Path: utzoo!utgpu!water!watmath!clyde!rutgers!sri-spam!ames!acornrc!bob
From: bob@acornrc.UUCP (Bob Weissman)
Newsgroups: comp.unix.questions
Subject: Sharable executables -- ambiguous documentation
Keywords: ld(1), chmod(2), executables
Message-ID: <562@acornrc.UUCP>
Date: 12 Jan 88 22:51:35 GMT
Organization: Acorn Research Centre, Palo Alto, CA
Lines: 23
Supersedes: <561@acornrc.UUCP>

I'm on a Vax running 4.2bsd.

The man page for ld(1) indicates that the default for executable images is
for them to be demand paged, as if the -z flag had been specified.  The
documentation of the -n flag indicates that it produces sharable, preloaded
executables.

But the man page for chmod(2), in its brief discussion of the sticky bit
(mode 01000), says that the default is for executables to be sharable.

Who's right here?

I guess what I'm really asking is:

Will my system's performance improve if I relink the most heavily used
programs, like sh, csh, and emacs, with the -n switch?  (And if so,
why do the Berkeley-supplied Makefiles not specify -n to the linker?)

-- 
Bob Weissman
Internet:	bob@acornrc.UUCP
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