Relative efficiency of external interfacing methods
Sat May 22 20:44:08 CEST 1999
> On Sat, May 22, 1999 at 12:21:33AM +0200, Claes Wikstrom wrote:
> > >
> > > Is there any significant performance difference between using ports
> > > and the newer, more direct method?
> > >
> > What do you mean by "newer, more direct method" ??
> he probally meant the dynamic share library version, a linked in driver. :)
In that case the difference in performance between
calling a c-func in a linked driver versus calling a
c-func in another os process is enormous. It of
cource depends on the underlying OS, but on unix'es it's high
and on win32 it's extremely++ high.
The advantage of a linked-in driver is speed, the disadvantages are
the difficulties that are associated with running together with
the erlang runtime system. No blocking syscalls etc.
> Speaking of the C interface, what are the plans for IG ?
Yes, I'd like to know too ??
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