From: staceyc@sco.COM (Stacey Campbell) Subject: Re: X and math co-processor; A Speed up? Date: Fri, 19 Mar 1993 17:10:51 GMT
In article <komarimf.732514520@craft.camp.clarkson.edu> komarimf@craft.camp.clarkson.edu (Mark 'Henry' Komarinski) writes:
>lcd@umcc.ais.org (Leon Dent) writes:
>>I began to wonder if the addition of
>>a math chip would be a noticeable addition (i.e. in regards to scrolling).
>
>It will greatly speed up X.
It will not greatly speed up the X server, if that is what you meant.
The quickest way to see what is going on is to grep your X server source
for 'double' or 'float', you will (hopefully ;-) see that the only places
floating point is used in your X server is to render arcs, rounded caps
on wide lines, some complex polygons, and some font scaling. Unless
I run X draw/paint clients, I can run all sorts of X apps on my old
386/20 sans 387 without getting burned by the lack of a coprocessor.
If adding a math-coprocessor speeds up text scrolling (assuming another
process isn't hammering the CPU with floating point) on an X server then
I would suggest that you change to another X server vendor.
--
Stacey Campbell - staceyc@sco.com - uunet!sco!staceyc