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- Newsgroups: comp.os.minix
- Path: sparky!uunet!mcsun!sun4nl!star.cs.vu.nl!philip
- From: philip@cs.vu.nl (Philip Homburg)
- Subject: Re: Is MINIX much better than LINUX?
- Message-ID: <Bz76pu.AE0@cs.vu.nl>
- Sender: news@cs.vu.nl
- Organization: Fac. Wiskunde & Informatica, VU, Amsterdam
- References: <1992Dec12.034538.14723@netcom.com> <1992Dec12.090926.28084@klaava.Helsinki.FI>
- Date: Sun, 13 Dec 1992 12:29:53 GMT
- Lines: 95
-
- In article <1992Dec12.090926.28084@klaava.Helsinki.FI> torvalds@klaava.Helsinki.FI (Linus Torvalds) writes:
- %In article <1992Dec12.034538.14723@netcom.com> sjs@netcom.com (Stephen Schow) writes:
- %>I need some reasons for buying minix versus just getting linux for free.
- %>Anyone got any concrete ones. I won't really be doing any commercial things.
- %>I just want to get through my BSCS, where all of our programming has to be
- %>on UNIX machines.
- %
- %Can't pass on this one... The simple answer is a resounding NO.
-
- No, there is no simple answer. If I had the chance, I would certainly buy
- Minix (of course I got Minix for free).
-
- %There are two circumstances when you may find minix better:
- % - studies with the book: minix documentation is better, and if you are
- % reading the Tanenbaum book, minix will naturally be closer to what is
- % covered in the text.
-
- I agree, if you want to understand an operating system, start with Minix.
-
- % - if linux won't run on your hardware (ie PS/2 or any non-386
- % hardware, or <2MB memory).
- %
- If your hardware doesn't run linux, linux simply isn't an option.
-
- %Linux has all the features that minix has (except minix-specific things
- %like amoeba support), as well as a lot of features minix doesn't have:
-
- Amoeba support is almost removed since Amoeba moved on to a new protocol
- which is not implemented under Minix and probably will not be implemented.
-
- % - a real mm taking advantage of the 386 features. Virtual memory,
- % demand-loading, shared pages, the works. There seem to be patches
- % for some of this to minix as well, but I haven't heard how well they
- % work.
- % - multithreading filesystem. 'Nuff said. Available in a limited form
- % for minix as a cludge.
- % - better buffer cache handling. The cache grows/shrinks dynamically
- % with memory consumption.
- % - virtual filesystem layer: you can have several different fs's active
- % at once. The current standard filesystems are: minix (old 1.5 type),
- % extended (255 char filenames, 4GB partitions), msdos, proc (for
- % process information), isofs (CDROM filesystem) and NFS client fs.
- % - floating point support (ie you can use your coprocessor if you have
- % one - the kernel makes sure processes don't mess with each others
- % state)
- % - coprocessor emulation (so that you can ignore the lack of coprocessor
- % if you don't mind the performance hit)
- % - netowrking support with tcp/ip and NFS (SLIP is in the works)
- % - pretty much 100% POSIX and features from both sysv and bsd worlds:
- % porting most stuff is mostly very simple.
- % - X11 and most GNU software, as well as a lot of other free software
- % out there.
- % - shared libraries, so X11 binaries don't take up all your disk space..
- % - Active support (me + probably several thousand activists: c.o.linux
- % has been on the top-40 lists of most active newsgroups for the last
- % couple of months).
- %
- %And a lot more...
-
- Of course these features are also offered by the Unix that runs on the
- computers at your university, and mostlikely, the computers there are
- also faster and otherwise better equipped than your computer at home.
- (At least the computers at my university are).
-
- Now, if you only want to write programs using existing tools, you should
- look for Solaris 2.1 or SVR4 (maybe your university can get a site license,
- including machines at home), Linux or 386BSD (or BSDI), and finally
- Minix or Coherent.
-
- On the other hand, you are interrested in kernel hacking, Minix is a much
- better choice, since it is much smaller and easier to understand. And
- most important, since it lacks all the features mentioned by Linus, you
- actually do something useful.
-
- For instance, I implemented a VM, TCP/IP, and ported X11R5, other people
- contributed symbolic links, longer filenames (60 characters), 386 support,
- 387 support.
-
- Of course, the fun was in writing these (important) parts of an O.S.,
- otherwise I would run SVR3.2.2, or SVR4. The next project would be a
- rewrite of Minix into a true distributed OS like Amoeba or Mach :-) :-)
-
- So, in short if you want a simple system you can understand try Minix,
- if you want complete system try Linux.
-
-
-
- Philip
-
-
-
- Philip Homburg <philip@cs.vu.nl>
- Vrije Universiteit / Dept. of Math. & Comp. Sci. +31 20 5483546
- Amoeba project / De Boelelaan 1081A
- 1081 HV Amsterdam / The Netherlands
-