FreeBSD
FreeBSD and Linux
Scott Barman
>> What's the big deal, really? If FreeBSD is so good, why don't
I hear more
>> about it, why don't we hear about Oracle et. al. porting to
it, etc.? Am
>> I missing out on something great?
>
>1) FreeBSD is not as open a development model as linux and is "less
sexy",
>hence it gets less press (this point is very IMO)
The FreeBSD organization is just that, an organization.
Overall, it is really more organized than the Linux "organization."
You can find out about all FreeBSD activity from their web site and the
points of contact mentioned (see www.freebsd.org). It is a very open development
model. However, the FreeBSD people like to make sure there are no parallel
development efforts to ensure cleaner releases.
Unfortunatly, there are several Linux organizations traking
Linux development and there really is no single coordination effort to make
one standard distribution. Other than the kernel, you can see this fracturing
(your words) when you look the differences in what you get if you buy a
CD from Red Hat, Caldera, SuSE, or the Slackware CD (from www.cdrom.com).
FreeBSD is based on the 4.4BSD source code that was redacted
following the consent decree in AT&T v. Berkeley Software Design, Inc.
(BSDI) case when AT&T sued BSDI for using unlicensed AT&T source
code licensed from UC-Berkeley (sorry, I don't have the case number handy).
The Computer Science Research Group (CSRG) at Berkeley got out of the BSD
business (after most of their members ran off to BSDI) and published the
redacted source code as 4.4BSD-lite (no more licensing requirements). That's
when the developers grabbed it and ran.
A big difference between FreeBSD and Linux is the base.
BSD has been around since the early 1980s. It was furthered by Dennis Ritchie's
sabatical in Berkeley (I think in 1979) and by the Defense Advanced Projects
Research
Agency (DARPA) grant to port TCP/IP to Unix. The history is legendary and
includes names like Bill Joy (csh, curses, vi) and Mark Horton (sendmail).
BSD is older, more advanced, and has superior networking code (based on
many performance tests). In fact, when Sun ported System V Release 4.0 to
create Solaris 2, they dumped the AT&T/USG/UI/Novell TCP/IP and replaced
it with the BSD-based code they were using under SunOS (which came from
4.3BSD-Tahoe) because it was just plain better.
Linux was born when Linus Torvalds startd playing with Minix,
a very basic system written by Dr. Andrew Tannenbaum. Dr. Tannenbaum developed
Minix to teach students about operating systems using "common"
PCs. He later published a book using Minix as its base and published the
source code. Torvalds worked from a version of this source. It has less
of a history, but a sexy one, in comparison--the kind that sells the over
abundance of trade rags.
>2) The BSD camp is more fractured than linux (there's
FreeBSD, NetBSD,
>OpenBSD, etc.) so there's more infighting and there's no glorious
leader, so
>the pr is harder.
FreeBSD is the version that runs on Intel-based processors
starting with the 80386. It is very tightly coupled to the "standard"
Wintel architecture.
NetBSD is run by a group that saw the strict PC base and
wanted the BSD code on more systems. NetBSD supports a lot of different
platforms almost seamlessly! The same program you write for your PC-based
NetBSD system will run on your Motorola MC68030-based Sun 3, DEC Alpha,
MIPS-based SGI, and PA-RISC based HP with a simple recompile. There is no
need for a bunch of #ifdef's for the different OS types. One operating system,
many architectures!
OpenBSD is the "fractured" group. They were formed
when their "leader" got ticked off because of whatever politics
he didn't like. I once got his story, but you can read more about it on
their web site (www.openbsd.org).
There is no in fighting... at least not any more. :-) There
is no "glorious" leader. They don't want one. These people are
happy with the organization they have, which seems to be fair to all developers
and organizes releases, including their content.
So there's no P.R. However, the "sexiness" of
Torvalds story overshadows the real story of BSD. This is why Linux gets
all the press. It is NOT because of organziation or even technology. If
superior technology is the criteria for the amount of press a system gets,
then why is Windoze NT constantly in the news?
>3) FreeBSD runs linux binaries, so there's no point
in porting to it. (IIRC, >the FreeBSD people specifically state,
"don't port to us, we'll just run the >linux binaries.)
FreeBSD is faster. FreeBSD has a lot of mature features
that have been adapted by Linux. Most of the network-based innovations really
came from BSD-based systems. Afterall, it's from which Unix-based networking
got its
start. The fact that FreeBSD can run Linux binaries is a testament to the
technology of FreeBSD and the people in charge of putting it together. Think
about it... an operating system that can run binaries from another?
Gee... why can't Linux run *BSD binaries?
>4) There are more people running linux, so there's
more support (and press, so
>new users are more likely to start with linux, so there's more people
using
>linux...)
I love this type of argument! "There are more people
running linux..." brings about two questions:
1) So that makes Windoze the best OS on the market??
2) So I guess 10,000 lemmings can't be wrong, eh? (my favorite)
The press comes from the story of Linux's beginnings and
the marketing of Linux-based companies like Red Hat, Caldera, and SuSE.
Then again, Micro$oft generates more press than Linux could dream of (in
the short term).
Sorry, the "popularity contest" is really not
a good argument!
>5) The hardware support isn't as nice. I've always
wanted to try FreeBSD, but
>the only machine I had available barfed every time I tried putting
FreeBSD on
>it (ran linux fine.)
Really???? Until my 486DX/33 died, I had run both Red Hat
4.2 and FreeBSD on separate 1Gb IDE disks. The system ran like a champ!
In fact, FreeBSD was installed, with one minor problem, via a ppp-link to
ftp.freebsd.org. To be fair, the one problem was because of a quirk in the
PPP link to my ISP (Netcom) and the "extensions" they added for
Windoze-based connections. However, a quick note to the FreeBSD people and
I had a new boot disk image the next day!
I have installed both systems using a CD-ROM (the last being
Red Hat 5.0). Although I do have to admit that I might have a current preference
for Linux, the FreeBSD install is far superior! It is better than Sun's
install procedure
(the last being the X-based interface under Solaris 2.6). Solaris ranks
as very good. FreeBSD's is excellent!!
BTW: NetBSD has almost as good an installation procedure
as FreeBSD. I last tried it over a year ago on an old Sun 4/110 (an original
SPARC-based system). I have never used OpenBSD.
>There's probably others, but the bottom line is that
*BSD is perfectly viable,
>and supposedly well worth the effort. OTOH, if your linux system
does what you
>want, why change? I dumped windows because it was too unstable, too
slow, and
>too expensive. Now I run linux, which is rock-solid, fast, and free.
Can *BSD
>be rock-solider and freer? (Faster's not enough of a reason for me
to look
>elsewhere, even if it were so.)
Even more solid and faster; benchmarks have borne this out.
One of the major reasons that *BSD is not as popular as
Linux is because of what it emulates. From the beginning, Linux was programmed
to be closer to POSIX-compliant and System V than the BSD-based systems.
From a business point of view, if all your venders are moving to System
V (like Sun going from SunOS to Solaris), then running a BSD-based system
seems not to make sense. So when the "free" Linux became available
and was more System V compatible than FreeBSD, it was easier for the techies
to justify Linux to management ("hey man, it's almost like our Sun!"
:-).
Although both systems can pass POSIX compliance today, there
are fundamental differences in the basis of how they work. There are diffences
in the kernel, system calls, libraries, system administration, among others.
I am not going
to say one is better than the other. However, as a long-time BSD biggot
(since my days of using 4.1BSD on a VAX 11/780), I can say that I find the
System V way of doing things a necessary pain in the rump!
I will give one "solid" opinion:
If I had to choose one system that would act as my router, DNS, ftp server,
e-mail gateway, firewall, web server, proxy server, etc., that system would
run a BSD-based operating system.
If I had to choose one system that would act as my desktop workstation,
run X, all the application I like, etc., that system would run Linux. HOWEVER,
I would have no problem running Linux as my work horse server or
running the BSD-based system on my desktop.
BTW: After going though an installation of Caldera OpenLinux with Novell server support, I have a lot of respect for what they did. Caldera is a real nice package and worthy of checking out!