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From: pete@ecrcvax.UUCP (Pete Delaney)
Newsgroups: net.unix-wizards,net.bugs.4bsd,net.unix
Subject: Problem expanding System Page Table Size - boot problem?
Message-ID: <179@ecrcvax.UUCP>
Date: Sat, 21-Dec-85 05:36:38 EST
Article-I.D.: ecrcvax.179
Posted: Sat Dec 21 05:36:38 1985
Date-Received: Fri, 10-Jan-86 06:26:53 EST
Reply-To: pete@ecrcvax.UUCP (Pete Delaney)
Organization: ECRC, D-8000 Muenchen 81, W. Germany
Lines: 46

Hey Unix Wizards:

	I'm having a bit of trouble this morning with "my" kernel.  I changed
a kernel debuging aid and got a:

	panic: sys pt too small			[ @ sys/vax/machdep.c ]

So I increase the system page table size from (20 + MAXUSERS)*NPTEPG
					 to   (30 + MAXUSERS)*NPTEPG.

Now it stops in the boot phase after loading the data psect.
    Ex:
	:hp(0,0)vmunix.nfs
	317188+146164
		HALT INST EXECUTED
		HALTED AT 00000001		[ Why Here ? ]

Could this be a problem with the boot?
Perhaps I should try 22 instead of 30?

The sizes if the kernel are:
	text	data	bss	dec	hex
	317188	146164	66340	529692	8151c

The reason it's so large is it includes:
	NFS,
	DoD Internet,
	ISO Internet,
	Chaos Net,
	Kernel Tracing,
	etc, etc, ...

So, do you think it the boot?  Is it easy to change?  [Probably not]

It probably easily avoided by not increasing the pt size so much,
but just in case it's not I thought it prudent to ask around.

-- 

--------------------------------------------
Pete Delaney - Rocky Mnt. Unix Consultant	Phone: (49) 89 92699-139
European Computer-Industry Research Center 	UUCP: mcvax!unido!ecrcvax!pete
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