Date: Sat, 31 May 1997 02:39:25 -0400 (EDT) From: Nathan Stratton <nathan@netrail.net> To: Robert Morris <rtm@viaweb.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: 1GB of ram? Message-ID: <Pine.LNX.3.95.970531023743.2912A-100000@netrail.net> In-Reply-To: <199705310314.XAA16641@sponsz.viaweb.com>
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Have you tried to swap around your memory? You may have a 1 bad RAM chip, in one of the high banks. When your system starts to use it it will then crash. I had this when I had 512 megs or ram in a box. It turned out that of of the chips was bad in the last bank. On Fri, 30 May 1997, Robert Morris wrote: > I have a PentiumPro on a SuperMicro P6DNF with 1GB of RAM running > FreeBSD 2.1.5. I cannot get FreeBSD to work reliably. Here's the > interesting part of my kernel config file: > > maxusers 128 > options "MAXMEM=1048576" > options "NKPDE=127" > options "VM_KMEM_SIZE=50331648" > options "OPEN_MAX=256" > options "CHILD_MAX=512" > options "NMBCLUSTERS=4096" > > My Makefile.i386 says LOAD_ADDRESS?=E0100000 > > The system boots, runs for a while, and appears to recognize and make > use of the entire gigabyte. If I create tens of thousands of files (by > untarring), it crashes, saying > > kernel page directory invalid, pdir=3ff3a063, va=400000 > panic: invalid kernel page directory > > The backtrace is pmap_enter, vm_fault, vm_fault_wire, vm_map_pageable, > vslock, __sysctl. I happen to be running pstat -T when the crash > occurs. This behavior is repeatable. > > Decreasing MAXMEM to 256MB causes the problem to go away. > > I don't understand the rules for setting NKPDE, VM_KMEM_SIZE, and > LOAD_ADDRESS. Can anyone help me out? > > Thanks, > Robert Morris > Nathan Stratton President, NetRail,Inc. ------------------------------------------------------------------------ Phone (888)NetRail NetRail, Inc. Fax (404)522-1939 230 Peachtree Suite 500 WWW http://www.netrail.net/ Atlanta, GA 30303 ------------------------------------------------------------------------ "No king is saved by the size of his army; no warrior escapes by his great strength. - Psalm 33:16
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