최근에 4x8GB RAM이 장착된 새 데스크톱 컴퓨터를 구입했습니다. 그러나 운영 체제(Ubuntu 16.04, 64비트)에서는 32GB가 아닌 24GB RAM만 보고합니다. 스틱을 물리적으로 점검했으며 올바르게 설치되었습니다.
OS가 약간의 메모리를 차지할 수 있다는 것을 알고 있지만 8GB RAM이 부족하고 3x8이 24와 같기 때문에 나보다 경험이 많은 사람에게 물어봐야 한다고 생각했습니다. 일부 도구는 상충되는 정보를 제공합니다(아래 언급). 무슨 일이 일어나고 있는지 잘 모르겠고 문제를 해결하는 방법을 찾을 수 없어서 여기에 게시합니다.
나부터 시작하자관련 하드웨어:
- 마더보드: Asrock 970M Pro3 970(최대 64GB 지원)
- 메모리: G.Skill D332GB 1600-999 RipjawsX K4 GSK, 4x8GB
- GPU: ASUS 4GB D5 GTX 1050 TI PH(GPU가 일부 RAM을 차지한다는 내용을 읽었는데, 여기서 중요한지는 잘 모르겠습니다...)
내가 시도한 것:
여기서부터 흥미로워집니다...
- BIOS가 4개의 RAM 스틱을 모두 올바르게 보고합니다.
sudo dmidecode --type memory또한 스틱 4개를 모두 감지합니다.sudo lshw -class memory32GB RAM도 표시됩니다.
하지만...
- "이 컴퓨터 정보" 보고서 23.5GiB
htop23.5G도 보고됨cat /proc/meminfo출력 24660520kBfree -m24082MB RAM 참조- memtest를 실행하면 24GB RAM만 테스트되었습니다(버그가 발견되지 않음).
무슨 일인지 설명해 줄 수 있는 사람 있나요? 이는 예상된 동작입니까, 아니면 뭔가 잘못된 것입니까?
이건 완전해명령 출력위에 언급했듯이:
sudo dmidecode --유형 메모리
# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.
Handle 0x000D, DMI type 16, 23 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 0x000F, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x000D
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: None
Locator: A1_DIMM0
Bank Locator: A1_BANK0
Type: DDR3
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 1333 MHz
Manufacturer: Undefined
Serial Number: 00000000
Asset Tag: A1_AssetTagNum0
Part Number: F3-1600C9-8GXM
Rank: 2
Configured Clock Speed: 667 MHz
Handle 0x0011, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x000D
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: None
Locator: A1_DIMM1
Bank Locator: A1_BANK1
Type: DDR3
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 1333 MHz
Manufacturer: Undefined
Serial Number: 00000000
Asset Tag: A1_AssetTagNum1
Part Number: F3-1600C9-8GXM
Rank: 2
Configured Clock Speed: 667 MHz
Handle 0x0013, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x000D
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: None
Locator: A1_DIMM2
Bank Locator: A1_BANK2
Type: DDR3
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 1333 MHz
Manufacturer: Undefined
Serial Number: 00000000
Asset Tag: A1_AssetTagNum2
Part Number: F3-1600C9-8GXM
Rank: 2
Configured Clock Speed: 667 MHz
Handle 0x0015, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x000D
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: None
Locator: A1_DIMM3
Bank Locator: A1_BANK3
Type: DDR3
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 1333 MHz
Manufacturer: Undefined
Serial Number: 00000000
Asset Tag: A1_AssetTagNum3
Part Number: F3-1600C9-8GXM
Rank: 2
Configured Clock Speed: 667 MHz
sudo lshw 레벨 메모리
*-firmware
description: BIOS
vendor: American Megatrends Inc.
physical id: 0
version: P1.60
date: 06/17/2016
size: 64KiB
capacity: 4032KiB
capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi
*-cache:0
description: L1 cache
physical id: 5
slot: L1-Cache
size: 384KiB
capacity: 384KiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=1
*-cache:1
description: L2 cache
physical id: 6
slot: L2-Cache
size: 8MiB
capacity: 8MiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=2
*-cache:2
description: L3 cache
physical id: 7
slot: L3-Cache
size: 8MiB
capacity: 8MiB
clock: 1GHz (1.0ns)
capabilities: pipeline-burst internal write-back unified
configuration: level=3
*-memory
description: System Memory
physical id: d
slot: System board or motherboard
size: 32GiB
*-bank:0
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: F3-1600C9-8GXM
vendor: Undefined
physical id: 0
serial: 00000000
slot: A1_DIMM0
size: 8GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:1
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: F3-1600C9-8GXM
vendor: Undefined
physical id: 1
serial: 00000000
slot: A1_DIMM1
size: 8GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:2
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: F3-1600C9-8GXM
vendor: Undefined
physical id: 2
serial: 00000000
slot: A1_DIMM2
size: 8GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:3
description: DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: F3-1600C9-8GXM
vendor: Undefined
physical id: 3
serial: 00000000
slot: A1_DIMM3
size: 8GiB
width: 64 bits
clock: 1333MHz (0.8ns)
고양이/proc/meminfo
MemTotal: 24660520 kB
MemFree: 21122376 kB
MemAvailable: 21926440 kB
Buffers: 140544 kB
Cached: 963872 kB
SwapCached: 0 kB
Active: 2574684 kB
Inactive: 554432 kB
Active(anon): 2027416 kB
Inactive(anon): 71840 kB
Active(file): 547268 kB
Inactive(file): 482592 kB
Unevictable: 48 kB
Mlocked: 48 kB
SwapTotal: 25137148 kB
SwapFree: 25137148 kB
Dirty: 72 kB
Writeback: 0 kB
AnonPages: 2024884 kB
Mapped: 426756 kB
Shmem: 74552 kB
Slab: 170052 kB
SReclaimable: 120684 kB
SUnreclaim: 49368 kB
KernelStack: 11760 kB
PageTables: 48856 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 37467408 kB
Committed_AS: 8069992 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 397312 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 277632 kB
DirectMap2M: 7032832 kB
DirectMap1G: 19922944 kB
자유-m
total used free shared buff/cache available
Mem: 24082 2263 20553 68 1264 21364
Swap: 24547 0 24547