<s>
MagLev	B-Language
is	O
an	O
alternative	O
implementation	O
of	O
the	O
Ruby	B-Language
programming	I-Language
language	I-Language
built	O
on	O
the	O
GemStone/S	B-Operating_System
virtual	B-Architecture
machine	I-Architecture
from	O
GemTalk	O
Systems	O
.	O
</s>
<s>
Much	O
of	O
Maglev	B-Language
was	O
set	O
out	O
to	O
be	O
written	O
in	O
Ruby	B-Language
as	O
much	O
as	O
possible	O
,	O
resulting	O
in	O
some	O
collaboration	O
with	O
the	O
Rubinius	O
project	O
.	O
</s>
<s>
As	O
of	O
the	O
first	O
beta	O
release	O
,	O
the	O
project	O
runs	O
RubyGems	O
1.3.5	O
natively	O
,	O
with	O
support	O
for	O
C	B-Language
and	O
Smalltalk	B-Application
extensions	O
.	O
</s>
<s>
MagLev	B-Language
has	O
a	O
distinct	O
VM	B-Architecture
architecture	O
that	O
allows	O
it	O
to	O
share	O
code	O
and	O
data	O
between	O
runtimes	O
and	O
execution	O
cycles	O
through	O
a	O
Ruby	B-Language
API	O
.	O
</s>
<s>
Maglev	B-Language
runs	O
inside	O
an	O
image	O
like	O
Smalltalk	B-Application
,	O
offering	O
transparent	O
object	O
persistence	O
to	O
Ruby	B-Language
objects	O
and	O
classes	O
.	O
</s>
<s>
Maglev	B-Language
uses	O
a	O
process-based	O
concurrency	B-Operating_System
model	O
,	O
mapping	O
Ruby	B-Language
threads	B-Operating_System
to	O
Smalltalk	B-Application
Processes	O
,	O
which	O
are	O
scheduled	O
in	O
the	O
VM	B-Architecture
as	O
green	B-Operating_System
threads	I-Operating_System
.	O
</s>
<s>
Using	O
MagLev	B-Language
should	O
yield	O
performance	O
increases	O
when	O
using	O
Ruby	B-Language
,	O
along	O
with	O
allowing	O
Ruby	B-Language
processes	O
over	O
multiple	O
machines	O
to	O
use	O
the	O
same	O
objects	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
MagLev	B-Language
is	O
installed	O
with	O
RVM	O
,	O
using	O
the	O
following	O
code	O
snippets	O
,	O
copied	O
directly	O
from	O
the	O
maglev	B-Language
github	O
.	O
</s>
<s>
Maglev	B-Language
targets	O
Ruby	B-Language
1.8.7	O
and	O
runs	O
a	O
significant	O
number	O
of	O
RubySpec	B-Language
.	O
</s>
<s>
It	O
supports	O
several	O
C	B-Language
extensions	O
including	O
Nokogiri	B-General_Concept
,	O
JSON	O
and	O
bcrypt	B-Algorithm
.	O
</s>
