Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!ucsd!ucbvax!Eng.Sun.COM!sevans
From: sevans@Eng.Sun.COM (Steve Evans)
Newsgroups: comp.windows.news
Subject: Re:  Display lock broken
Message-ID: <9006261717.AA06974@parkway.Eng.Sun.COM>
Date: 27 Jun 90 09:05:26 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 28


> I am plagued by messages, usually when loading large files into the
> server:

These messages comes from the SunWindows kernel driver.  They are
generated when the NeWS or xnews server doesn't release the SunWindows
display lock within a given number of process virtual seconds (2 is the
default).  If you don't run any SunView programs under NeWS you
shouldn't see them.  However, once you run any SunView programs under
NeWS you may continue to see them even if there are no longer any
SunView programs running.

In the "SunView System Programmer's Guide" in the chapter entitled
"Workstations" in the section entitled "Kernel Tuning Options" you
will see a kernel variable named ws_lock_limit that may be changed
to modify the 2 second default.  The following would permanently
modify the setting to be 8 seconds.

	% su
	# adb -w /vmunix /dev/kmem
	ws_lock_limit?W 8
	ws_lock_limit/W 8
	^D

The main drawback of doing this is that the kernel will deal less
swiftly with display lock hogs.

sevans