<s>
In	O
computer	B-General_Concept
programming	I-General_Concept
,	O
chunking	B-General_Concept
has	O
multiple	O
meanings	O
.	O
</s>
<s>
Typical	O
modern	O
software	O
systems	O
allocate	O
memory	B-General_Concept
dynamically	O
from	O
structures	O
known	O
as	O
heaps	O
.	O
</s>
<s>
Calls	O
are	O
made	O
to	O
heap-management	O
routines	O
to	O
allocate	O
and	O
free	O
memory	B-General_Concept
.	O
</s>
<s>
Heap	B-General_Concept
management	I-General_Concept
involves	O
some	O
computation	O
time	O
and	O
can	O
be	O
a	O
performance	O
issue	O
.	O
</s>
<s>
Chunking	B-General_Concept
refers	O
to	O
strategies	O
for	O
improving	O
performance	O
by	O
using	O
special	O
knowledge	O
of	O
a	O
situation	O
to	O
aggregate	O
related	O
memory-allocation	O
requests	O
.	O
</s>
<s>
For	O
example	O
,	O
if	O
it	O
is	O
known	O
that	O
a	O
certain	O
kind	O
of	O
object	O
will	O
typically	O
be	O
required	O
in	O
groups	O
of	O
eight	O
,	O
instead	O
of	O
allocating	O
and	O
freeing	O
each	O
object	O
individually	O
,	O
making	O
sixteen	O
calls	O
to	O
the	O
heap	B-General_Concept
manager	O
,	O
one	O
could	O
allocate	O
and	O
free	O
an	O
array	O
of	O
eight	O
of	O
the	O
objects	O
,	O
reducing	O
the	O
number	O
of	O
calls	O
to	O
two	O
.	O
</s>
<s>
Chunking	B-General_Concept
is	O
a	O
specific	O
feature	O
of	O
the	O
HTTP	B-Protocol
1.1	I-Protocol
protocol	O
.	O
</s>
<s>
Here	O
,	O
the	O
meaning	O
is	O
the	O
opposite	O
of	O
that	O
used	O
in	O
memory	B-General_Concept
management	I-General_Concept
.	O
</s>
<s>
It	O
refers	O
to	O
a	O
facility	O
that	O
allows	O
inconveniently	O
large	O
messages	O
to	O
be	O
broken	O
into	O
conveniently-sized	O
smaller	O
"	O
chunks	B-General_Concept
"	O
.	O
</s>
<s>
In	O
data	B-General_Concept
deduplication	I-General_Concept
,	O
data	O
synchronization	O
and	O
remote	O
data	O
compression	O
,	O
Chunking	B-General_Concept
is	O
a	O
process	O
to	O
split	O
a	O
file	O
into	O
smaller	O
pieces	O
called	O
chunks	B-General_Concept
by	O
the	O
chunking	B-General_Concept
algorithm	O
.	O
</s>
<s>
It	O
can	O
help	O
to	O
eliminate	O
duplicate	O
copies	O
of	O
repeating	O
data	O
on	O
storage	O
,	O
or	O
reduces	O
the	O
amount	O
of	O
data	O
sent	O
over	O
the	O
network	O
by	O
only	O
selecting	O
changed	O
chunks	B-General_Concept
.	O
</s>
<s>
The	O
Content-Defined	O
Chunking	B-General_Concept
(	O
CDC	O
)	O
algorithm	O
like	O
Rolling	B-Error_Name
hash	I-Error_Name
and	O
its	O
variants	O
have	O
been	O
the	O
most	O
popular	O
data	B-General_Concept
deduplication	I-General_Concept
algorithms	O
for	O
the	O
last	O
15	O
years	O
.	O
</s>
