From: mln@sunkj.larc.nasa.gov (Michael Nelson)
Subject: OSF/1 vs SVR4 (and others)
Organization: ICASE/NASA Langley
Distribution: usa
Date: Thu, 9 Apr 1992 19:10:22 GMT

I said earlier that I was trying to compile a list of features of
SVR4 and OSF/1.  Some others have been included.

I've had a few responses and tried to compile them.  Figured 
I would post the table in order to find out how wrong I am.  :-)
I also don't want to misquote my contributors.

Will post some text in the future.

Comments are encouraged (esp replacing all the ?'s with real 
answers)

Michael Nelson
----

original DEC info from: evans@zk3.dec.com (Marc Evans)

Vendor                          DEC     SUN     HP      IBM     USL
OS                              OSF/1   Solaris HP-UX   AIX     Sys V
Version                         1.0     1.0     8.0     3.1     4
Available                       now     now     now     now     now
OS
  Kernel base                   OSF/1   BSD     BSD     AIX     SVR4
  disk mirroring                yes     opt     opt     yes     add-on*
  multi-disk volumes            yes     opt     no      yes     add-on*
  on-line partition growth      yes     opt     no      yes     add-on*
  kernel threads                yes     no      no      no      SVR4 MP
  memory mapped files           yes     yes     no      yes     yes
  realtime extensions           yes     no      yes     yes     yes
  shared libraries              yes     yes     yes     yes     yes
  external pagers               yes     no      no      no      no
  streams                       yes     yes     no      no      yes
  sockets                       yes     yes     yes     yes     yes
  OSF/1 kernel commitment       yes     no      yes     yes     APIs
  run-time dynamic linking      yes     yes     yes?    yes?    yes  **

Standards
  OSF/Motif                     yes     3rd     yes     yes     no
  OSF/Motif                     yes     3rd     yes     yes     3rd  **
  OSF/AES                       yes     no      soon    soon    soon
  XPG3 base branding            yes     yes     yes     yes     yes
  POSIX 1003.1                  yes     yes     yes     yes     yes
  Security level                B-1     C-2 #   ?       ?       B-1 (?) ***

Software Development
  Integrated CASE Tools         yes     yes     yes     no      no
  ANSI C Compiler               yes     yes     yes     yes     yes
  ANSI C Compiler               yes     opt     yes     yes     yes  **
  C++ Support                   summer  opt     opt     3rd     opt
  Compound Document Arch.       yes     no      no      no      no
  OSF/DCE                       start   3rd     soon    soon    soon

Other
  Runs DOS & windows apps       no?     yes     ?       ?       ?       ***
  SNA support                   yes     yes     ?       ?       3rd (?) ***
  Architected for SMP           yes     yes     ?       ?       yes     ***
  SMP available                 ?       yes     ?       ?       yes (?) ***




*USL defines an add-on as a feature which may be layered on top of
existing functionality and released without completely re-releasing the
entire operating system.

** from guy@Auspex.COM (Guy Harris)

*** from wagner@utoday.com (Mitch Wagner)

# CMW "soon" (CMW is a secure standard for windowing)

3rd stands for 3rd party.

opt stand for optional.

start stands for starter kit.

yes? looks like it does something real similar, but maybe not be as
     powerful as a "real" run-time dynamic linking.