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Path: utzoo!utgpu!water!watmath!clyde!rutgers!husc6!seismo!mimsy!chris
From: chris@mimsy.UUCP
Newsgroups: comp.unix.questions
Subject: Re: Can only get 8 lines working on Ultrix MicroVAX
Message-ID: <6880@mimsy.UUCP>
Date: Tue, 2-Jun-87 03:02:49 EDT
Article-I.D.: mimsy.6880
Posted: Tue Jun  2 03:02:49 1987
Date-Received: Thu, 4-Jun-87 01:31:16 EDT
References: <242@kosman.UUCP>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 31
Summary: Try a bigger timeout table

In article <242@kosman.UUCP> kevin@kosman.UUCP (Kevin O'Gorman) writes:
>I'm running Ultrix 1.2A on a MicroVAX II, and I have the 16-user version.
>... /dev contained ... ttyh0 - ttyh7. ... I created 8 more with the same
>major device number and minor numbers from 8 to 15. ...  When I try
>to output to these new entries, such as cat >/dev/ttyh8, the system
>immediately crashes, complaining that it overflowed the timeout table.

Try increasing the size of the timeout table.  It is specified by
`ncallout'.  In 4.3BSD, this is by default 16+NPROC; NPROC is 20
+ 8 * MAXUSERS; MAXUSERS is the `maxusers' line in the configuration
file /sys/conf/FOOVAX.  `maxusers' has nothing to do with the
maximum number of users, and really should be called something
boring like `global_system_size_parameter'.

As a quick hack, do this:

	% su
	Password: <whatever>
	# shutdown ...
					# then wait; once down:
	# adb -w /vmunix
	ncallout?D
	_ncallout:
	_ncallout:	164		# current size is 164 entries
	ncallout?W 0t328		# so just double it
	# fastboot			# and try that.

If that fixes it, that was it.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7690)
Domain:	chris@mimsy.umd.edu	Path:	seismo!mimsy!chris