FreeBSD 7.0R and 7.0CURRENT (amd64) show only 2,5Gb RAM from 8Gb

Hi!

I have two PC's based on iP965 and iG33 chipsets, 
both have iC2D Quad 2.4GHz CPU and both have 8Gb (4 x 2Gb)
PC2-6400 RAM.
After installing FreeBSD 7.0R (amd64) and FreeBSD 7.0CURRENT
(amd64) -
on iP965 dmesg show me 2,5Gb of RAM, on iG33 dmesg show
3,1Gb of RAM :(

Can anybody explain to me, does FreeBSD support m/b with 4
memory slot and
8Gb of RAM or not?

Thanks!

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On Mon, May 19, 2008 at 08:49:41PM +0400, Nifty wrote:
> Hi!
> 
> I have two PC's based on iP965 and iG33 chipsets, 
> both have iC2D Quad 2.4GHz CPU and both have 8Gb (4 x
2Gb) PC2-6400 RAM.
> After installing FreeBSD 7.0R (amd64) and FreeBSD
7.0CURRENT (amd64) -
> on iP965 dmesg show me 2,5Gb of RAM, on iG33 dmesg show
3,1Gb of RAM :(
> 
> Can anybody explain to me, does FreeBSD support m/b
with 4 memory slot and
> 8Gb of RAM or not?
> 

Yes, it supports more than 4 Gb.

CPU: AMD Opteron(tm) Processor 248 (2192.35-MHz K8-class
CPU)
  Origin = "AuthenticAMD"  Id = 0xf5a  Stepping =
10
 
Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,API
C,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2&
gt;
  AMD
Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow!+,3DNow!>

usable memory = 8513187840 (8118 MB)
avail memory  = 8249532416 (7867 MB)

troutmask:kargl[208] uname -m
amd64

-- 
Steve
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CPU: Intel(R) Xeon(R) CPU           X5460   3.16GHz
(3158.76-MHz K8-class
CPU)
  Origin = "GenuineIntel"  Id = 0x10676  Stepping
= 6

Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,AP
IC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR
,SSE,SSE2,SS,HTT,TM,PBE>

Features2=0xce3bd<SSE3,RSVD2,MON,DS_CPL,VMX,EST,TM2,SSSE3
,CX16,xTPR,PDCM,DCA,<b19>>
  AMD Features=0x20100800<SYSCALL,NX,LM>
  AMD Features2=0x1<LAHF>
  Cores per package: 4
usable memory = 8571494400 (8174 MB)
avail memory  = 8284160000 (7900 MB)
ACPI APIC Table: <DELL   PE_SC3  >
FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs


On Mon, May 19, 2008 at 2:37 PM, Steve Kargl <
sgktroutmask.apl.washington.edu> wrote:

> On Mon, May 19, 2008 at 08:49:41PM +0400, Nifty wrote:
> > Hi!
> >
> > I have two PC's based on iP965 and iG33 chipsets,
> > both have iC2D Quad 2.4GHz CPU and both have 8Gb
(4 x 2Gb) PC2-6400 RAM.
> > After installing FreeBSD 7.0R (amd64) and FreeBSD
7.0CURRENT (amd64) -
> > on iP965 dmesg show me 2,5Gb of RAM, on iG33 dmesg
show 3,1Gb of RAM :(
> >
> > Can anybody explain to me, does FreeBSD support
m/b with 4 memory slot
> and
> > 8Gb of RAM or not?
> >
>
> Yes, it supports more than 4 Gb.
>
> CPU: AMD Opteron(tm) Processor 248 (2192.35-MHz
K8-class CPU)
>  Origin = "AuthenticAMD"  Id = 0xf5a 
Stepping = 10
>
> 
Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,API
C,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2&
gt;
>  AMD
Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow!+,3DNow!>

> usable memory = 8513187840 (8118 MB)
> avail memory  = 8249532416 (7867 MB)
>
> troutmask:kargl[208] uname -m
> amd64
>
> --
> Steve
> _______________________________________________
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> http://lists.freebsd.org/mailman/listinfo/freebsd-amd64
> To unsubscribe, send any mail to
"freebsd-amd64-unsubscribefreebsd.org"
>



-- 
Bruno Taranto Alvim
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Thanks!

Ok, so FreeBSD can use more than ~3Gb of RAM only on server
platforms? As I
understand from your posts:
I spent one day, try install FreeBSD (7.0 release and
snapshot) and OpenBSD
(4.3 release and snapshot) 
on both of my PC's and get nothing :(

I can see real size of memory only if type 'machine memory'
at boot prompt.
If I do this - I see rest of memory (4+ Gb), as a last
memory region mapped
from 0x100000000 address.
But FreeBSD (and OpenBSD) just ignore this memory :(

Regards,
    Alexandr.

________________________________________
From: Bruno Taranto Alvim [mailto:btarantogmail.com] 
Sent: Monday, May 19, 2008 9:46 PM
To: Nifty; freebsd-amd64freebsd.org
Subject: Re: FreeBSD 7.0R and 7.0CURRENT (amd64) show only
2, 5Gb RAM from
8Gb

CPU: Intel(R) Xeon(R) CPUšššššššššš X5460š  3.16GHz
(3158.76-MHz K8-class
CPU)
š Origin = "GenuineIntel"š Id = 0x10676š Stepping
= 6
š
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,AP
IC,SEP,MTRR,PGE,MCA
,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM
,PBE>
š
Features2=0xce3bd<SSE3,RSVD2,MON,DS_CPL,VMX,EST,TM2,SSSE3
,CX16,xTPR,PDCM,DCA
,<b19>>
š AMD Features=0x20100800<SYSCALL,NX,LM>
š AMD Features2=0x1<LAHF>
š Cores per package: 4
usable memory = 8571494400 (8174 MB)
avail memoryš = 8284160000 (7900 MB)
ACPI APIC Table: <DELLšš PE_SC3š >
FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs

On Mon, May 19, 2008 at 2:37 PM, Steve Kargl
<sgktroutmask.apl.washington.edu> wrote:
On Mon, May 19, 2008 at 08:49:41PM +0400, Nifty wrote:
> Hi!
>
> I have two PC's based on iP965 and iG33 chipsets,
> both have iC2D Quad 2.4GHz CPU and both have 8Gb (4 x
2Gb) PC2-6400 RAM.
> After installing FreeBSD 7.0R (amd64) and FreeBSD
7.0CURRENT (amd64) -
> on iP965 dmesg show me 2,5Gb of RAM, on iG33 dmesg show
3,1Gb of RAM :(
>
> Can anybody explain to me, does FreeBSD support m/b
with 4 memory slot and
> 8Gb of RAM or not?
>

Yes, it supports more than 4 Gb.

CPU: AMD Opteron(tm) Processor 248 (2192.35-MHz K8-class
CPU)
šOrigin = "AuthenticAMD" šId = 0xf5a šStepping =
10
šFeatures=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,AP
IC,SEP,MTRR,PGE,MCA
,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
šAMD
Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow!+,3DNow!>

usable memory = 8513187840 (8118 MB)
avail memory š= 8249532416 (7867 MB)

troutmask:kargl[208] uname -m
amd64

--
Steve
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-- 
Bruno Taranto Alvim 

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On Mon, May 19, 2008 at 11:03:30PM +0400, Nifty wrote:
> 
> Ok, so FreeBSD can use more than ~3Gb of RAM only on
server platforms?

No!  If you have more than 4 Gb.  FreeBSD will use it.
What does 'uname -m' show?  What motherboard do you have?

PS: Please, do not top post.

-- 
Steve
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On Mon, May 19, 2008 at 08:49:41PM +0400, Nifty wrote:
> I have two PC's based on iP965 and iG33 chipsets, 
> both have iC2D Quad 2.4GHz CPU and both have 8Gb (4 x
2Gb) PC2-6400 RAM.
> After installing FreeBSD 7.0R (amd64) and FreeBSD
7.0CURRENT (amd64) -
> on iP965 dmesg show me 2,5Gb of RAM, on iG33 dmesg show
3,1Gb of RAM :(

Do either of the motherboards have a memory-hole related
setting? If so,
does changing it (eg to ignore the memory hole) make more
memory visible to
FreeBSD? This is a common 'issue' with systems that have
more than ~3GiB
RAM - the area of memory reserved for 32-bit PCI devices
(the 'memory hole'
above) can prevent access to memory beyond it.

-mj
-- 
Michael-John Turner 
mjmjturner.net      <>  http://mjturner.net/
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>>No!  If you have more than 4 Gb.  FreeBSD will use
it.
>>What does 'uname -m' show?  What motherboard do you
have?
>>-- 
>>Steve

I have 8Gb of RAM in 4 DIMM's on each system. 

First PC:
	RAM: 8Gb, 4 x 2Gb Corsair PC2-6400 modules
	CPU: Intel C2Q 2.4GHz
	M/B: ASUS Commando (iP965)
	Video: nVidia 6800GS

Second PC:
	RAM: 8Gb, 4 x 2Gb PC2-6400 Patriot modules
	CPU: Intel C2D 2.4GHz
	M/B: Gigabyte GA-G33-DS3R (iG33)
	Video: int.

On both computers I get similar results - for example, on
second PC:

dmesg -------------------------------------

OpenBSD 4.3 (GENERIC.MP) #1582: Wed Mar 12 11:16:45 MDT
2008
    deraadtamd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GEN
ERIC.MP
real mem = 3485982720 (3324MB)
avail mem = 3370606592 (3214MB)
mainbus0 at root
...................

'boot> machine memory' ---------------------

Region 0: type 1 at 0x0 for 634KB
Region 1: type 2 at 0xf0000 for 64KB
Region 2: type 2 at 0xfec00000 for 20480KB
Region 3: type 2 at 0xd0000000 for 262144KB
Region 4: type 2 at 0x9f800 for 2KB
Region 5: type 2 at 0xcfcf0000 for 64KB
Region 6: type 1 at 0x100000 for 3403648KB
Region 7: type 3 at 0xcfce3000 for 52KB
Region 8: type 4 at 0xcfce0000 for 12KB
Region 9: type 1 at 0x100000000 for 4980736KB
Low ram: 634KB High ram: 3403648KB
Total free memory: 8385018KB

--------------------------------------------

Thanks to all for replies!

At this time I can't do more research on this problem, but
at weekend I have
a lot time for testing and get one more PC with i975X
chipset. So, after
Sunday I'll post results of testing x64 versions of FreeBSD
7.0/8.0, Ubuntu
Linux and OpenBSD on my three PC's with 8Gb RAM.

Regards,
    Alexandr.

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Just try boot from Ubuntu Linux 8.04 (amd64) CD on my PC
with ASUS Commando
m/b and 8Gb RAM.
Everything works perfect, linux show ~7,5Gb RAM

---------
P.S. Also FreeBSD/OpenBSD can't work with SATA dvd/r-rw
drives on
ICH8R/ICH9R controllers :( This issue posted to
freebsd-hardware.

Regards,
    Alexandr.

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