[comp.windows.x] xterm performance

chandran@lucy.slcs.slb.com (Sharat Chandran) (02/07/90)

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

casey@gauss.llnl.gov (Casey Leedom) (02/10/90)

| From: chandran@slcs.slb.com
| 
| Can somebody tell me how, if at all, I can avoid the annoying flicker
| on a "xterm" session?

  I wonder if this is the same thing which causes xterm to repaint itself
when you do a mouse mark selection?  The funny thing about this is that
xterm doesn't do it all the time.  So far I've been completely unable to
come up with a sequence of events that will cause this behavior
reliably.  Unfortunately it happens a LOT.  This makes marking selections
on my GraphOn a real pain since all those bits have to flow down a low
bandwidth pipe ...

Casey