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From: mjr@hussar.dco.dec.com (Marcus J. Ranum)
Newsgroups: comp.unix.wizards
Subject: Re: Shared libraries (was Re: Window system bashing (was Re: X11 bashing))
Message-ID: <1991May09.032802.27213@decuac.dec.com>
Date: 9 May 91 03:28:02 GMT
References: <BZS.91May4202942@world.std.com> <572@appserv.Eng.Sun.COM>
Organization: Digital Equipment Corp., Washington Ultrix Resource Center
Lines: 16

lm@slovax.Eng.Sun.COM (Larry McVoy) writes:

>I do not know (not having measured it and not really groking how
>dynamic linking works) if each libc reference costs 20milliseconds on
>first reference.   I hope not.

	I was talking this over with someone the other day who claimed
that SunOs' more recent versions have "often used" utilities like /bin/ls
statically linked because there were complaints of performance hits -
can anyone confirm or deny this? I haven't has access to a machine
running a SunOS more recent than 4.0. [I realize that "often used" and
critical utilities might be statically linked to prevent the whole
system being rendered useless by a hit on the library. Is "ldconfig"
or whatever it's called still a dynamically linked file?]

mjr.