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From: finegan@uccba.UUCP
Newsgroups: comp.unix.wizards
Subject: Re: Lack of core & swap space causing problems
Message-ID: <1242@uccba.UUCP>
Date: Wed, 23-Sep-87 23:38:33 EDT
Article-I.D.: uccba.1242
Posted: Wed Sep 23 23:38:33 1987
Date-Received: Sat, 26-Sep-87 09:53:29 EDT
References: <12981@comp.vuw.ac.nz>
Organization: Univ of Cincinnati, College of Business Admin.
Lines: 30
Summary: You must reconfig

In article <12981@comp.vuw.ac.nz>, edward@comp.vuw.ac.nz (Ed Wilkinson) writes:
> We run Ultrix 1.2 on a Vax 750 & nroff recently told us it didn't have
> enough core to run. 
> 
> 	Ed Wilkinson	...!uunet!vuwcomp!edward

We had problems running reduce on a 11/750 with Ultrix 1.2 and solved all
problems by increasing the swap space :
	In your sys/conf/YOURSYSTEMNAME file is a line like:

..... root on partition swap on partition size sectors .....

just fill in the blanks (where partition is probably (r)ra0a for root and
(r)ra0b for swap). The size is not mentioned in the documentation, but the
Ultrix v2.0 manual says ~3 times core as max needed (I have heard 2.5 also).
When we guessed at 30Mbytes (3+ times our 8M of main memory), you could
log in ten or more reduce users, and it would get as slow as you could stand!
Also, make sure you are only swapping in one copy of the program. If several
people use nroff, only the first one loaded into memory should be used. You
can use chmod (sticky bit ?).
	To recompile the above mess: config YOURSYSTEMNAME, cd .. (where dir
of the same name must exist), make depend, make vmunix, save /vmunix, mv
/sys/vmunix /vmunix ... This may be off a little, but helps you pick out
the part of the installation documentation to look at. You rename the
vmunix, in case your new kernel is fubar (to use the latest history lesson),
but I don't know if you could then boot either the old one or the new one.
I believe you can (I can on SysV 3B2, and I think I had to when Ultrix 1.2
was being installed ...). Whatever. Good Luck -
						Mike Finegan
						...!{hal|pyramid}!uccba!finegan