<s>
TuxOnIce	B-Application
(	O
formerly	O
known	O
as	O
Suspend2	B-Application
)	O
is	O
an	O
implementation	O
of	O
the	O
suspend-to-disk	O
(	O
or	O
hibernate	O
)	O
feature	O
which	O
is	O
available	O
as	O
patches	O
for	O
the	O
2.6	O
Linux	B-Operating_System
kernel	I-Operating_System
.	O
</s>
<s>
During	O
the	O
2.5	O
kernel	B-Operating_System
era	O
,	O
Pavel	O
Machek	O
forked	O
the	O
original	O
out-of-tree	O
version	O
of	O
swsusp	B-Application
(	O
then	O
at	O
approximately	O
beta	O
10	O
)	O
and	O
got	O
it	O
merged	O
into	O
the	O
vanilla	O
kernel	B-Operating_System
,	O
while	O
development	O
continued	O
in	O
the	O
swsusp/Suspend2/TuxOnIce	O
line	O
.	O
</s>
<s>
TuxOnIce	B-Application
includes	O
support	O
for	O
SMP	B-Operating_System
,	O
highmem	O
and	O
preemption	B-Operating_System
.	O
</s>
<s>
Its	O
major	O
advantages	O
over	O
swsusp	B-Application
are	O
:	O
</s>
<s>
Its	O
current	O
modules	O
for	O
writing	O
the	O
image	O
have	O
been	O
designed	O
for	O
speed	O
,	O
combining	O
asynchronous	B-Architecture
I/O	I-Architecture
,	O
multithreading	B-Operating_System
and	O
readahead	O
with	O
LZF	O
compression	O
in	O
its	O
default	O
configuration	O
to	O
read	O
and	O
write	O
the	O
image	O
as	O
fast	O
as	O
hardware	O
is	O
able	O
;	O
</s>
<s>
It	O
has	O
an	O
active	O
community	O
supporting	O
it	O
via	O
a	O
wiki	O
,	O
mailing	O
lists	O
and	O
irc	O
channel	O
(	O
see	O
the	O
TuxOnIce	B-Application
website	O
)	O
;	O
</s>
<s>
It	O
is	O
more	O
flexible	O
and	O
configurable	O
(	O
via	O
a	O
/sys/power/tuxonice	O
interface	O
)	O
;	O
</s>
<s>
Whereas	O
the	O
current	O
swsusp	B-Application
(	O
and	O
uswsusp	B-Application
)	O
implementations	O
support	O
writing	O
the	O
image	O
to	O
one	O
swap	O
device	O
only	O
,	O
TuxOnIce	B-Application
supports	O
multiple	O
devices	O
in	O
any	O
combination	O
of	O
swap	O
files	O
and	O
swap	O
partitions	O
.	O
</s>
<s>
It	O
can	O
store	O
a	O
full	O
image	O
of	O
memory	O
(	O
resulting	O
in	O
a	O
more	O
responsive	O
system	O
post-resume	O
)	O
,	O
while	O
uswsusp	B-Application
and	O
swsusp	B-Application
write	O
at	O
most	O
half	O
the	O
amount	O
of	O
RAM	O
.	O
</s>
<s>
TuxOnIce	B-Application
was	O
originally	O
called	O
'	O
Suspend2	B-Application
 '	O
because	O
after	O
the	O
beta	O
releases	O
(	O
at	O
the	O
time	O
when	O
Pavel	O
forked	O
the	O
code	O
base	O
)	O
,	O
there	O
was	O
a	O
1.0	O
release	O
and	O
then	O
a	O
2.0	O
release	O
.	O
</s>
<s>
The	O
name	O
'	O
Suspend2	B-Application
 '	O
developed	O
as	O
a	O
contraction	O
of	O
'	O
Software	O
Suspend	O
2.x	O
'	O
.	O
</s>
<s>
Some	O
efforts	O
have	O
been	O
made	O
over	O
time	O
to	O
merge	O
TuxOnIce	B-Application
into	O
the	O
vanilla	O
kernel	B-Operating_System
,	O
but	O
these	O
have	O
been	O
opposed	O
by	O
Pavel	O
,	O
primarily	O
(	O
it	O
seems	O
)	O
because	O
Pavel	O
believes	O
much	O
of	O
the	O
suspend-to-disk	O
process	O
can	O
and	O
should	O
be	O
run	O
from	O
userspace	O
(	O
see	O
uswsusp	B-Application
)	O
,	O
while	O
Nigel	O
Cunningham	O
thinks	O
this	O
code	O
belongs	O
in	O
the	O
kernel	B-Operating_System
.	O
</s>
<s>
Nigel	O
has	O
stated	O
both	O
his	O
desire	O
and	O
frustration	O
in	O
getting	O
the	O
TuxOnIce	B-Application
specific	O
features	O
merged	O
back	O
into	O
mainline	O
and	O
is	O
currently	O
not	O
actively	O
pursuing	O
for	O
it	O
.	O
</s>
