Shared libraries (was Re: Window system bashing (was Re: X11 bashing))

[Sean Eric Fagan]

In article <1991Apr29.025800.3108 at kithrup.COM> sef at kithrup.COM (Sean Eric Fagan) writes:
>On a '386 running SCO UNIX (or xenix, for that matter), a call to a shared
>library function one jump in addition to the normal call.  Thus, there is a
>*very* slight performance hit.

Oops.  Forgot something, which explained my next paragraph.  In addition to
the call overhead, any shared data goes through an extra level of
indirection, adding to execution time, and any function within the same
shared library will also go through an extra layer of indirection.

While this is not necessarily worth it for things like printf, I do believe
that it is worth it for things like X.

-- 
Sean Eric Fagan  | "I made the universe, but please don't blame me for it;
sef at kithrup.COM  |  I had a bellyache at the time."
-----------------+           -- The Turtle (Stephen King, _It_)
Any opinions expressed are my own, and generally unpopular with others.