<s>
The	O
final	O
release	O
of	O
FreeBSD	B-Operating_System
2	O
,	O
2.2.8-RELEASE	O
,	O
was	O
announced	O
on	O
29	O
November	O
1998	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
2.0	O
was	O
the	O
first	O
version	O
of	O
FreeBSD	B-Operating_System
to	O
be	O
claimed	O
legally	O
free	O
of	O
AT&T	O
Unix	B-Application
code	O
with	O
approval	O
of	O
Novell	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
version	O
to	O
be	O
widely	O
used	O
at	O
the	O
beginnings	O
of	O
the	O
spread	O
of	O
Internet	O
servers	B-Application
.	O
</s>
<s>
FreeBSD	B-Operating_System
3.0-RELEASE	O
was	O
announced	O
on	O
16	O
October	O
1998	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
3.0	O
was	O
the	O
first	O
branch	O
able	O
to	O
support	O
symmetric	B-Operating_System
multiprocessing	I-Operating_System
(	O
SMP	B-Operating_System
)	O
systems	O
,	O
using	O
a	O
Giant	B-Operating_System
lock	I-Operating_System
and	O
marked	O
the	O
transition	O
from	O
a.out	O
to	O
ELF	O
executables	O
.	O
</s>
<s>
USB	B-Protocol
support	O
was	O
first	O
introduced	O
with	O
FreeBSD	B-Operating_System
3.1	O
,	O
and	O
the	O
first	O
Gigabit	O
network	O
cards	O
were	O
supported	O
in	O
3.2-RELEASE	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
4	O
was	O
lauded	O
for	O
its	O
stability	O
,	O
was	O
a	O
favorite	O
operating	O
system	O
for	O
ISPs	O
and	O
web	O
hosting	O
providers	O
during	O
the	O
first	O
dot-com	O
bubble	O
,	O
and	O
is	O
widely	O
regarded	O
as	O
one	O
of	O
the	O
most	O
stable	O
and	O
high-performance	O
operating	O
systems	O
of	O
the	O
whole	O
Unix	B-Application
lineage	O
.	O
</s>
<s>
Among	O
the	O
new	O
features	O
of	O
FreeBSD	B-Operating_System
4	O
,	O
kqueue(2 )	O
was	O
introduced	O
(	O
which	O
is	O
now	O
part	O
of	O
other	O
major	O
BSD	O
systems	O
)	O
and	O
Jails	B-Language
,	O
a	O
way	O
of	O
running	O
processes	O
in	O
separate	O
environments	O
.	O
</s>
<s>
Version	O
4.8	O
was	O
forked	B-Application
by	O
Matt	O
Dillon	O
to	O
create	O
DragonFly	B-Application
BSD	I-Application
.	O
</s>
<s>
After	O
almost	O
three	O
years	O
of	O
development	O
,	O
the	O
first	O
5.0-RELEASE	O
in	O
January	O
2003	O
was	O
widely	O
anticipated	O
,	O
featuring	O
support	O
for	O
advanced	O
multiprocessor	O
and	O
application	O
threading	B-Operating_System
,	O
and	O
for	O
the	O
UltraSPARC	B-General_Concept
and	O
IA-64	B-General_Concept
platforms	O
.	O
</s>
<s>
The	O
largest	O
architectural	O
development	O
in	O
FreeBSD	B-Operating_System
5	O
was	O
a	O
major	O
change	O
in	O
the	O
low-level	O
kernel	O
locking	O
mechanisms	O
to	O
enable	O
better	O
symmetric	B-Operating_System
multi-processor	I-Operating_System
(	O
SMP	B-Operating_System
)	O
support	O
.	O
</s>
<s>
This	O
released	O
much	O
of	O
the	O
kernel	O
from	O
the	O
MP	O
lock	O
,	O
which	O
is	O
sometimes	O
called	O
the	O
Giant	B-Operating_System
lock	I-Operating_System
.	O
</s>
<s>
Other	O
major	O
changes	O
included	O
an	O
M:N	O
native	O
threading	B-Operating_System
implementation	O
called	O
Kernel	O
Scheduled	O
Entities	O
(	O
KSE	O
)	O
.	O
</s>
<s>
In	O
principle	O
this	O
is	O
similar	O
to	O
Scheduler	B-Operating_System
Activations	I-Operating_System
.	O
</s>
<s>
Starting	O
with	O
FreeBSD	B-Operating_System
5.3	O
,	O
KSE	O
was	O
the	O
default	O
threading	B-Operating_System
implementation	O
until	O
it	O
was	O
replaced	O
with	O
a	O
1:1	O
implementation	O
in	O
FreeBSD	B-Operating_System
7.0	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
5	O
also	O
significantly	O
changed	O
the	O
block	O
I/O	O
layer	O
by	O
implementing	O
the	O
GEOM	B-Application
modular	O
disk	O
I/O	O
request	O
transformation	O
framework	O
contributed	O
by	O
Poul-Henning	O
Kamp	O
.	O
</s>
<s>
GEOM	B-Application
enables	O
the	O
simple	O
creation	O
of	O
many	O
kinds	O
of	O
functionality	O
,	O
such	O
as	O
mirroring	B-General_Concept
(	O
gmirror	O
)	O
,	O
encryption	O
(	O
GBDE	B-Application
and	O
GELI	B-Application
)	O
.	O
</s>
<s>
While	O
the	O
early	O
versions	O
from	O
the	O
5.x	O
were	O
not	O
much	O
more	O
than	O
developer	O
previews	O
,	O
with	O
pronounced	O
instability	O
,	O
the	O
5.4	O
and	O
5.5	O
releases	O
of	O
FreeBSD	B-Operating_System
confirmed	O
the	O
technologies	O
introduced	O
in	O
the	O
FreeBSD	B-Operating_System
5.x	O
branch	O
had	O
a	O
future	O
in	O
highly	O
stable	O
and	O
high-performing	O
releases	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
6.0	O
was	O
released	O
on	O
4	O
November	O
2005	O
.	O
</s>
<s>
The	O
final	O
FreeBSD	B-Operating_System
6	O
release	O
was	O
6.4	O
,	O
on	O
11	O
November	O
2008	O
.	O
</s>
<s>
These	O
versions	O
extended	O
work	O
on	O
SMP	B-Operating_System
and	O
threading	B-Operating_System
optimization	O
along	O
with	O
more	O
work	O
on	O
advanced	O
802.11	O
functionality	O
,	O
TrustedBSD	O
security	O
event	O
auditing	O
,	O
significant	O
network	O
stack	O
performance	O
enhancements	O
,	O
a	O
fully	O
preemptive	O
kernel	O
and	O
support	O
for	O
hardware	O
performance	O
counters	O
(	O
HWPMC	O
)	O
.	O
</s>
<s>
The	O
main	O
accomplishments	O
of	O
these	O
releases	O
include	O
removal	O
of	O
the	O
Giant	B-Operating_System
lock	I-Operating_System
from	O
VFS	B-Application
,	O
implementation	O
of	O
a	O
better-performing	O
optional	O
libthr	O
library	B-Library
with	O
1:1	O
threading	B-Operating_System
and	O
the	O
addition	O
of	O
a	O
Basic	B-Device
Security	I-Device
Module	I-Device
(	O
BSM	O
)	O
audit	O
implementation	O
called	O
OpenBSM	B-Device
,	O
which	O
was	O
created	O
by	O
the	O
TrustedBSD	O
Project	O
(	O
based	O
on	O
the	O
BSM	O
implementation	O
found	O
in	O
Apple	O
's	O
open	B-Application
source	I-Application
Darwin	B-Operating_System
)	O
and	O
released	O
under	O
a	O
BSD-style	B-Operating_System
license	I-Operating_System
.	O
</s>
<s>
FreeBSD	B-Operating_System
7.0	O
was	O
released	O
on	O
27	O
February	O
2008	O
.	O
</s>
<s>
The	O
final	O
FreeBSD	B-Operating_System
7	O
release	O
was	O
7.4	O
,	O
on	O
24	O
February	O
2011	O
.	O
</s>
<s>
New	O
features	O
included	O
SCTP	B-Protocol
,	O
UFS	B-Operating_System
journaling	B-Application
,	O
an	O
experimental	O
port	O
of	O
Sun	O
's	O
ZFS	B-Application
file	O
system	O
,	O
GCC4	B-Application
,	O
improved	O
support	O
for	O
the	O
ARM	B-Architecture
architecture	I-Architecture
,	O
jemalloc	O
(	O
a	O
memory	B-Language
allocator	I-Language
optimized	O
for	O
parallel	B-Operating_System
computation	I-Operating_System
,	O
which	O
was	O
ported	O
to	O
Firefox	B-Language
3	I-Language
)	O
,	O
and	O
major	O
updates	O
and	O
optimizations	O
relating	O
to	O
network	O
,	O
audio	O
,	O
and	O
SMP	B-Operating_System
performance	O
.	O
</s>
<s>
Benchmarks	O
showed	O
significant	O
performance	O
improvements	O
compared	O
to	O
previous	O
FreeBSD	B-Operating_System
releases	O
as	O
well	O
as	O
Linux	B-Application
.	O
</s>
<s>
The	O
new	O
ULE	B-Operating_System
scheduler	I-Operating_System
was	O
much	O
improved	O
but	O
a	O
decision	O
was	O
made	O
to	O
ship	O
the	O
7.0	O
release	O
with	O
the	O
older	O
4BSD	O
scheduler	O
,	O
leaving	O
ULE	O
as	O
a	O
kernel	O
compile-time	O
tunable	O
.	O
</s>
<s>
In	O
FreeBSD	B-Operating_System
7.1	O
ULE	O
was	O
the	O
default	O
for	O
the	O
i386	B-General_Concept
and	O
AMD64	B-Device
architectures	O
.	O
</s>
<s>
DTrace	B-Application
support	O
was	O
integrated	O
in	O
version	O
7.1	O
,	O
and	O
NetBSD	B-Device
and	O
FreeBSD	B-Operating_System
7.2	O
brought	O
support	O
for	O
multi-IPv4/IPv6	O
jails	B-Language
.	O
</s>
<s>
Code	O
supporting	O
the	O
DEC	B-Device
Alpha	I-Device
architecture	B-General_Concept
(	O
supported	O
since	O
FreeBSD	B-Operating_System
4.0	O
)	O
was	O
removed	O
in	O
FreeBSD	B-Operating_System
7.0	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
8.0	O
was	O
officially	O
released	O
on	O
25	O
November	O
2009	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
8	O
was	O
branched	B-General_Concept
from	O
the	O
trunk	O
in	O
August	O
2009	O
.	O
</s>
<s>
It	O
features	O
superpages	B-General_Concept
,	O
Xen	B-Operating_System
DomU	B-Operating_System
support	O
,	O
network	O
stack	O
virtualization	O
,	O
stack-smashing	O
protection	O
,	O
TTY	O
layer	O
rewrite	O
,	O
much	O
updated	O
and	O
improved	O
ZFS	B-Application
support	O
,	O
a	O
new	O
USB	B-Protocol
stack	O
with	O
USB	B-Protocol
3.0	O
and	O
xHCI	O
support	O
added	O
in	O
FreeBSD	B-Operating_System
8.2	O
,	O
multicast	O
updates	O
including	O
IGMPv3	B-Protocol
,	O
a	O
rewritten	O
NFS	B-Protocol
client/server	O
introducing	O
NFSv4	O
,	O
and	O
AES	B-Algorithm
acceleration	I-Algorithm
on	O
supported	O
Intel	O
CPUs	O
(	O
added	O
in	O
FreeBSD	B-Operating_System
8.2	O
)	O
.	O
</s>
<s>
Inclusion	O
of	O
improved	O
device	O
mmap( )	O
extensions	O
enables	O
implementation	O
of	O
a	O
64-bit	O
Nvidia	O
display	O
driver	O
for	O
the	O
x86-64	B-Device
platform	O
.	O
</s>
<s>
A	O
pluggable	O
congestion	O
control	O
framework	O
,	O
and	O
support	O
for	O
the	O
ability	O
to	O
use	O
DTrace	B-Application
for	O
applications	O
running	O
under	O
Linux	B-General_Concept
emulation	I-General_Concept
were	O
added	O
in	O
FreeBSD	B-Operating_System
8.3	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
8.4	O
,	O
released	O
on	O
7	O
June	O
2013	O
,	O
was	O
the	O
final	O
release	O
from	O
the	O
FreeBSD	B-Operating_System
8	O
series	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
9.0	O
was	O
released	O
on	O
12	O
January	O
2012	O
.	O
</s>
<s>
Key	O
features	O
of	O
the	O
release	O
include	O
a	O
new	O
installer	O
(	O
bsdinstall	O
)	O
,	O
UFS	B-Operating_System
journaling	B-Application
,	O
ZFS	B-Application
version	O
28	O
,	O
userland	O
DTrace	B-Application
,	O
NFSv4-compatible	O
NFS	B-Protocol
server	O
and	O
client	O
,	O
USB	B-Protocol
3.0	O
support	O
,	O
support	O
for	O
running	O
on	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
,	O
Capsicum	O
sandboxing	O
,	O
and	O
LLVM	B-Application
3.0	O
in	O
the	O
base	O
system	O
.	O
</s>
<s>
The	O
kernel	O
and	O
base	O
system	O
could	O
be	O
built	O
with	O
Clang	B-Application
,	O
but	O
FreeBSD	B-Operating_System
9.0	O
still	O
used	O
GCC4.2	O
by	O
default	O
.	O
</s>
<s>
The	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
video	O
game	O
console	O
uses	O
a	O
derived	O
version	O
of	O
FreeBSD	B-Operating_System
9.0	O
,	O
which	O
Sony	O
Computer	O
Entertainment	O
dubbed	O
"	O
Orbis	O
OS	O
"	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
9.1	O
was	O
released	O
on	O
31	O
December	O
2012	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
9.2	O
was	O
released	O
on	O
30	O
September	O
2013	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
9.3	O
was	O
released	O
on	O
16	O
July	O
2014	O
.	O
</s>
<s>
On	O
20	O
January	O
2014	O
,	O
the	O
FreeBSD	B-Operating_System
Release	O
Engineering	O
Team	O
announced	O
the	O
availability	O
of	O
FreeBSD	B-Operating_System
10.0-RELEASE	O
.	O
</s>
<s>
Key	O
features	O
include	O
the	O
deprecation	O
of	O
GCC	B-Application
in	O
favor	O
of	O
Clang	B-Application
,	O
a	O
new	O
iSCSI	B-Protocol
implementation	O
,	O
VirtIO	O
drivers	O
for	O
out-of-the-box	O
KVM	B-Application
support	O
,	O
and	O
a	O
FUSE	B-Application
implementation	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
10.1-RELEASE	O
was	O
announced	O
14	O
November	O
2014	O
,	O
and	O
was	O
supported	O
for	O
an	O
extended	O
term	O
until	O
31	O
December	O
2016	O
.	O
</s>
<s>
On	O
10	O
October	O
2016	O
,	O
the	O
FreeBSD	B-Operating_System
Release	O
Engineering	O
Team	O
announced	O
the	O
availability	O
of	O
FreeBSD	B-Operating_System
11.0-RELEASE	O
.	O
</s>
<s>
FreeBSD	B-Operating_System
12.0-RELEASE	O
was	O
announced	O
in	O
December	O
2018	O
.	O
</s>
<s>
The	O
following	O
table	O
presents	O
a	O
version	O
release	O
history	O
for	O
the	O
FreeBSD	B-Operating_System
operating	O
system	O
.	O
</s>
<s>
Version	O
Release	O
date	O
Supported	O
until	O
Significant	O
changes	O
1	O
November	O
1993	O
May	O
1994	O
fix	O
some	O
outstanding	O
bugs	O
from	O
import	O
of	O
386BSD	B-Operating_System
,	O
addition	O
of	O
some	O
ported	O
applications	O
(	O
XFree86	B-Device
,	O
XView	B-Library
,	O
InterViews	O
,	O
elm	B-Application
,	O
nntp	B-Protocol
)	O
July	O
1994	O
22	O
November	O
1994	O
replace	O
code	O
base	O
with	O
BSD-Lite	O
4.4	O
(	O
to	O
satisfy	O
terms	O
of	O
the	O
USL	B-Operating_System
v	I-Operating_System
.	I-Operating_System
BSDi	I-Operating_System
lawsuit	O
settlement	O
)	O
,	O
new	O
installer	O
,	O
new	O
boot	O
manager	O
,	O
support	O
for	O
more	O
filesystems	O
(	O
MS-DOS	O
,	O
unionfs	B-Application
,	O
kernfs	B-Application
)	O
,	O
64-bit	O
offsets	O
for	O
large	O
filesystems	O
,	O
loadable	O
filesystems	O
,	O
imported	O
loadable	O
kernel	O
modules	O
from	O
NetBSD	B-Device
10	O
June	O
1995	O
revamped	O
VM	O
system	O
,	O
full	O
NIS	B-Operating_System
client	O
and	O
server	O
support	O
,	O
transaction	O
TCP	B-Protocol
support	O
,	O
ISDN	B-Protocol
support	O
,	O
support	O
for	O
FDDI	B-Protocol
and	O
Fast	B-Protocol
Ethernet	I-Protocol
(	O
100Mbit	O
)	O
adapters	O
,	O
multi-lingual	O
documentation	O
,	O
FreeBSD	B-Application
Ports	I-Application
bundled	O
with	O
installation	O
media	O
19	O
November	O
1995	O
July	O
1996	O
bug	O
and	O
security	O
fixes	O
,	O
PCI	O
bus	O
probing	O
,	O
addition	O
of	O
some	O
drivers	O
December	O
1996	O
bug	O
and	O
security	O
fixes	O
,	O
improvements	O
to	O
installation	O
February	O
1997	O
bug	O
and	O
security	O
fixes	O
March	O
1997	O
NFSv3	B-Protocol
,	O
replaced	O
BSD	O
malloc	B-Language
with	O
phkmalloc	B-Language
,	O
Linux	B-General_Concept
emulation	I-General_Concept
with	O
ELF	O
,	O
man	B-Protocol
section	I-Protocol
9	I-Protocol
for	O
kernel	O
routines	O
April	O
1997	O
Bugfix	O
release	O
to	O
replace	O
2.2	O
.	O
</s>
<s>
May	O
1997	O
NFSv3	B-Protocol
made	O
default	O
,	O
virtual	O
FTP	O
hosting	O
22	O
October	O
1997	O
update	O
support	O
for	O
Cyrix	O
and	O
AMD	B-Device
processors	I-Device
,	O
new	O
VGA	B-Protocol
library	B-Library
25	O
March	O
1998	O
ATAPI	O
floppy	O
drives	O
,	O
improved	O
Linux	B-General_Concept
emulation	I-General_Concept
,	O
new	O
sound	O
driver	O
,	O
new	O
Plug	O
and	O
Play	O
(	O
PnP	O
)	O
support	O
22	O
July	O
1998	O
FAT32	B-Application
support	O
,	O
update	O
to	O
PC98	O
architecture	B-General_Concept
29	O
November	O
1998	O
Dummynet	B-Protocol
traffic	O
shaping	O
,	O
bridging	O
on	O
multiple	O
interfaces	O
,	O
support	O
use	O
of	O
IDE	B-Protocol
drives	I-Protocol
larger	O
than	O
8GiB	O
16	O
October	O
1998	O
symmetric	B-Operating_System
multiprocessing	I-Operating_System
(	O
SMP	B-Operating_System
)	O
,	O
CAM	O
(	O
Common	O
Access	O
Method	O
)	O
SCSI	B-Architecture
system	O
,	O
ELF	O
executables	O
,	O
secure	O
RPC	O
,	O
ATAPI/IDE	O
CD	O
burner	O
and	O
tape	O
drive	O
support	O
,	O
VESA	O
video	O
modes	O
,	O
Perl	B-Language
5	O
replaced	O
Perl	B-Language
4	O
in	O
base	O
system	O
,	O
KerberosIV	O
15	O
February	O
1999	O
initial	O
USB	B-Protocol
device	O
support	O
,	O
Pluggable	B-Application
Authentication	I-Application
Modules	I-Application
(	O
PAM	O
)	O
17	O
May	O
1999	O
addition	O
of	O
Internet	O
Software	O
Consortium	O
DHCP	O
client	O
to	O
base	O
,	O
expanded	O
USB	B-Protocol
device	O
support	O
,	O
improved	O
filesystem	O
support	O
(	O
direct	O
access	O
to	O
NTFS	O
,	O
Joliet	O
extensions	O
for	O
ISO	O
9660	O
)	O
17	O
September	O
1999	O
improved	O
USB	B-Protocol
support	O
,	O
major	O
vinum	O
updates	O
,	O
improvements	O
to	O
IPFW	B-Protocol
,	O
Advanced	B-Device
power	I-Device
management	I-Device
,	O
Berkeley	B-Protocol
Packet	I-Protocol
Filter	I-Protocol
enabled	O
by	O
default	O
,	O
addition	O
of	O
many	O
drivers	O
20	O
December	O
1999	O
Netgraph	B-Device
,	O
RAID-5	B-General_Concept
support	O
in	O
vinum	O
,	O
ICMP	B-Protocol
and	O
other	O
security	O
fixes	O
24	O
June	O
2000	O
substantial	O
vinum	O
update	O
,	O
audio	O
mixer	O
updated	O
,	O
HTTP	O
installation	O
option	O
14	O
March	O
2000	O
addition	O
of	O
jails	B-Language
,	O
IPv6	B-Protocol
support	O
and	O
IPsec	B-Protocol
with	O
KAME	B-Application
(	O
applications	O
were	O
also	O
updated	O
to	O
support	O
IPv6	B-Protocol
)	O
,	O
OpenSSH	B-Language
integrated	O
into	O
the	O
base	O
system	O
,	O
new	O
ATA/ATAPI	B-Protocol
driver	O
(	O
for	O
all	O
ATA	B-Protocol
compliant	O
disks	O
and	O
ATAPI	O
CDROM	O
,	O
CD-R	O
,	O
CD-RW	O
,	O
DVD-ROM	O
,	O
DVD-RAM	O
,	O
LS120	O
,	O
ZIP	O
and	O
tape	O
drives	O
)	O
,	O
emulator	O
for	O
SVR4	O
binary	O
files	O
,	O
burncd	O
,	O
USB	B-Protocol
ethernet	O
adapter	O
support	O
,	O
accept( )	O
filters	O
,	O
telnet	B-Protocol
encryption	O
27	O
July	O
2000	O
Kqueue	B-Application
,	O
improved	O
IPsec	B-Protocol
,	O
expanded	O
DEC	B-Device
Alpha	I-Device
support	O
,	O
support	O
for	O
USB	B-Protocol
devices	O
in	O
default	O
installation	O
27	O
September	O
2000	O
virtual	O
Ethernet	O
device	O
driver	O
for	O
bridged	O
configurations	O
,	O
ATA100	O
controller	O
support	O
21	O
November	O
2000	O
basic	O
USB	B-Protocol
scanner	O
support	O
,	O
USB	B-Protocol
modem	O
support	O
,	O
bug	O
fixes	O
for	O
buffer	O
overflows	O
,	O
FreeBSD	B-Application
Ports	I-Application
restructured	O
20	O
April	O
2001	O
sound	O
driver	O
updates	O
,	O
TCP	B-Protocol
bug	O
fixes	O
,	O
kqueue	B-Application
extended	O
to	O
the	O
device	O
layer	O
20	O
September	O
2001	O
detection	O
for	O
new	O
processors	O
(	O
Transmeta	B-General_Concept
Crusoe	I-General_Concept
et	O
al	O
.	O
</s>
<s>
)	O
,	O
support	O
for	O
Streaming	B-General_Concept
SIMD	I-General_Concept
Extensions	I-General_Concept
(	O
SSE	O
)	O
,	O
kernel	O
support	O
for	O
smbfs	B-Operating_System
(	O
CIFS	B-Operating_System
)	O
,	O
update	O
to	O
IPv6	B-Protocol
stack	O
29	O
January	O
2002	O
31	O
December	O
2002	O
TCP	B-Protocol
improvements	O
(	O
throughput	O
,	O
performance	O
,	O
and	O
Denial-of-service	O
mitigation	O
)	O
,	O
Soft	B-Application
updates	I-Application
enabled	O
by	O
default	O
,	O
improved	O
Linux	B-General_Concept
emulation	I-General_Concept
,	O
boot	O
loader	O
updated	O
to	O
boot	O
from	O
filesystems	O
with	O
16K	O
disk	O
blocks	O
(	O
from	O
8K	O
)	O
15	O
June	O
2002	O
May	O
2003	O
update	O
XFree86	B-Device
to	O
version	O
4.2.0	O
,	O
driver	O
additions	O
and	O
updates	O
15	O
August	O
2002	O
May	O
2003	O
fixed	O
ATA-related	O
problems	O
,	O
fix	O
security-related	O
problems	O
10	O
October	O
2002	O
December	O
2003	O
new	O
USB	B-Protocol
devices	O
and	O
disk	O
controllers	O
,	O
IPFW	B-Protocol
version	O
2	O
(	O
disabled	O
by	O
default	O
)	O
3	O
April	O
2003	O
31	O
March	O
2004	O
basic	O
FireWire	B-Protocol
and	O
HyperThreading	B-Operating_System
support	O
,	O
in-kernel	O
cryptographic	O
framework	O
imported	O
from	O
OpenBSD	B-Operating_System
,	O
ata	B-Protocol
driver	O
support	O
for	O
accessing	O
ATA	B-Protocol
devices	O
as	O
SCSI	B-Architecture
devices	O
using	O
Common	O
Access	O
Method	O
(	O
CAM	O
)	O
28	O
October	O
2003	O
31	O
October	O
2004	O
Physical	B-General_Concept
Address	I-General_Concept
Extensions	I-General_Concept
,	O
IPFW	B-Protocol
fixes	O
27	O
May	O
2004	O
May	O
2006	O
USB2	O
support	O
,	O
added	O
ports/CHANGES	O
and	O
ports/UPDATING	O
to	O
FreeBSD	B-Application
Ports	I-Application
25	O
January	O
2005	O
31	O
January	O
2007	O
update	O
XFree86	B-Device
to	O
version	O
4.4.0	O
,	O
implementation	O
of	O
per-interface	O
polling	O
for	O
network	O
interfaces	O
14	O
January	O
2003	O
30	O
June	O
2003	O
support	O
for	O
UltraSPARC	B-General_Concept
and	O
IA-64	B-General_Concept
processors	O
,	O
SMP	B-Operating_System
support	O
via	O
changes	O
to	O
kernel	O
locking	O
(	O
release	O
most	O
of	O
kernel	O
from	O
the	O
Giant	B-Operating_System
lock	I-Operating_System
)	O
,	O
GEOM	B-Application
,	O
Kernel	O
Scheduled	O
Entities	O
,	O
Mandatory	O
Access	O
Control	O
imported	O
from	O
TrustedBSD	O
,	O
background	O
fsck	B-Device
,	O
Bluetooth	B-Protocol
,	O
ACPI	B-Device
,	O
CardBus	O
,	O
devfs	O
,	O
UFS2	B-Operating_System
support	O
,	O
support	O
for	O
Universal	O
Disk	O
Format	O
,	O
drivers	O
for	O
Direct	B-Application
Rendering	I-Application
Infrastructure	I-Application
(	O
DRI	O
)	O
,	O
Pluggable	B-Application
Authentication	I-Application
Modules	I-Application
,	O
remove	O
support	O
for	O
80386	B-General_Concept
in	O
default	O
kernel	O
,	O
removal	O
of	O
kernfs	B-Application
and	O
UUCP	B-Protocol
,	O
traditional	O
BSD	O
games	O
moved	O
from	O
base	O
to	O
FreeBSD	B-Application
Ports	I-Application
,	O
Perl	B-Language
removed	O
from	O
base	O
system	O
,	O
imported	O
rc.d	O
framework	O
from	O
NetBSD	B-Device
,	O
addition	O
of	O
BSDPAN	O
,	O
cdboot	O
boot	O
loader	O
used	O
by	O
default	O
9	O
June	O
2003	O
February	O
2004	O
experimental	O
support	O
for	O
AMD64	B-Device
,	O
experimental	O
1:1	O
and	O
M:N	O
thread	B-Operating_System
libraries	O
for	O
multithreaded	O
processing	O
,	O
experimental	O
Name	B-Protocol
Service	I-Protocol
Switch	I-Protocol
,	O
Physical	B-General_Concept
Address	I-General_Concept
Extensions	I-General_Concept
,	O
GEOM	B-Application
and	O
devfs	O
mandatory	O
,	O
IPv6	B-Protocol
support	O
in	O
Linux	B-General_Concept
emulator	I-General_Concept
,	O
experimental	O
ULE	B-Operating_System
scheduler	I-Operating_System
,	O
removed	O
support	O
for	O
Xerox	B-Protocol
Network	I-Protocol
Systems	I-Protocol
,	O
CAM	O
layer	O
support	O
for	O
devices	O
with	O
more	O
than	O
232	O
blocks	O
,	O
removed	O
historic	O
BSD	O
boot	O
scripts	O
,	O
update	O
XFree86	B-Device
to	O
version	O
4.3.0	O
,	O
start	O
of	O
Danish	O
document	O
translations	O
9	O
January	O
2004	O
31	O
December	O
2004	O
AMD64	B-Device
a	O
Tier1	O
supported	O
architecture	B-General_Concept
,	O
updated	O
swap	O
pager	O
,	O
Protocol	B-Protocol
Independent	I-Protocol
Multicast	I-Protocol
,	O
updates	O
to	O
IPv6	B-Protocol
,	O
IPSec	B-Protocol
and	O
Bluetooth	B-Protocol
,	O
major	O
changes	O
to	O
ata	B-Protocol
driver	O
(	O
removed	O
from	O
Giant	B-Operating_System
lock	I-Operating_System
)	O
,	O
NFSv4	O
client	O
support	O
,	O
start	O
of	O
Turkish	O
document	O
translation	O
,	O
remove	O
floating	O
point	O
emulation	O
support	O
for	O
i386	B-General_Concept
,	O
new	O
or	O
improved	O
IDE	O
,	O
SATA	O
,	O
and	O
802.11a/b/g	O
device	O
drivers	O
,	O
experimental	O
support	O
for	O
multithreaded	O
filtering	O
and	O
forwarding	O
of	O
IP	O
traffic	O
25	O
February	O
2004	O
31	O
December	O
2004	O
bugfix	O
release	O
,	O
improved	O
ATA/IDE	B-Protocol
and	O
SATA	O
handling	O
6	O
November	O
2004	O
31	O
October	O
2006	O
ALTQ	B-Algorithm
,	O
multi-threaded	B-Operating_System
and	O
reentrant	O
network	O
and	O
socket	O
subsystems	O
,	O
addition	O
of	O
new	O
debugging	O
framework	O
KDB	B-Operating_System
,	O
dynamic	O
and	O
static	O
linker	O
support	O
for	O
Thread	B-Operating_System
Local	O
Storage	O
,	O
import	O
pf	B-Protocol
from	O
OpenBSD	B-Operating_System
,	O
binary	O
compatibility	O
interface	O
for	O
native	O
execution	O
of	O
NDIS	B-Application
drivers	O
,	O
replace	O
XFree86	B-Device
with	O
X.org	B-Operating_System
6.7	O
,	O
sound	O
card	O
driver	O
reorganization	O
,	O
cryptography	O
enabled	O
by	O
default	O
in	O
base	O
9	O
May	O
2005	O
31	O
October	O
2006	O
import	O
Common	B-Application
Address	I-Application
Redundancy	I-Application
Protocol	I-Application
from	O
OpenBSD	B-Operating_System
25	O
May	O
2006	O
31	O
May	O
2008	O
both	O
cores	O
of	O
dual	O
core	O
processors	O
made	O
available	O
for	O
use	O
by	O
default	O
in	O
SMP-enabled	O
kernels	O
4	O
November	O
2005	O
31	O
January	O
2007	O
experimental	O
support	O
for	O
PowerPC	B-Architecture
,	O
WPA	O
wireless	O
security	O
,	O
more	O
wireless	B-General_Concept
networking	I-General_Concept
adapter	O
drivers	O
,	O
complete	O
support	O
for	O
802.11g	O
,	O
802.11i	B-Protocol
,	O
802.1x	O
and	O
WME/WMM	B-General_Concept
,	O
filesystem	O
and	O
direct	O
disk	O
access	O
performance	O
improvements	O
8	O
May	O
2006	O
31	O
May	O
2008	O
keyboard	O
multiplexer	O
,	O
filesystem	O
stability	O
fixes	O
,	O
automatic	O
configuration	O
for	O
many	O
Bluetooth	B-Protocol
devices	O
,	O
drivers	O
for	O
ethernet	O
,	O
SAS	O
and	O
SATA	O
RAID	O
controllers	O
15	O
January	O
2007	O
31	O
May	O
2008	O
support	O
for	O
Xbox	B-Application
architecture	B-General_Concept
,	O
OpenBSM	B-Device
,	O
security	O
event	O
auditing	O
,	O
IPFW	B-Protocol
packet	O
tagging	O
,	O
freebsd-update	O
(	O
binary	O
updates	O
for	O
security	O
fixes	O
and	O
errata	O
patches	O
)	O
,	O
OpenIPMI	O
(	O
see	O
Intelligent	O
Platform	O
Management	O
Interface	O
)	O
18	O
January	O
2008	O
31	O
January	O
2010	O
X.org	B-Operating_System
updated	O
to	O
version	O
7.3	O
,	O
reimplementation	O
of	O
UnionFS	B-Application
,	O
addition	O
of	O
upgrade	O
command	O
to	O
freebsd-update	O
28	O
November	O
2008	O
30	O
November	O
2010	O
support	O
for	O
Camellia	B-Algorithm
cipher	I-Algorithm
,	O
boot	O
loader	O
changes	O
(	O
enabling	O
booting	O
from	O
USB	B-Protocol
devices	O
,	O
and	O
GPT-labeled	O
devices	O
with	O
GPT-enabled	O
BIOSes	O
)	O
,	O
malloc	B-Language
buffer	O
corruption	O
protection	O
,	O
DVD	O
install	O
ISO	O
images	O
for	O
AMD64	B-Device
and	O
i386	B-General_Concept
27	O
February	O
2008	O
30	O
April	O
2009	O
ZFS	B-Application
and	O
GPT	B-Application
,	O
reference	O
implementation	O
of	O
SCTP	B-Protocol
,	O
add	O
support	O
for	O
ARM	B-Architecture
architecture	I-Architecture
,	O
support	O
for	O
Intel	O
High	O
Definition	O
Audio	O
(	O
HDA	O
)	O
,	O
replacing	O
phkmalloc	B-Language
with	O
jemalloc	O
,	O
drop	O
support	O
for	O
DEC	B-Device
Alpha	I-Device
4	O
January	O
2009	O
28	O
February	O
2011	O
DTrace	B-Application
,	O
ULE	B-Operating_System
scheduler	I-Operating_System
made	O
default	O
scheduler	O
for	O
i386	B-General_Concept
and	O
AMD64	B-Device
platforms	O
4	O
May	O
2009	O
30	O
June	O
2010	O
support	O
for	O
UltraSPARC	B-General_Concept
III	I-General_Concept
processors	O
,	O
transparent	O
use	O
of	O
superpages	B-General_Concept
in	O
virtual	O
memory	O
subsystem	O
,	O
improvements	O
to	O
jail	B-Language
23	O
March	O
2010	O
31	O
March	O
2012	O
new	O
boot	O
loader	O
gptzfsboot	O
(	O
support	O
for	O
GPT	B-Application
and	O
ZFS	B-Application
)	O
,	O
ZFS	B-Application
updated	O
to	O
version	O
13	O
,	O
Perl	B-Language
updated	O
to	O
version	O
5.10	O
,	O
support	O
for	O
VIA	B-Device
Nano	I-Device
processors	O
24	O
February	O
2011	O
28	O
February	O
2013	O
add	O
support	O
for	O
UltraSPARC	B-General_Concept
IV	I-General_Concept
,	O
IV+	O
,	O
and	O
SPARC64	B-Device
V	I-Device
processors	O
,	O
IEEE	O
802.3	O
full	O
duplex	O
flow	O
control	O
(	O
in	O
miibus	O
)	O
.	O
</s>
<s>
25	O
November	O
2009	O
30	O
November	O
2010	O
new	O
USB	B-Protocol
stack	O
,	O
update	O
FreeBSD	B-Language
jails	I-Language
to	O
support	O
modern	O
features	O
,	O
ULE	O
3.0	O
scheduler	O
,	O
superpages	B-General_Concept
,	O
NFSv4	O
support	O
23	O
July	O
2010	O
31	O
July	O
2012	O
High	O
Availability	O
Storage	O
,	O
IPFW	B-Protocol
and	O
dummynet	B-Protocol
improvements	O
,	O
SMP	B-Operating_System
in	O
PowerPC	B-Architecture
G5	O
systems	O
,	O
MP-safe	O
MS-DOS	O
filesystem	O
,	O
zfsloader	O
,	O
NFSv4	O
ACL	O
for	O
UFS	B-Operating_System
and	O
ZFS	B-Application
24	O
February	O
2011	O
31	O
July	O
2012	O
import	O
V4L	B-Application
into	O
Linux	B-General_Concept
emulator	I-General_Concept
18	O
April	O
2012	O
30	O
April	O
2014	O
graid	O
replaces	O
ataraid	O
;	O
update	O
ZFS	B-Application
to	O
version	O
28	O
;	O
DTrace	B-Application
ability	O
on	O
Linux	B-General_Concept
emulated	I-General_Concept
binaries	O
;	O
mod_cc	O
pluggable	O
congestion	O
control	O
framework	O
for	O
TCP/IP	O
stack	O
7	O
June	O
2013	O
1	O
August	O
2015	O
12	O
January	O
2012	O
31	O
March	O
2013	O
Userland	O
DTrace	B-Application
,	O
substitute	O
GCC	B-Application
with	O
Clang	B-Application
and	O
LLVM	B-Application
for	O
base	O
system	O
,	O
USB	B-Protocol
3.0	O
support	O
,	O
UFS	B-Operating_System
SoftUpdates+Journal	O
,	O
moving	O
ATA	B-Protocol
disk	O
drivers	O
to	O
the	O
CAM	O
system	O
,	O
update	O
ZFS	B-Application
to	O
version	O
28	O
,	O
replaced	O
sysinstall	O
with	O
bsdinstall	O
.	O
</s>
<s>
The	O
timeline	O
shows	O
that	O
the	O
span	O
of	O
a	O
single	O
release	O
generation	O
of	O
FreeBSD	B-Operating_System
lasts	O
around	O
5	O
years	O
.	O
</s>
<s>
Since	O
the	O
FreeBSD	B-Operating_System
project	I-Operating_System
makes	O
effort	O
for	O
binary	O
backward	O
(	O
and	O
limited	O
forward	O
)	O
compatibility	O
within	O
the	O
same	O
release	O
generation	O
,	O
this	O
allows	O
users	O
5+	O
years	O
of	O
support	O
,	O
with	O
trivial-to-easy	O
upgrading	O
within	O
the	O
release	O
generation	O
.	O
</s>
