<s>
Turnaround	B-General_Concept
time	I-General_Concept
(	O
TAT	O
)	O
is	O
the	O
amount	O
of	O
time	O
taken	O
to	O
complete	O
a	O
process	O
or	O
fulfill	O
a	O
request	O
.	O
</s>
<s>
In	O
computing	O
,	O
turnaround	B-General_Concept
time	I-General_Concept
is	O
the	O
total	O
time	O
taken	O
between	O
the	O
submission	O
of	O
a	O
program/process/thread/task	O
(	O
Linux	B-Application
)	O
for	O
execution	O
and	O
the	O
return	O
of	O
the	O
complete	O
output	O
to	O
the	O
customer/user	O
.	O
</s>
<s>
Turnaround	B-General_Concept
time	I-General_Concept
may	O
simply	O
deal	O
with	O
the	O
total	O
time	O
it	O
takes	O
for	O
a	O
program	O
to	O
provide	O
the	O
required	O
output	O
to	O
the	O
user	O
after	O
the	O
program	O
is	O
started	O
.	O
</s>
<s>
Turnaround	B-General_Concept
time	I-General_Concept
is	O
one	O
of	O
the	O
metrics	O
used	O
to	O
evaluate	O
an	O
operating	O
system	O
's	O
scheduling	O
algorithms	O
.	O
</s>
<s>
In	O
case	O
of	O
batch	O
systems	O
,	O
turnaround	B-General_Concept
time	I-General_Concept
will	O
include	O
time	O
taken	O
in	O
forming	O
batches	O
,	O
batch	O
execution	O
and	O
printing	O
results	O
.	O
</s>
<s>
An	O
example	O
of	O
a	O
"	O
non-computing	O
"	O
context	O
of	O
turnaround	B-General_Concept
time	I-General_Concept
is	O
the	O
time	O
a	O
particular	O
analysis	O
in	O
a	O
laboratory	O
,	O
such	O
as	O
a	O
medical	O
laboratory	O
,	O
other	O
commercial	O
laboratories	O
or	O
a	O
public	O
health	O
laboratory	O
takes	O
to	O
result	O
.	O
</s>
<s>
Laboratories	O
may	O
publish	O
an	O
average	O
turnaround	B-General_Concept
time	I-General_Concept
to	O
inform	O
their	O
clients	O
,	O
e.g.	O
</s>
<s>
A	O
prolonged	O
turnaround	B-General_Concept
time	I-General_Concept
may	O
give	O
the	O
requester	O
a	O
clue	O
that	O
a	O
specimen	O
was	O
not	O
received	O
,	O
that	O
an	O
analysis	O
met	O
with	O
problems	O
within	O
the	O
lab	O
including	O
that	O
the	O
result	O
was	O
unusual	O
and	O
the	O
test	O
was	O
repeated	O
for	O
quality	O
control	O
.	O
</s>
<s>
Lead	O
Time	O
vs	O
Turnaround	B-General_Concept
Time	I-General_Concept
:	O
Lead	O
Time	O
is	O
the	O
amount	O
of	O
time	O
,	O
defined	O
by	O
the	O
supplier	O
or	O
service	O
provider	O
,	O
that	O
is	O
required	O
to	O
meet	O
a	O
customer	O
request	O
or	O
demand	O
.	O
</s>
<s>
Lead-time	O
is	O
basically	O
the	O
time	O
gap	O
between	O
the	O
order	O
placed	O
by	O
the	O
customer	O
and	O
the	O
time	O
when	O
the	O
customer	O
get	O
the	O
final	O
delivery	O
,	O
on	O
the	O
other	O
hand	O
the	O
Turnaround	B-General_Concept
Time	I-General_Concept
is	O
in	O
order	O
to	O
get	O
a	O
job	O
done	O
and	O
deliver	O
the	O
output	O
,	O
once	O
the	O
job	O
is	O
submitted	O
for	O
processing	O
center	O
according	O
to	O
the	O
customer	O
request	O
.	O
</s>
<s>
Turnaround	B-General_Concept
Time	I-General_Concept
vs	O
Response	O
Time	O
:	O
Turnaround	B-General_Concept
time	I-General_Concept
is	O
the	O
amount	O
of	O
time	O
elapsed	O
from	O
the	O
time	O
of	O
submission	O
to	O
the	O
time	O
of	O
completion	O
whereas	O
response	O
time	O
is	O
the	O
average	O
time	O
elapsed	O
from	O
submission	O
until	O
the	O
first	O
response	O
is	O
produced	O
.	O
</s>
<s>
Turnaround	B-General_Concept
Time	I-General_Concept
vs	O
Wait	O
Time	O
:	O
Waiting	O
time	O
is	O
amount	O
of	O
time	O
a	O
process	O
has	O
been	O
waiting	O
in	O
the	O
ready	O
queue	O
.	O
</s>
