AIX on Model 80 with X windows question

[Richard L. Pettit Jr.]

In article <14059 at rouge.usl.edu> pcb at gator.cacs.usl.edu (Peter C. Bahrs) writes:
>I have a model 80 with 300mb hd, 8mb memory and a 20mhz processor.
>I have just loaded the new release of IBM AIX 1.2.  
>
>X Windows is kind of slow.  When I run ico -r, it doesn't move across the
>screen...it chunks across.  The mouse also freezes for small time
>periods and then catches up.
>
>I am using a 10mb page space.
>
>Any ideas on fine tuning this machine?

Buy a  math  co-processor.   Floating  point  in  AIX  1.[12]  is  done  by
attempting  to execute a 387 instruction and faulting into the kernel where
the 387 emulation is done in  software.   At  first  glance  this  type  of
implementation  looks pretty bogus, but in the long run, performance can be
regained by adding the co-processor and no recompilation needs to be  done.
The  387  instructions  will  be  executed  by  the  now   installed   387.
Flexibility at the cost of performance.  Don't shoot me, I'm only the piano
player.

Rich
----
              Richard Pettit                       Locus Computing Corp.
                                richp at locus.com
        "Opinions expressed herein are of the author, not (LCC or IBM)"