<s>
Visual	B-Application
Studio	I-Application
Team	I-Application
System	I-Application
Profiler	I-Application
is	O
a	O
commercial	O
profiler	O
offered	O
by	O
Microsoft	O
,	O
available	O
as	O
part	O
of	O
the	O
Visual	B-Application
Studio	I-Application
Team	I-Application
System	I-Application
(	O
VSTS	O
)	O
suite	O
and	O
the	O
Development	O
Edition	O
of	O
Visual	B-Application
Studio	I-Application
.	O
</s>
<s>
It	O
can	O
work	O
either	O
in	O
sampling	O
mode	O
,	O
in	O
which	O
the	O
snapshot	O
of	O
the	O
program	O
state	O
is	O
recorded	O
at	O
certain	O
intervals	O
,	O
or	O
in	O
instrumentation	B-Application
mode	O
,	O
where	O
statistic	O
gathering	O
probes	O
are	O
injected	O
at	O
entry	O
and	O
exit	O
point	O
of	O
functions	O
.	O
</s>
<s>
While	O
the	O
instrumentation	B-Application
mode	O
allows	O
more	O
accurate	O
statistics	O
to	O
be	O
gathered	O
,	O
it	O
also	O
makes	O
the	O
program	O
run	O
more	O
slowly	O
while	O
being	O
profiled	O
.	O
</s>
<s>
The	O
VSTS	O
profiler	O
helps	O
to	O
optimize	O
performance	O
of	O
code	O
targeted	O
for	O
the	O
.NET	B-Application
Framework	I-Application
platform	O
or	O
natively	B-Language
compiled	O
Visual	B-Application
C++	I-Application
code	O
.	O
</s>
<s>
A	O
standalone	O
version	O
of	O
the	O
VSTS	O
profiler	O
can	O
also	O
be	O
installed	O
from	O
the	O
Visual	B-Application
Studio	I-Application
Team	I-Application
System	I-Application
DVD	O
,	O
and	O
is	O
also	O
available	O
for	O
download	O
on	O
the	O
Microsoft	O
website	O
.	O
</s>
<s>
While	O
the	O
standalone	O
profiler	O
can	O
be	O
installed	O
or	O
used	O
on	O
any	O
platform	O
,	O
the	O
results	O
it	O
collects	O
can	O
only	O
be	O
analyzed	O
in	O
a	O
version	O
of	O
Visual	B-Application
Studio	I-Application
which	O
includes	O
the	O
profiler	O
.	O
</s>
