У меня CentOS 6.4 работает на блейд-сервере HP ProLiant BL460c G7. У меня на блейд-сервере HP установлена память DIMM 6 * 8 ГБ.
Когда я использую dmidecode --type memory, я получаю следующий вывод
Handle 0x1000, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: Single-bit ECC
Maximum Capacity: 192 GB
Error Information Handle: Not Provided
Number Of Devices: 6
Handle 0x1001, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: Single-bit ECC
Maximum Capacity: 192 GB
Error Information Handle: Not Provided
Number Of Devices: 6
Handle 0x1100, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 1
Locator: PROC 1 DIMM 1D
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Handle 0x1101, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: 2
Locator: PROC 1 DIMM 2A
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MHz
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: 2
Configured Clock Speed: 1333 MHz
Handle 0x1102, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 3
Locator: PROC 1 DIMM 3E
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Handle 0x1103, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: 4
Locator: PROC 1 DIMM 4B
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MHz
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: 2
Configured Clock Speed: 1333 MHz
Handle 0x1104, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 5
Locator: PROC 1 DIMM 5F
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Handle 0x1105, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: 6
Locator: PROC 1 DIMM 6C
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MHz
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: 2
Configured Clock Speed: 1333 MHz
Handle 0x1106, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1001
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 7
Locator: PROC 2 DIMM 1D
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Handle 0x1107, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1001
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: 8
Locator: PROC 2 DIMM 2A
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MHz
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: 2
Configured Clock Speed: 1333 MHz
Handle 0x1108, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1001
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 9
Locator: PROC 2 DIMM 3E
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Handle 0x1109, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1001
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: 10
Locator: PROC 2 DIMM 4B
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MHz
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: 2
Configured Clock Speed: 1333 MHz
Handle 0x110A, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1001
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 11
Locator: PROC 2 DIMM 5F
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: Unknown
Configured Clock Speed: Unknown
Handle 0x110B, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x1001
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: 12
Locator: PROC 2 DIMM 6C
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MHz
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Rank: 2
Configured Clock Speed: 1333 MHz
но когда я набираю free -m, он показывает только 16 ГБ. Я не понимаю, в чем проблема. Пожалуйста помоги.
total used free shared buffers cached
Mem: 15914 4697 11216 0 226 3385
-/+ buffers/cache: 1085 14828
Swap: 18095 52 18043
Вы должны использовать 64-битную систему, чтобы адресовать столько первичной памяти. Тот факт, что вы можете адресовать все, что выходит за рамки ~ 4G, - это благодаря PAE, который является способом логического расширения карты памяти для 32-битных систем. Как видите, масштаб не очень велик.
Поэтому переустановите с использованием дистрибутива amd64, и вы сможете адресовать остальную часть своей памяти.