OS INFO POST

[Dave Labuda]

This is a posting of information on operating system sizes.
First, I would like to thank everyone for their contributions.
Second, I would like to disclaim any connection to these numbers.
Most of the information was given to me, and I accept it as truth unless
someone claims otherwise. The UNIX info I compiled myself - it includes
all device drivers at our installation. If I missed anyone's info,
I apologize - our net connection was broken for a couple of weeks.
The number of system calls for the OS's was left out due to many flames on
the usefulness of that factor. Also, several people complained that UNIX
does not provide equal functionality as other OS's. This is somewhat true,
but I still think the chart is interesting (one can also argue that the
OS for a PDP-11 SHOULD be smaller than that for an IBM 370).
If anyone has better numbers or other systems they would like to add, feel
free to mail me the information.

Here it is, I think it shows that V7 is the clear winner :

    OS           MACHINE               SOURCE               EXECUTABLE
-------------------------------------------------------------------------

UNIX V7		  PDP-11	  ~18,000 lines (C)	       ~64K

UNIX 4.1 bsd	  VAXEN		  ~33,000 lines (C)	      ~200K

UNIX 4.2 bsd	  VAXEN		  ~75,000 lines (C)	      ~300K

VMS		  VAXEN		~2,000,000 lines (Ass)		?

DCTS		Honeywell	  ~50,000 lines (PL1)	      ~500K

TOPS-10		  DEC-10	 ~500,000 lines (Ass)	      ~500K

MTS		  IBM 370	 ~800,000 lines (Ass)		?

B6500	       Burroughs 6500	~1,000,000 lines (Ass)		?

OS/1100		Sperry 1100	~1,000,000 lines (Ass)		?

MVS		  IBM 370	>2,000,000 lines (Ass)		?

-------------------------------------------------------------------------

One last thing, the literary award of the season goes to John Muth at Sun
for comparing MVS to "kicking a dead whale down the beach".

OK - flame away folks, I'm sure no one is happy with the numbers....

						dave labuda
						decvax!cwruecmp!labuda

*There are no opinions here, so no one is represented.

*These numbers may be wrong, but at least they're not a trademark of ATT.