Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!ucsd!sdd.hp.com!hplabs!hpfcso!hpfcmgw!chan
From: chan@hpfcmgw.HP.COM (Chan Benson)
Newsgroups: comp.windows.x
Subject: Re: Performance Analysis of X windows
Message-ID: <1210039@hpfcmgw.HP.COM>
Date: 19 Jul 90 16:59:59 GMT
References: <80@nic.cerf.net>
Organization: HP Fort Collins, CO
Lines: 16

>> 3. Do different vendor realizations differ in a non-trivial manner
>>    with respect to the communication/processing split posed above ?
>>    Do different releases ( i.e R3/R4) differ in this matter ?
>
>In both cases: no.  Why?  Because they interoperate, which means that
>they must speak the same protocol, implying that the same things must
>be done on both sides of the wire.  (There are some extensions, like
>the various PostScript implementations, that allow this split to be
>changed, but I'm talking about just core X here.)

Well, there is the possibility that someone could use a different
local IPC medium (such as shared memory) that would perturb performance
characterization. I don't know if any such implementations exist, but 
I do know they have been discussed.

			-- Chan