Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uwm.edu!zaphod.mps.ohio-state.edu!usc!elroy.jpl.nasa.gov!decwrl!decwrl.dec.com!joel
From: joel@decwrl.dec.com (Joel McCormack)
Newsgroups: comp.windows.x
Subject: Re: Confusing performance data about XNEWS and R4
Message-ID: <2881@bacchus.dec.com>
Date: 23 Feb 90 18:32:34 GMT
References: <22345@pasteur.Berkeley.EDU>
Sender: news@decwrl.dec.com
Reply-To: joel@decwrl.dec.com (Joel McCormack)
Organization: DEC Western Research Laboratory
Lines: 9

The obvious conclusion would be that the R4 server performs some other
operation verrrry slowly, which eats up all of its advantage, or that
the way you draw lines is not precisely what x11perf measures.  What
rasterop are you using to paint the window?  In the released R4 server,
almost anything other than GXcopy (and sometimes GXxor) is quite slow. 
Also, any operation that requires a planemask that is not all 1's is
quite slow.

- Joel McCormack (decwrl!joel, joel@decwrl.dec.com)