[gull] Memory: 8179320k/8912896k available (3312k kernel code, 528920k absent
Marc Mongenet
marc at mongenet.ch
Mon Jan 25 01:47:28 CET 2010
Bonjour,
Merci pour l'analyse.
Le 24 janvier 2010 23:20, Yves Martin <ymartin59 at free.fr> a écrit :
>
> C'est intéressant, surtout pour une trace qui apparaît au début du boot,
> donc justement à la mise en place des structures en mémoire.
Je viens de me rendre compte que le principal m'avait échappé:
dmesg m'indique un total de 8912896 ko de RAM, ce qui ne fait
pas 8 Go, mais exactement 8,5 Go. Or j'ai une carte graphique
avec 512 Mo de RAM...
C'est un peu bizarre de retrouver la RAM de la carte graphique
additionnée à la RAM classique. Peut-être un effet de bord de
l'intégration des fonctionnalités graphiques dans le noyau ?
J'ai une carte Radeon et j'utilise les drivers Open Source.
> Il faudrait regarder la section "BIOS-provided physical RAM map" du log
> "dmesg". Tu devrais y trouver les 512 Mo de RAM manquants.
Le BIOS-e820 me donne 7.99560356 Go de RAM, c'est à peu
près correct.
> Je pense à une attribution de RAM par le BIOS à un chipset graphique par
> exemple. Pour confirmer, je te propose de faire un tour dans le BIOS,
> changer la configuration mémoire du chipset et comparer le résultat au
> boot.
Finalement le BIOS a l'air plus logique que le noyau. :)
> Ton système indique 200 Mo "reserved". C'est beaucoup et cela
> s'expliquerait par une compilation "maison" en incluant pas mal de
> drivers directement dans le kernel (pas sous forme de modules).
> Pour les modules, lsmod indique la mémoire consommée.
J'ai le noyau Arch Linux standard. Les 200 Mo font 2,5 % de la RAM,
est-ce une part réservée importante?
>
> Tu peux envoyer la sortie de "dmidecode" en plus du dmesg pour aider à
> comprendre ton hardware...
Voici le (long) résultat:
# dmidecode 2.10
SMBIOS 2.4 present.
40 structures occupying 1214 bytes.
Table at 0x000F0100.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: Award Software International, Inc.
Version: F2
Release Date: 08/01/2009
Address: 0xE0000
Runtime Size: 128 kB
ROM Size: 2048 kB
Characteristics:
PCI is supported
PNP is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
EDD is supported
5.25"/360 kB floppy services are supported (int 13h)
5.25"/1.2 MB floppy services are supported (int 13h)
3.5"/720 kB floppy services are supported (int 13h)
3.5"/2.88 MB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
CGA/mono video services are supported (int 10h)
ACPI is supported
USB legacy is supported
LS-120 boot is supported
ATAPI Zip drive boot is supported
BIOS boot specification is supported
Targeted content distribution is supported
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: P55-UD3R
Version:
Serial Number:
UUID: 00000000-0000-0000-0000-00241DD3708B
Wake-up Type: Power Switch
SKU Number:
Family:
Handle 0x0002, DMI type 2, 8 bytes
Base Board Information
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: P55-UD3R
Version: x.x
Serial Number:
Handle 0x0003, DMI type 3, 17 bytes
Chassis Information
Manufacturer: Gigabyte Technology Co., Ltd.
Type: Desktop
Lock: Not Present
Version:
Serial Number:
Asset Tag:
Boot-up State: Unknown
Power Supply State: Unknown
Thermal State: Unknown
Security Status: Unknown
OEM Information: 0x00000000
Handle 0x0004, DMI type 4, 35 bytes
Processor Information
Socket Designation: Socket 1156
Type: Central Processor
Family: Other
Manufacturer: Intel
ID: E5 06 01 00 FF FB EB BF
Version: Intel(R) Core(TM) i7 CPU
Voltage: 1.0 V
External Clock: 133 MHz
Max Speed: 4000 MHz
Current Speed: 2800 MHz
Status: Populated, Enabled
Upgrade: Socket 478
L1 Cache Handle: 0x000A
L2 Cache Handle: 0x000B
L3 Cache Handle: Not Provided
Serial Number:
Asset Tag:
Part Number:
Handle 0x0005, DMI type 5, 24 bytes
Memory Controller Information
Error Detecting Method: 8-bit Parity
Error Correcting Capabilities:
None
Supported Interleave: One-way Interleave
Current Interleave: One-way Interleave
Maximum Memory Module Size: 1024 MB
Maximum Total Memory Size: 4096 MB
Supported Speeds:
Other
Supported Memory Types:
Other
Memory Module Voltage: 5.0 V
Associated Memory Slots: 4
0x0006
0x0007
0x0008
0x0009
Enabled Error Correcting Capabilities:
None
Handle 0x0006, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: A0
Bank Connections: 1
Current Speed: Unknown
Type: Other
Installed Size: 2048 MB (Single-bank Connection)
Enabled Size: 2048 MB (Single-bank Connection)
Error Status: OK
Handle 0x0007, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: A1
Bank Connections: 2
Current Speed: Unknown
Type: Other
Installed Size: 2048 MB (Single-bank Connection)
Enabled Size: 2048 MB (Single-bank Connection)
Error Status: OK
Handle 0x0008, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: A2
Bank Connections: 3
Current Speed: Unknown
Type: Other
Installed Size: 2048 MB (Single-bank Connection)
Enabled Size: 2048 MB (Single-bank Connection)
Error Status: OK
Handle 0x0009, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: A3
Bank Connections: 4
Current Speed: Unknown
Type: Other
Installed Size: 2048 MB (Single-bank Connection)
Enabled Size: 2048 MB (Single-bank Connection)
Error Status: OK
Handle 0x000A, DMI type 7, 19 bytes
Cache Information
Socket Designation: Internal Cache
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 64 kB
Maximum Size: 64 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Unknown
System Type: Unknown
Associativity: Unknown
Handle 0x000B, DMI type 7, 19 bytes
Cache Information
Socket Designation: External Cache
Configuration: Enabled, Not Socketed, Level 2
Operational Mode: Write Back
Location: Internal
Installed Size: 8192 kB
Maximum Size: 2048 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Unknown
System Type: Unknown
Associativity: Unknown
Handle 0x000C, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: PRIMARY IDE
Internal Connector Type: On Board IDE
External Reference Designator:
External Connector Type: None
Port Type: Other
Handle 0x000D, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: SECONDARY IDE
Internal Connector Type: On Board IDE
External Reference Designator:
External Connector Type: None
Port Type: Other
Handle 0x000E, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: FDD
Internal Connector Type: On Board Floppy
External Reference Designator:
External Connector Type: None
Port Type: 8251 FIFO Compatible
Handle 0x000F, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: COM1
Internal Connector Type: 9 Pin Dual Inline (pin 10 cut)
External Reference Designator:
External Connector Type: DB-9 male
Port Type: Serial Port 16450 Compatible
Handle 0x0010, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: COM2
Internal Connector Type: 9 Pin Dual Inline (pin 10 cut)
External Reference Designator:
External Connector Type: DB-9 male
Port Type: Serial Port 16450 Compatible
Handle 0x0011, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: LPT1
Internal Connector Type: DB-25 female
External Reference Designator:
External Connector Type: DB-25 female
Port Type: Parallel Port ECP/EPP
Handle 0x0012, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: Keyboard
Internal Connector Type: Other
External Reference Designator:
External Connector Type: PS/2
Port Type: Keyboard Port
Handle 0x0013, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: PS/2 Mouse
Internal Connector Type: PS/2
External Reference Designator: No Detected
External Connector Type: PS/2
Port Type: Mouse Port
Handle 0x0014, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB
Internal Connector Type: None
External Reference Designator:
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0015, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB
Internal Connector Type: None
External Reference Designator:
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0016, DMI type 9, 13 bytes
System Slot Information
Designation: PCI
Type: 32-bit PCI
Current Usage: Available
Length: Long
ID: 2
Characteristics:
5.0 V is provided
3.3 V is provided
PME signal is supported
SMBus signal is supported
Handle 0x0017, DMI type 9, 13 bytes
System Slot Information
Designation: PCI
Type: 32-bit PCI
Current Usage: Available
Length: Long
ID: 3
Characteristics:
5.0 V is provided
3.3 V is provided
PME signal is supported
SMBus signal is supported
Handle 0x0018, DMI type 9, 13 bytes
System Slot Information
Designation: PCI
Type: 32-bit PCI
Current Usage: In Use
Length: Long
ID: 4
Characteristics:
5.0 V is provided
3.3 V is provided
PME signal is supported
SMBus signal is supported
Handle 0x0019, DMI type 9, 13 bytes
System Slot Information
Designation: PCI
Type: 32-bit PCI
Current Usage: Available
Length: Long
ID: 5
Characteristics:
5.0 V is provided
3.3 V is provided
PME signal is supported
SMBus signal is supported
Handle 0x001A, DMI type 13, 22 bytes
BIOS Language Information
Installable Languages: 3
n|US|iso8859-1
n|US|iso8859-1
r|CA|iso8859-1
Currently Installed Language: n|US|iso8859-1
Handle 0x001B, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 32 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Handle 0x001C, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x001B
Error Information Handle: Not Provided
Total Width: 2304 bits
Data Width: 2244 bits
Size: 2048 MB
Form Factor: DIMM
Set: None
Locator: A0
Bank Locator: Bank0/1
Type: Unknown
Type Detail: None
Speed: 1333 MHz
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x001D, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x001B
Error Information Handle: Not Provided
Total Width: 2304 bits
Data Width: 2244 bits
Size: 2048 MB
Form Factor: DIMM
Set: None
Locator: A1
Bank Locator: Bank2/3
Type: Unknown
Type Detail: None
Speed: 1333 MHz
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x001E, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x001B
Error Information Handle: Not Provided
Total Width: 2304 bits
Data Width: 2244 bits
Size: 2048 MB
Form Factor: DIMM
Set: None
Locator: A2
Bank Locator: Bank4/5
Type: Unknown
Type Detail: None
Speed: 1333 MHz
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x001F, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x001B
Error Information Handle: Not Provided
Total Width: 2304 bits
Data Width: 2244 bits
Size: 2048 MB
Form Factor: DIMM
Set: None
Locator: A3
Bank Locator: Bank6/7
Type: Unknown
Type Detail: None
Speed: 1333 MHz
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x0020, DMI type 19, 15 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x001FFFFFFFF
Range Size: 8 GB
Physical Array Handle: 0x001B
Partition Width: 32
Handle 0x0021, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0007FFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x001C
Memory Array Mapped Address Handle: 0x0020
Partition Row Position: 1
Handle 0x0022, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00080000000
Ending Address: 0x000FFFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x001D
Memory Array Mapped Address Handle: 0x0020
Partition Row Position: 1
Handle 0x0023, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00100000000
Ending Address: 0x0017FFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x001E
Memory Array Mapped Address Handle: 0x0020
Partition Row Position: 1
Handle 0x0024, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00180000000
Ending Address: 0x001FFFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x001F
Memory Array Mapped Address Handle: 0x0020
Partition Row Position: 1
Handle 0x0025, DMI type 32, 11 bytes
System Boot Information
Status: No errors detected
Handle 0x0026, DMI type 64, 13 bytes
Unknown Type
Header and Data:
40 0D 26 00 FF FF FF FF FF FF FF FF FF
Strings:
Handle 0x0027, DMI type 127, 4 bytes
End Of Table
Marc
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