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From: chandran@lucy.slcs.slb.com (Sharat Chandran)
Newsgroups: comp.windows.x
Subject: xterm performance (X11R4)
Keywords: Xterm
Message-ID: <4003@linus.SLCS.SLB.COM>
Date: 7 Feb 90 15:33:05 GMT
Sender: news@linus.SLCS.SLB.COM
Reply-To: chandran@slcs.slb.com
Organization: Schlumberger Lab for CS, Austin, TX
Lines: 26


Can somebody tell me how, if at all, I can avoide the annoying flicker
on a "xterm" session?  

More specifically: I am using the X Consortium X11R4 server on a Sun
4/260.  If I have  a full page on a screen, and I type "ls", to list
the contents of a directory, I see this whole window getting repainted
line by line, and I can *see* that happen.  It creates a flicker and
distracts the user. 

What perhaps should happen is a block copy of the whole page less a
few lines (that are now occupied by the output of the "ls" command).

I did not see this happen on the Sun supplied X11/NeWS (R3 compatible)
server.  So what gives?  (Ditto with gnu emacs running in its X window).

What should I do to avoid this?  I am using the "-j" switch  to allow
"jump scrolling".

[xwininfo says that 
         ==> Window Backing Store State: NotUseful
         ==> Window Save Under State: no
]

	Thanks,
	chandran@slcs.slb.com