Date: Fri, 30 Sep 2005 11:41:01 -0400 From: "Tamouh H." <hakmi@rogers.com> To: <freebsd-questions@freebsd.org> Subject: Weird Real memory reported with 5.4 PAE support Message-ID: <20050930153855.204C943D49@mx1.FreeBSD.org>
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Hello,
We have a Supermicro that has Winston 4GB of ECC Registered DDR333 RAM. Dual
Xeon Processors.
With PAE enabled, it seems the system reports 6GB of realmemory instead of
4GB, as below:
======================
Copyright (c) 1992-2005 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 5.4-RELEASE #2: Thu Sep 29 13:04:56 EDT 2005
root@impala.com:/usr/obj/usr/src/sys/IMPALA
ACPI APIC Table: <PTLTD APIC >
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Xeon(TM) CPU 2.80GHz (2793.01-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf41 Stepping = 1
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA
,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SS
Hyperthreading: 2 logical CPUs
real memory = 6442450944 (6144 MB) <<<<< Notice how large this amount
avail memory = 4162482176 (3969 MB)
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
cpu2 (AP): APIC ID: 6
cpu3 (AP): APIC ID: 7
ioapic0 <Version 2.0> irqs 0-23 on motherboard
ioapic1 <Version 2.0> irqs 24-47 on motherboard
ioapic2 <Version 2.0> irqs 48-71 on motherboard
ioapic3 <Version 2.0> irqs 72-95 on motherboard
ioapic4 <Version 2.0> irqs 96-119 on motherboard
acpi0: <PTLTD RSDT> on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1008-0x100b on acpi0
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0
=============
We're experiencing Kenerl Fault Trap 12 panics in page faults and thinking
this maybe related. Any ideas ?
These are the extra options in our i386 Kernel config:
options PAE # ENABLE PAE SUPPORT
options SMP # ENABLE MULTI PROCESSOR
options QUOTA # ENABLE QUOTA SUPPORT
makeoptions NO_MODULES=YES # ENABLED FOR PAE SUPPORT
device apic # I/O APIC
device acpi # COMPILE FOR SMP OPTION
Thanks,
Tamouh
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