*BSD News Article 90076


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Newsgroups: comp.unix.bsd.freebsd.misc
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From: jeays@statcan.ca (Mike Jeays)
Subject: Busy X-server
Message-ID: <E61E9H.DJz@statcan.ca>
Organization: Statistics Canada
X-Newsreader: TIN [version 1.2 PL2]
Date: Sun, 23 Feb 1997 03:41:40 GMT
Lines: 17
Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:36087

I tried running a demonstration program called "plaid" on
a remote Sun machine, linked via an ISDN line to my FreeBSD
Pentium.  It appears to transmit a set of X-protocol
commands that draw pretty patterns in a window on my 
display, in which all the activity takes place locally in the
X-server.  The activity on the ISDN line drops to zero in
just a few seconds.

It works well - except that my machine becomes so CPU bound
that it will not respond to the mouse or keyboard, which makes
it very difficult to regain control and kill "plaid".  It
won't even respond to Ctrl-ALT-F1 and the like - I eventually
got it to display another virtual screen (under FVWM), and
then shut down the X-server and restarted it.  Is there a trick
to getting out of situations like this?