Hi all,

I use the Debian 4.0r3 and have 4Gb ram, the cpu is pentium D 3.00 Ghz.

I have installed the kernel 2.6.18-6-686-bigmem but the system cann't recognize all of the 4Gb memory on my system still. Who can give me some hints?

Sincerely yours,
--------------
Hongsheng Zhao <zhaohscas@yahoo.com.cn>
Xinjiang Technical Institute of Physics and Chemistry
Chinese Academy of Sciences
GnuPG DSA: 0xD10849
2008-07-02

__________________________________________________
¸Ï¿ì×¢²áÑÅ»¢³¬´óÈÝÁ¿Ãâ·ÑÓÊÏä?
http://cn.mail.yahoo.com


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2008/7/2 zhaohscas <zhaohscas@yahoo.com.cn>:
> Hi all,
>
> I use the Debian 4.0r3 and have 4Gb ram, the cpu is pentium D 3.00 Ghz.
>
> I have installed the kernel 2.6.18-6-686-bigmem but the system cann't recognize all of the 4Gb memory on my system still. Who can give me some hints?

Maybe you can try the AMD64 etch, i think your cpu should be a EM64T cpu.

>
> Sincerely yours,
> --------------
> Hongsheng Zhao <zhaohscas@yahoo.com.cn>
> Xinjiang Technical Institute of Physics and Chemistry
> Chinese Academy of Sciences
> GnuPG DSA: 0xD10849
> 2008-07-02
>



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Regards!
Star
http://starliu.9966.org
Shanghai, China


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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 07/02/08 05:15, zhaohscas wrote:
> Hi all,
>
> I use the Debian 4.0r3 and have 4Gb ram, the cpu is pentium D 3.00 Ghz.
>
> I have installed the kernel 2.6.18-6-686-bigmem but the system
> cann't recognize all of the 4Gb memory on my system still. Who can
> give me some hints?

How much *does* it recognize?

- --
Ron Johnson, Jr.
Jefferson LA USA

"Kittens give Morbo gas. In lighter news, the city of New New
York is doomed."
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Version: GnuPG v1.4.9 (GNU/Linux)

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kHMAn3E4gt2NVvTYvKKnaY1RZmurDIpC
=ERy9
-----END PGP SIGNATURE-----


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On Wed, Jul 2, 2008 at 6:59 PM, Ron Johnson <ron.l.johnson@cox.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On 07/02/08 05:15, zhaohscas wrote:
>> Hi all,
>>
>> I use the Debian 4.0r3 and have 4Gb ram, the cpu is pentium D 3.00 Ghz.
>>
>> I have installed the kernel 2.6.18-6-686-bigmem but the system
>> cann't recognize all of the 4Gb memory on my system still. Who can
>> give me some hints?
>
> How much *does* it recognize?

I'm not sure, but according to the property of CPU, 64bit CPU has much
better support for bigger memory addresses, at least 40bits address
are supported.

>
> - --
> Ron Johnson, Jr.
> Jefferson LA USA
>
> "Kittens give Morbo gas. In lighter news, the city of New New
> York is doomed."
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.9 (GNU/Linux)
>




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Regards!
Star
http://starliu.9966.org
Shanghai, China


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-----BEGIN PGP SIGNED MESSAGE-----
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On 07/02/08 06:06, Star Liu wrote:
> On Wed, Jul 2, 2008 at 6:59 PM, Ron Johnson <ron.l.johnson@cox.net> wrote:
>>
>> On 07/02/08 05:15, zhaohscas wrote:
>>> Hi all,
>>>
>>> I use the Debian 4.0r3 and have 4Gb ram, the cpu is pentium D 3.00 Ghz.
>>>
>>> I have installed the kernel 2.6.18-6-686-bigmem but the system
>>> cann't recognize all of the 4Gb memory on my system still. Who can
>>> give me some hints?
>> How much *does* it recognize?

(Thank you for bottom-posting.)

> I'm not sure, but according to the property of CPU, 64bit CPU has much
> better support for bigger memory addresses, at least 40bits address
> are supported.

$ cat /proc/meminfo

Also, soon after a boot:
$ dmesg | less

- --
Ron Johnson, Jr.
Jefferson LA USA

"Kittens give Morbo gas. In lighter news, the city of New New
York is doomed."
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)

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=jInc
-----END PGP SIGNATURE-----


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>> I use the Debian 4.0r3 and have 4Gb ram, the cpu is pentium D 3.00 Ghz.
>>
>> I have installed the kernel 2.6.18-6-686-bigmem but the system
>> cann't recognize all of the 4Gb memory on my system still. Who can
>> give me some hints?
>
>How much *does* it recognize?

The cat /proc/meminfo will give the following:
MemTotal: 3506404 kB

FYI, I've post you all the info my box give me here in the following:

------------------------------
hongyi@dftwerner:~$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 6
model name : Intel(R) Pentium(R) D CPU 3.00GHz
stepping : 5
cpu MHz : 2999.949
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl est cid cx16 xtpr lahf_lm
bogomips : 6004.90

processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 6
model name : Intel(R) Pentium(R) D CPU 3.00GHz
stepping : 5
cpu MHz : 2999.949
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl est cid cx16 xtpr lahf_lm
bogomips : 5999.88

hongyi@dftwerner:~$ cat /proc/meminfo
MemTotal: 3506404 kB
MemFree: 2854108 kB
Buffers: 9760 kB
Cached: 489648 kB
SwapCached: 0 kB
Active: 124996 kB
Inactive: 448956 kB
HighTotal: 2620284 kB
HighFree: 2048040 kB
LowTotal: 886120 kB
LowFree: 806068 kB
SwapTotal: 8835740 kB
SwapFree: 8835740 kB
Dirty: 216 kB
Writeback: 0 kB
AnonPages: 74528 kB
Mapped: 32468 kB
Slab: 56564 kB
PageTables: 2436 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 10588940 kB
Committed_AS: 160952 kB
VmallocTotal: 118776 kB
VmallocUsed: 15752 kB
VmallocChunk: 102740 kB

hongyi@dftwerner:~$ uname -a
Linux dftwerner 2.6.18-6-686-bigmem #1 SMP Sun Feb 10 22:21:07 UTC 2008 i686 GNU/Linux
---------------------------------

Sincerely yours,
Hongsheng.


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>On 07/02/08 05:15, zhaohscas wrote:
>> Hi all,
>>
>> I use the Debian 4.0r3 and have 4Gb ram, the cpu is pentium D 3.00 Ghz.
>>
>> I have installed the kernel 2.6.18-6-686-bigmem but the system
>> cann't recognize all of the 4Gb memory on my system still. Who can
>> give me some hints?

>How much *does* it recognize?

The cat /proc/meminfo will give the following:
MemTotal: 3506404 kB

The BIOS give the following info:
Full installed memory: 4096M.

Sincerely yours,
Hongsheng.


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On Wednesday 02 July 2008 14:28:46 zhaohscas wrote:
> >On 07/02/08 05:15, zhaohscas wrote:
> >> Hi all,
> >>
> >> I use the Debian 4.0r3 and have 4Gb ram, the cpu is pentium D 3.00 Ghz.
> >>
> >> I have installed the kernel 2.6.18-6-686-bigmem but the system
> >> cann't recognize all of the 4Gb memory on my system still. Who can
> >> give me some hints?
> >
> >How much *does* it recognize?
>
> The cat /proc/meminfo will give the following:
> MemTotal: 3506404 kB
>
> The BIOS give the following info:
> Full installed memory: 4096M.
>
> Sincerely yours,
> Hongsheng.

maybe your bios is taking some memory space for the video. I have seen
articles about it. Maybe google can be your friend.


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>Also, soon after a boot:
>$ dmesg | less

See following:

--------------------
Linux version 2.6.18-6-686-bigmem (Debian 2.6.18.dfsg.1-18etch1) (waldi@debian.org) (gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)) #1 SMP Sun Feb 10 22:21:07 UTC 2008
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 00000000d7edf800 (usable)
BIOS-e820: 00000000d7edf800 - 00000000d7ee0000 (reserved)
BIOS-e820: 00000000d7ee0000 - 00000000d7ee3000 (ACPI NVS)
BIOS-e820: 00000000d7ee3000 - 00000000d7ef0000 (ACPI data)
BIOS-e820: 00000000d7ef0000 - 00000000d7f00000 (reserved)
BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
2558MB HIGHMEM available.
896MB LOWMEM available.
found SMP MP-table at 000f3700
NX (Execute Disable) protection: active
On node 0 totalpages: 884447
DMA zone: 4096 pages, LIFO batch:0
Normal zone: 225280 pages, LIFO batch:31
HighMem zone: 655071 pages, LIFO batch:31
DMI 2.4 present.
ACPI: RSDP (v000 FOUNDR ) @ 0x000f7620
ACPI: RSDT (v001 FOUNDR FOUNDRPC 0x42302e31 AWRD 0x00000000) @ 0xd7ee3040
ACPI: FADT (v001 FOUNDR FOUNDRPC 0x42302e31 AWRD 0x00000000) @ 0xd7ee30c0
ACPI: MCFG (v001 FOUNDR FOUNDRPC 0x42302e31 AWRD 0x00000000) @ 0xd7ee7940
ACPI: SLIC (v001 FOUNDR FOUNDRPC 0x42302e31 AWRD 0x00000000) @ 0xd7ee79c0
ACPI: MADT (v001 FOUNDR FOUNDRPC 0x42302e31 AWRD 0x00000000) @ 0xd7ee7840
ACPI: SSDT (v001 PmRef Cpu0Ist 0x00003000 INTL 0x20041203) @ 0xd7ee7a30
ACPI: SSDT (v001 PmRef CpuPm 0x00003000 INTL 0x20041203) @ 0xd7ee7ec0
ACPI: DSDT (v001 FOUNDR FOUNDRPC 0x00001000 MSFT 0x0100000e) @ 0x00000000
ACPI: PM-Timer IO Port: 0x408
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 15:6 APIC version 20
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
Processor #1 15:6 APIC version 20
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
ACPI: IOAPIC (id[0x04] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 4, version 32, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Enabling APIC mode: Flat. Using 1 I/O APICs
Using ACPI (MADT) for SMP configuration information
Allocating PCI resources starting at f1000000 (gap: f0000000:0ec00000)
Detected 2999.853 MHz processor.
Built 1 zonelists. Total pages: 884447
Kernel command line: root=/dev/sda2 ro
mapped APIC to ffffd000 (fee00000)
mapped IOAPIC to ffffc000 (fec00000)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 16384 bytes)
Console: colour VGA+ 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 3500584k/3537788k available (1542k kernel code, 35988k reserved, 587k data, 196k init, 2620284k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 6004.89 BogoMIPS (lpj=12009799)
Security Framework v1.0.0 initialized
SELinux: Disabled at boot.
Capability LSM initialized
Mount-cache hash table entries: 512

.......
---------------------

Sincerely yours,
Hongsheng.


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On Wed, Jul 2, 2008 at 1:45 PM, zhaohscas <zhaohscas@yahoo.com.cn> wrote:
>>Also, soon after a boot:
>>$ dmesg | less

My guess: Intel chipset limitation? (know to affect certain 915nn and
945nn chipsets)

See:
http://support.microsoft.com/kb/929605/en-us

(and yes, I already know that you're not using an MS OS, but the
article describes the "hardware" limitations). More info available if
you search the Intel chipset specs. I could, of course, be wrong...

HTH.


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