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From: mouse@lightning.mcrcim.mcgill.EDU
Newsgroups: comp.windows.x
Subject: Re:  X11 and SunView
Message-ID: <9102160521.AA25808@lightning.McRCIM.McGill.EDU>
Date: 16 Feb 91 05:21:06 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 33

> How much does it cost to run X11 under SunView?

> It seems that, to a naive user accustomed to using SunView, it is not
> unreasonable to try to run X11 while within the SunView environment.
> In order to support this sort of usage, I defined the
> UseSunWindowsInServer macro in the sun.cf file.  As the world shifts
> away from SunView, I wonder how much of a penalty the raw X11 users
> are paying for the naive users to use X11-within-SunView.

Well, a "raw X11 user" wouldn't be running X under SunView anyway, so
the only cost would be a little unused code in the server.

Running X under SunView pays a little more penalty, but not much.
There is of course the penalty of having all the SunView stuff lying
around in memory all the time; if memory or swap space is short, this
can be significant.  All output is drawn directly on the frame buffer;
SunView does not affect this.  Input under SunView does come through
SunView; this will of course affect things, though I suspect it won't
be by very much, since so much of SunView is kernel-based.

> If I decided to support both usages, would it require anything more
> than 2 Xsun programs (Xsun.sunview and Xsun.nosunview) and some logic
> in startx to pick the correct server?

Not even that.  Xsun built with UseSunWindowsInServer set to YES works
just fine even when you're not running SunView.  (It checks whether
WINDOW_PARENT is set in the environment to determine whether it should
do its SunView shenanigans.)

					der Mouse

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