
a
m
o
n
g
V
M
Hs
.
T
hi
s
i
nv
o
l
ve
s
m
o
vi
ng
t
h
e
wo
r
k
l
o
a
d
o
f
VM
s
f
r
o
m
o
n
e
o
v
e
r
l
o
a
de
d
VM
H
t
o
ot
h
e
r
VM
Hs
i
n
a
n
e
f
f
o
r
t
to
e
v
e
nly
d
i
s
t
r
i
b
ut
e
t
h
e
wor
k
l
o
a
d
a
m
o
n
g
a
ll
V
M
Hs
.
T
hi
s
m
e
t
h
o
d
i
nv
o
l
ve
s
t
h
r
e
e
s
t
a
ge
s
o
f
wo
r
k:
de
t
e
c
t
i
o
n
,
de
c
i
s
i
o
n
-
m
a
k
i
ng,
a
n
d
a
c
t
i
o
n
[
7]
.
T
h
e
g
o
a
l
o
f
t
h
e
de
t
e
c
t
i
o
n
pha
s
e
i
s
to
f
i
n
d
o
u
t
wh
e
t
h
e
r
a
s
e
r
v
e
r
i
s
im
ba
l
a
n
c
e
d.
S
e
l
e
c
t
i
n
g
w
hi
c
h
VM
s
to
m
o
v
e
a
n
d
w
hi
c
h
vi
r
t
ua
l
m
a
c
hi
ne
pr
o
vi
d
i
ng
(
VM
H)
to
a
c
c
e
pt
th
e
m
a
r
e
t
h
e
de
c
i
s
i
o
ns
m
a
de
dur
i
n
g
t
h
e
de
c
i
s
i
o
n
-
m
a
k
i
ng
ph
a
s
e
.
I
t
i
s
n
e
c
e
s
s
a
r
y
t
o
s
us
pe
n
d
a
n
d
r
e
l
o
c
a
t
e
t
h
e
s
e
l
e
c
t
e
d
VM
s
b
e
t
we
e
n
VM
Hs
,
a
n
d
t
h
e
n
r
e
s
t
a
r
t
e
d
f
o
l
l
o
w
i
n
g
t
h
e
m
i
gr
a
t
i
o
n
[
8]
.
T
h
e
ot
h
e
r
VM
s
i
n
t
h
e
VM
Hs
c
o
n
t
i
n
ue
to
r
un
whi
l
e
t
h
e
m
i
gr
a
t
i
o
n
s
u
s
pe
n
ds
a
n
d
r
e
s
t
a
r
ts
t
h
e
VM
s
t
h
a
t
n
e
e
d
to
b
e
t
r
a
n
s
f
e
r
r
e
d.
A
s
a
r
e
s
u
l
t
,
t
h
e
wo
r
kl
o
a
d
o
f
VM
H
s
i
s
d
y
na
mi
c
;
m
o
vi
ng
VM
s
m
a
y
r
e
s
u
l
t
i
n
a
s
i
g
nif
i
c
a
n
t
i
nc
r
e
a
s
e
i
n
t
h
e
t
a
r
ge
t
VM
Hs
wo
r
kl
o
a
d.
F
o
r
t
h
e
a
d
m
i
n
i
s
t
r
a
t
i
o
n
o
f
V
M
Hs
,
a
n
e
f
f
i
c
i
e
n
t
l
o
a
d
b
a
l
a
n
c
i
ng
m
e
t
h
o
d
i
s
t
h
u
s
e
s
s
e
n
t
i
a
l
y
e
t
c
h
a
ll
e
n
g
i
ng
[
9]
.
As
r
e
s
o
ur
c
e
r
e
qui
r
e
m
e
n
t
s
i
n
c
r
e
a
s
e
,
e
v
a
l
u
a
t
e
t
h
e
VM
s
s
t
a
t
e
o
f
us
a
ge
a
n
d
t
r
a
n
s
f
e
r
t
h
e
un
de
r
ut
i
li
z
e
d
m
a
c
hi
ne
s
to
t
h
e
t
a
r
ge
t
s
y
s
t
e
m
s
,
a
n
u
m
be
r
o
f
mi
gr
a
t
i
o
n
t
e
c
hni
que
s
a
r
e
pr
o
p
o
s
e
d.
S
i
m
il
a
r
t
o
t
h
a
t
,
s
e
l
e
c
t
i
n
g
a
s
u
i
t
a
bl
e
V
M
f
o
r
t
h
e
m
i
gr
a
t
i
o
n
pr
o
c
e
s
s
i
s
e
s
s
e
n
t
i
a
l
,
s
i
n
c
e
t
h
e
pe
r
f
o
r
m
a
n
c
e
o
f
t
h
e
t
a
r
ge
t
a
ppl
i
c
a
t
i
o
n
i
s
t
h
e
VM
w
i
ll
be
i
m
pa
c
t
e
d
a
n
d
qua
li
t
y
o
f
s
e
r
vi
c
e
(
Qo
S
)
w
il
l
b
e
n
e
g
a
t
i
v
e
ly
im
pa
c
t
e
d
i
f
t
h
e
de
c
i
s
i
o
n
s
y
s
t
e
m
f
a
il
s
t
o
c
h
o
o
s
e
t
h
e
c
o
r
r
e
c
t
VM
[
10]
.
A
t
pr
e
s
e
n
t
,
t
h
e
m
i
gr
a
t
i
o
n
o
f
VM
s
i
s
de
t
e
r
m
i
ne
d
by
s
e
ve
r
a
l
f
a
c
t
or
s
,
i
n
c
l
u
d
i
n
g
t
h
e
VM
'
s
r
e
s
o
ur
c
e
u
t
i
li
z
a
t
i
o
n
,
t
h
e
r
e
qui
r
e
m
e
n
t
s
o
f
t
h
e
t
a
r
ge
t
s
y
s
t
e
m
,
Qo
S
a
n
d
t
h
e
s
e
r
v
e
r
'
s
us
e
o
f
i
t
s
r
e
s
o
ur
c
e
s
(
c
e
n
t
r
a
l
pr
o
c
e
s
s
i
n
g
u
ni
t
(
C
P
U
)
a
n
d
b
a
n
dw
i
dt
h
)
.
T
h
e
s
e
a
ppr
o
a
c
h
e
s
c
o
n
s
i
de
r
t
h
e
l
o
a
d
b
a
l
a
nc
e
i
s
s
u
e
a
s
a
j
o
b
-
a
s
s
i
g
nm
e
n
t
o
p
t
i
m
i
z
a
t
i
o
n
pr
o
bl
e
m
a
n
d
c
o
n
c
e
n
t
r
a
te
pr
i
m
a
r
il
y
o
n
c
r
e
a
t
i
n
g
o
pt
i
mi
z
a
t
i
o
n
a
l
go
r
i
t
hm
s
f
o
r
qui
c
k
m
e
r
g
i
ng.
B
ut
t
h
e
y
f
a
il
t
o
c
o
n
s
i
d
e
r
f
o
r
m
i
gr
a
t
i
o
n
c
o
s
t
s
or
t
h
e
l
o
a
d
o
n
VM
H
s
a
f
t
e
r
b
a
l
a
nc
i
ng,
t
h
e
y
a
s
u
m
e
t
h
a
t
t
h
e
VM
/VM
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a
s
e
d
o
n
t
h
e
a
r
t
i
f
i
c
i
a
l
be
e
c
o
l
o
ny
a
l
go
r
i
t
hm
(
M
O
A
B
C
Q)
m
e
t
h
o
d,
whi
c
h
us
e
s
t
h
e
Q
-
l
e
a
r
ni
ng
a
l
go
r
i
t
hm
,
a
r
e
i
nf
o
r
c
e
m
e
n
t
l
e
a
r
ni
ng
m
e
t
h
o
do
l
o
g
y
,
a
n
d
t
h
e
a
r
t
i
f
i
c
i
a
l
b
e
e
c
o
l
o
ny
a
l
go
r
i
t
hm
(
A
B
C
)
to
i
m
pr
o
v
e
m
u
l
t
i
-
o
bj
e
c
t
i
v
e
t
a
s
k
s
c
h
e
du
li
ng.
I
n
or
de
r
to
i
m
pr
o
v
e
vi
r
t
ua
l
m
a
c
hi
ne
th
r
o
ugh
put
,
o
p
t
i
mi
z
e
s
c
he
du
l
i
ng
a
n
d
r
e
s
o
ur
c
e
us
e
,
de
v
e
l
o
p
l
o
a
d
b
a
l
a
n
c
i
ng
a
m
o
n
g
VM
s
ba
s
e
d
o
n
m
a
ke
s
p
a
n
,
c
o
s
t,
a
n
d
r
e
s
o
ur
c
e
u
t
i
li
z
a
t
i
o
n
,
t
h
e
a
ppr
o
a
c
h
to
c
l
o
ud
c
o
m
put
i
n
g
e
nvi
r
o
nm
e
n
t
s
i
s
a
m
u
l
t
i
-
o
bj
e
c
t
i
v
e
m
e
t
ho
d
o
f
wor
k
s
c
h
e
du
l
i
ng.
Us
i
n
g
C
l
o
udS
i
m
,
t
h
e
a
ppr
o
a
c
h
wa
s
c
o
m
pa
r
e
d
to
ot
h
e
r
l
o
a
d
b
a
l
a
n
c
i
ng
a
n
d
s
c
h
e
du
li
n
g
m
e
t
h
o
ds
o
n
t
h
r
e
e
da
t
a
s
e
t
s
:
wor
kl
o
a
d
t
y
pe
s
i
n
c
l
ud
e
s
y
n
t
he
t
i
c
,
r
a
n
do
m
,
a
n
d
goo
gl
e
c
l
o
ud
j
o
b
s
(
Go
C
J
)
.
T
h
e
n
i
t
c
a
m
e
s
to
de
c
r
e
a
s
i
n
g
m
a
ke
s
p
a
n
,
c
o
s
t
s
,
i
mb
a
l
a
n
c
e
,
t
h
r
o
ugh
pu
t
,
a
n
d
a
v
e
r
a
ge
r
e
s
o
ur
c
e
c
o
n
s
u
m
pt
i
o
n
,
t
h
e
M
OA
B
C
Q
m
e
t
h
o
d
pe
r
f
o
r
m
e
d
b
e
t
t
e
r
t
h
a
n
th
e
o
t
h
e
r
a
l
go
r
i
t
hm
s
.
L
e
e
e
t
al.
[
15]
c
r
e
a
t
e
d
a
hi
g
h
-
pe
r
f
o
r
m
a
n
c
e
l
o
a
d
ba
l
a
n
c
e
r
t
h
a
t
i
s
s
i
m
p
l
e
t
o
us
e
w
i
t
h
K
u
b
e
r
n
e
t
e
s
f
o
r
L
i
n
u
x
ke
r
n
e
l
t
r
a
f
f
i
c
d
i
s
t
r
i
b
ut
i
o
n
,
u
t
i
li
z
i
ng
(
e
B
P
F
e
Xpr
e
s
s
Da
t
a
P
a
t
h
(
XD
P
)
)
e
B
P
F
/XDP.
I
t
e
v
a
l
ua
t
e
d
u
t
i
li
z
i
ng
I
n
t
e
r
n
e
t
M
i
x
/I
M
I
X
t
r
a
f
f
i
c
s
t
r
e
a
m
s
a
n
d
c
o
m
p
a
r
e
d
i
t
s
pe
r
f
o
r
m
a
n
c
e
w
i
t
h
i
pt
a
bl
e
s
d
y
n
a
mi
c
ne
t
wor
k
a
ddr
e
s
s
t
r
a
n
s
l
a
t
i
o
n
(
DN
A
T
)
a
n
d
l
o
o
p
b
a
c
k,
de
pe
n
d
i
ng
o
n
th
e
r
e
que
s
t
f
o
r
c
o
m
m
e
n
t
(
R
F
C
)
2544
pe
r
f
o
r
m
a
n
c
e
s
t
a
n
da
r
d.
T
h
e
s
ugge
s
t
e
d
l
o
a
d
b
a
l
a
n
c
e
r
pe
r
f
o
r
m
e
d
b
e
t
t
e
r
t
h
a
n
i
pt
a
bl
e
s
DN
A
T
,
w
i
t
h
a
s
m
a
ll
d
if
f
e
r
e
nc
e
b
e
t
we
e
n
t
h
e
t
w
o,
b
a
s
e
d
o
n
t
h
e
r
e
s
u
l
t
s
.
T
h
e
r
e
s
e
a
r
c
h
ga
p
o
b
s
e
r
v
e
d
i
n
t
hi
s
r
e
s
e
a
r
c
h
i
s
m
i
gr
a
t
i
o
n
c
o
s
t
.
Do
m
a
n
a
l
e
t
al.
[
16]
i
n
c
l
o
ud
c
o
m
put
i
n
g
e
nvi
r
o
nm
e
n
t
s
,
t
h
e
hy
b
r
i
d
bi
o
-
i
ns
p
i
r
e
d
a
l
go
r
i
t
hm
pr
o
vi
de
s
e
f
f
i
c
i
e
n
t
wo
r
k
s
c
h
e
du
li
ng
a
n
d
r
e
s
o
ur
c
e
m
a
n
a
ge
m
e
n
t
.
I
t
p
r
o
vi
d
e
s
t
a
s
ks
to
VM
s
us
i
n
g
m
o
d
i
f
i
e
d
pa
r
t
i
c
le
s
wa
r
m
o
p
t
i
mi
z
a
t
i
o
n
,
a
n
d
t
h
e
n
a
l
l
o
c
a
t
e
s
r
e
s
o
ur
c
e
s
us
i
n
g
t
h
e
r
e
c
o
m
m
e
n
de
d
hy
b
r
i
d
bi
o
-
i
ns
p
i
r
e
d
a
l
go
r
i
t
hm
(
m
o
d
i
f
i
e
d
pa
r
t
i
c
l
e
s
w
a
r
m
o
pt
i
mi
z
a
t
i
o
n
(
PSO
)
+
m
o
d
i
f
i
e
d
c
a
t
s
wa
r
m
o
pt
i
mi
z
a
t
i
o
n
(
C
S
O
)
)
.
A
c
c
o
r
d
i
n
g
to
pe
e
r
r
e
s
e
a
r
c
h
,
t
h
e
s
ugge
s
t
e
d
hy
b
r
i
d
a
l
go
r
i
t
hm
h
a
s
b
e
t
t
e
r
e
f
f
i
c
ien
c
y
,
r
e
l
i
a
bil
i
t
y
,
a
n
d
l
o
we
r
a
v
e
r
a
ge
r
e
a
c
t
i
o
n
t
i
m
e
s
t
h
a
n
b
e
n
c
hm
a
r
k
a
l
go
r
i
t
hm
s
b
a
s
e
d
o
n
e
x
pe
r
im
e
n
t
a
l
da
t
a
a
n
d
e
f
f
e
c
t
i
ve
c
l
o
ud
r
e
s
o
ur
c
e
u
t
i
li
z
a
t
i
o
n
.
Ga
r
c
i
a
a
n
d
Na
f
a
r
r
a
t
e
[
17
]
s
ugge
s
t
s
us
i
n
g
VM
l
i
ve
m
i
gr
a
t
i
o
n
t
o
pr
o
vi
de
d
i
s
t
r
i
b
ut
e
d
pr
o
bl
e
m
-
s
o
l
vi
ng
s
t
r
a
t
e
gi
e
s
f
o
r
l
o
a
d
m
a
n
a
ge
m
e
n
t
i
n
da
t
a
c
e
n
t
e
r
s
.
T
o
b
a
l
a
n
c
e
a
n
d
r
e
duc
e
h
e
t
e
r
o
ge
n
e
o
us
l
o
a
d
c
o
s
t
s
,
c
o
l
l
a
b
o
r
a
t
i
v
e
a
ge
n
t
s
a
r
e
pr
o
vi
d
e
d
w
i
t
h
a
n
e
n
e
r
g
y
-
a
wa
r
e
c
o
m
bi
na
t
i
o
n
pr
oto
c
o
l
a
n
d
a
l
o
a
d
ba
l
a
n
c
i
ng
pr
oto
c
o
l
.
T
h
e
y
a
r
e
g
i
v
e
n
po
l
i
c
i
e
s
f
o
r
m
i
gr
a
t
i
o
n
,
s
e
l
e
c
t
i
o
n
,
ho
s
t
s
e
l
e
c
t
i
o
n
,
a
n
d
t
ur
ni
ng
o
f
f
/o
n
h
o
s
t
s
.
T
h
e
hi
g
h
e
s
t
r
e
s
o
ur
c
e
c
o
n
s
u
m
pt
i
o
n
im
ba
l
a
n
c
e
i
s
t
r
a
n
s
f
e
r
r
e
d
f
r
o
m
o
v
e
r
lo
a
de
d
s
i
t
e
s
to
un
de
r
u
t
i
li
z
e
d
h
o
s
t
s
ut
i
l
i
z
i
ng
a
n
o
v
e
l
l
o
a
d
b
a
l
a
n
c
i
ng
s
t
r
a
t
e
gy
t
h
a
t
i
s
pr
o
po
s
e
d.
T
h
e
s
e
m
e
t
ho
ds
a
r
e
s
uc
c
e
s
s
f
u
l
a
n
d
e
f
f
i
c
i
e
n
t
,
a
c
c
or
di
n
g
t
o
e
m
p
i
r
i
c
a
l
r
e
s
u
l
t
s
.
T
h
e
r
e
s
e
a
r
c
h
ga
p
o
b
s
e
r
v
e
d
i
n
t
hi
s
r
e
s
e
a
r
c
h
i
s
mi
gr
a
t
i
o
n
c
o
s
t
.
Z
h
a
n
g
e
t
al.
[
18]
w
h
e
n
t
h
e
s
ugge
s
t
e
d
m
e
t
h
o
d
i
s
u
s
e
d
i
ns
t
e
a
d
o
f
o
t
h
e
r
a
ppr
o
a
c
h
e
s
li
ke
r
o
un
d
-
r
o
bi
n
,
mi
n
-
mi
n,
a
n
d
d
i
f
f
e
r
e
n
t
i
a
l
e
v
o
l
ut
i
o
n
,
c
l
o
ud
s
e
r
vi
c
e
pr
o
vi
de
r
c
o
s
t
s
a
r
e
e
f
f
e
c
t
i
v
e
ly
r
e
duc
e
d
a
n
d
us
e
r
t
a
s
k
m
a
ke
s
pa
n
i
s
de
c
r
e
a
s
e
d.
T
hi
s
i
m
pr
o
v
e
d
d
i
f
f
e
r
e
n
t
i
a
l
e
v
o
l
ut
i
o
n
(
I
DE
)
a
ppr
o
a
c
h
a
ddr
e
s
s
e
s
t
h
e
c
h
a
l
l
e
n
g
e
o
f
VM
a
l
l
o
c
a
t
i
o
n
i
n
c
l
o
ud
c
o
m
put
i
n
g
s
y
s
t
e
m
s
.
T
h
e
a
ppr
o
a
c
h
wor
ks
b
e
tt
e
r
t
h
a
n
t
h
e
s
e
a
ppr
o
a
c
h
e
s
,
r
e
s
ul
t
i
ng
i
n
hi
g
h
us
e
r
a
n
d
pr
o
vi
de
r
s
a
t
i
s
f
a
c
t
i
o
n
.
T
he
t
e
c
hni
que
m
a
y
b
e
e
a
s
il
y
t
e
s
t
e
d
wi
t
h
C
l
o
udS
im
,
t
hi
s
i
s
a
c
l
o
ud
s
im
u
l
a
t
i
o
n
too
l
,
a
n
d
i
s
a
pp
l
i
c
a
bl
e
to
i
n
dus
t
r
i
a
l
c
l
o
ud
c
o
m
put
i
ng
s
y
s
t
e
m
s
.
A
dd
y
a
e
t
al.
[
19]
i
n
a
c
l
o
ud
f
e
de
r
a
t
i
o
n
,
a
f
r
a
m
e
w
o
r
k
f
o
r
s
a
f
e
li
ve
VM
m
o
v
e
m
e
n
t
i
s
s
ugg
e
s
t
e
d.
I
t
s
a
s
s
o
c
i
a
t
e
d
c
o
s
t
s
a
r
e
e
x
a
m
i
ne
d
f
o
r
pa
r
a
l
l
e
l
,
e
nh
a
n
c
e
d
t
e
c
h
ni
que
s
.
A
C
l
o
udS
im
s
im
u
l
a
t
o
r
i
s
us
e
d
t
o
m
o
de
l
t
h
e
s
ugge
s
t
e
d
a
r
c
hi
t
e
c
t
ur
e
.
C
o
m
m
u
ni
c
a
t
i
o
n
o
v
e
r
h
e
a
d
,
m
i
gr
a
t
i
o
n
t
i
m
e
,
a
n
d
do
w
n
t
i
m
e
a
r
e
t
h
e
m
e
t
r
i
c
s
t
h
a
t
a
r
e
t
a
ke
n
i
n
t
o
c
o
n
s
i
de
r
a
t
i
o
n
f
o
r
a
s
s
e
s
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w
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t
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up
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800
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Dua
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a
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[
25]
pr
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vi
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3.
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igur
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1.
I
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to
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pr
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l
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.
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hi
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o
n
a
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a
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o
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o
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t
.
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n
f
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hi
s
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l
go
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i
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o
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e
x
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e
n
de
d
i
n
f
ut
ur
e
by
c
o
n
s
i
de
r
i
n
g
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h
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l
e
m
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n
t
s
s
uc
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a
s
a
c
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e
s
s
i
b
il
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t
y
,
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ur
i
t
y
,
a
n
d
s
c
a
l
a
bi
li
t
y
.
RE
F
E
R
E
NC
E
S
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L.
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H
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H
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C
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W
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C
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s
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C
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“
M
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gr
a
ti
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n
-
ba
s
e
d
l
o
a
d
ba
la
nc
e
of
v
ir
tu
a
l
ma
c
h
in
e
s
e
r
ve
r
s
in
c
l
o
ud
c
o
mput
in
g
b
y
l
o
a
d
p
r
e
d
ic
t
i
o
n
us
in
g
ge
n
e
ti
c
-
ba
s
e
d
me
th
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“
A
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s
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ur
c
e
us
a
ge
in
te
ns
it
y
a
w
a
r
e
lo
a
d
ba
la
nc
i
ng
m
e
th
o
d
f
o
r
v
ir
tu
a
l
ma
c
h
in
e
mi
g
r
a
ti
o
n
in
c
l
o
ud
da
ta
c
e
nt
e
r
s
,”
I
E
E
E
T
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ti
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N
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M
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M
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S
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,
“
A
c
o
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e
h
e
ns
i
v
e
s
tu
d
y
of
l
o
a
d
ba
la
nc
in
g
a
ppr
o
a
c
h
e
s
in
th
e
c
l
o
ud
c
omput
in
g
e
n
v
i
r
o
nm
e
nt
a
nd
a
nove
l
f
a
ul
t
t
o
l
e
r
a
nc
e
a
ppr
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a
c
h,”
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E
E
A
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V
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a
l
ma
c
h
in
e
t
r
e
e
t
a
s
k s
c
he
dul
in
g
f
or
l
o
a
d ba
la
nc
in
g
i
n
c
l
o
ud
c
o
mput
in
g,”
I
ndone
s
ia
n
J
our
nal
o
f
E
le
c
tr
ic
al
E
ngi
ne
e
r
in
g
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C
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r
Sc
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I
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h
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e
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p
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ns
e
ti
m
e
of
m
-
l
e
a
r
ni
ng
a
nd
c
l
o
ud
c
o
mput
in
g
e
n
v
ir
o
n
me
nt
s
us
in
g
a
do
mi
na
nt
f
i
r
e
f
l
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a
ppr
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a
d
ba
la
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in
g
f
or
d
y
na
mi
c
v
i
r
tu
a
l
ma
c
hi
ne
r
e
c
o
n
f
ig
ur
a
ti
o
n
ba
s
e
d
o
n
ve
r
ti
c
a
l
a
nd
ho
r
i
z
o
nt
a
l
s
c
a
li
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,”
I
E
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E
T
r
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z
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g
d
y
na
mi
c
l
o
a
d
ba
la
nc
in
g
in
c
l
o
ud
e
n
v
i
r
o
nm
e
nt
s
us
in
g
v
ir
tu
a
l
ma
c
hi
n
e
d
e
pl
oy
m
e
nt
m
o
d
e
ls
,”
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A
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I
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A
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K
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a
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A
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mi
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“
A
hy
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id
m
o
de
l
f
or
l
o
a
d
ba
la
nc
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g
in
c
l
o
ud
us
in
g
f
il
e
t
y
p
e
f
or
ma
tt
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X
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“
A
he
ur
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ti
c
c
lu
s
t
e
r
in
g
-
ba
s
e
d
ta
s
k
de
pl
oy
m
e
nt
a
ppr
o
a
c
h
f
o
r
l
o
a
d
ba
la
nc
in
g
us
in
g
ba
y
e
s
th
e
or
e
m
in
c
l
o
ud
e
n
v
ir
o
n
m
e
nt
,”
I
E
E
E
T
r
ans
ac
ti
ons
on
P
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h
f
or
l
o
a
d
ba
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nc
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g
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N
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la
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vo
uni
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“
A
f
a
i
r
,
d
y
na
mi
c
l
o
a
d
ba
la
nc
e
d
ta
s
k
di
s
tr
ib
ut
io
n
s
tr
a
t
e
g
y
f
or
he
t
e
r
o
g
e
ne
o
us
c
l
o
ud
pl
a
t
f
or
ms
ba
s
e
d
o
n
ma
r
k
ov
pr
oc
e
s
s
mo
d
e
l
in
g,”
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A
lf
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r
h
oo
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“
R
e
in
f
or
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me
n
t
le
a
r
ni
ng
a
ppr
o
a
c
h
f
o
r
o
pt
im
i
z
in
g
c
lo
u
d
r
e
s
o
ur
c
e
u
ti
li
z
a
ti
o
n w
it
h l
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a
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“
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t
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M
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’
ta
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k
de
pl
oy
m
e
nt
s
tr
a
t
e
g
y
f
or
l
o
a
d
ba
la
nc
in
g
in
e
dg
e
c
o
m
put
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A
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bj
e
c
ti
ve
ta
s
k
s
c
he
dul
in
g
o
pt
im
i
z
a
ti
o
n
f
o
r
l
o
a
d
ba
la
nc
in
g
in
c
l
o
ud
c
omput
in
g
e
n
v
i
r
o
n
me
nt
us
in
g
h
y
br
id
a
r
t
i
f
i
c
ia
l
b
e
e
c
o
l
o
n
y
a
lg
or
it
hm
w
it
h
r
e
in
f
or
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r
e
l
o
a
d
ba
la
nc
e
r
f
or
c
l
o
ud
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na
ti
ve
a
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hi
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id
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in
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pi
r
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d
a
lg
or
it
hm
f
or
s
c
h
e
dul
in
g
a
nd
r
e
s
o
u
r
c
e
ma
n
a
g
e
me
n
t
in
c
l
o
ud
e
n
v
ir
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nm
e
nt
,”
I
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l
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a
d
ma
na
ge
m
e
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c
l
o
ud
da
ta
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e
nt
e
r
s
us
in
g
li
v
e
mi
gr
a
ti
o
n
of
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tu
a
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ma
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