Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!asuvax!mcdphx!dover!mathys
From: mathys@dover.sps.mot.com (Yves Mathys)
Newsgroups: comp.sys.apollo
Subject: Why the X11R4 server is so slow on Apollo ?
Message-ID: <2247@dover.sps.mot.com>
Date: 4 May 90 00:27:33 GMT
Reply-To: mathys@dover.sps.mot.com.UUCP (Yves Mathys)
Organization: Motorola SPS, Mesa, AZ
Lines: 20

I wonder why the X server, version R4, on Apollo is 
so slow. 
The worst case is drawing non null lines on the screen. I used
the program xgc on an Apollo dn3500 and on a Sun 3/80. Both systems
with 8 megabytes of memory, both systems using the same processor.
I ran X11R4 from MIT. 
On the Apollo dn3500, sr10.2, it took 39 seconds to draw 600 lines
of width 1 (but 0.4 sec for a width of 0).
On SUN it took only 6.74 sec. ! 
The Apollo is almost 7 times slower than the SUN ! 

If the lines got a zero size, the speed is pretty close. 

Someone knows why the Apollo graphic portion of X is so 
badly implemented. 

		Yves Mathys 
		Motorola Inc 
		Sector CAD
		mathys@sps.mot.com