AMD CPU 缓存

深藏阁楼爱情的钟 2023-03-04 06:31 52阅读 0赞

*  CPU逻辑核总数

# nproc --all
    128

# lscpu
    
    L1d 缓存：       32K
    L1i 缓存：       32K
    L2 缓存：        512K
    L3 缓存：        16384K

# dmidecode -t cache
    # dmidecode 3.1
    Getting SMBIOS data from sysfs.
    SMBIOS 3.2.0 present.
    # SMBIOS implementations newer than version 3.1.1 are not
    # fully supported by this version of dmidecode.
    
    Handle 0x000C, DMI type 7, 27 bytes
    Cache Information
    	Socket Designation: L1 - Cache
    	Configuration: Enabled, Not Socketed, Level 1
    	Operational Mode: Write Back
    	Location: Internal
    	Installed Size: 4096 kB								  缓存大小
    	Maximum Size: 4096 kB								   4MB
    	Supported SRAM Types:
    		Pipeline Burst
    	Installed SRAM Type: Pipeline Burst
    	Speed: 1 ns
    	Error Correction Type: Multi-bit ECC
    	System Type: Unified
    	Associativity: 8-way Set-associative
    
    Handle 0x000D, DMI type 7, 27 bytes
    Cache Information
    	Socket Designation: L2 - Cache
    	Configuration: Enabled, Not Socketed, Level 2
    	Operational Mode: Write Back
    	Location: Internal
    	Installed Size: 32768 kB									
    	Maximum Size: 32768 kB								32MB
    	Supported SRAM Types:
    		Pipeline Burst
    	Installed SRAM Type: Pipeline Burst
    	Speed: 1 ns
    	Error Correction Type: Multi-bit ECC
    	System Type: Unified
    	Associativity: 8-way Set-associative
    
    Handle 0x000E, DMI type 7, 27 bytes
    Cache Information
    	Socket Designation: L3 - Cache
    	Configuration: Enabled, Not Socketed, Level 3
    	Operational Mode: Write Back
    	Location: Internal
    	Installed Size: 262144 kB
    	Maximum Size: 262144 kB								256MB 	
    	Supported SRAM Types:
    		Pipeline Burst
    	Installed SRAM Type: Pipeline Burst
    	Speed: 1 ns
    	Error Correction Type: Multi-bit ECC
    	System Type: Unified
    	Associativity: 16-way Set-associative

# lshw -C memory
    
      *-cache:0
           description: L1 cache
           physical id: c
           slot: L1 - Cache
           size: 4MiB
           capacity: 4MiB
           clock: 1GHz (1.0ns)
           capabilities: pipeline-burst internal write-back unified
           configuration: level=1
      *-cache:1
           description: L2 cache
           physical id: d
           slot: L2 - Cache
           size: 32MiB
           capacity: 32MiB
           clock: 1GHz (1.0ns)
           capabilities: pipeline-burst internal write-back unified
           configuration: level=2
      *-cache:2
           description: L3 cache
           physical id: e
           slot: L3 - Cache
           size: 256MiB
           capacity: 256MiB
           clock: 1GHz (1.0ns)
           capabilities: pipeline-burst internal write-back unified
           configuration: level=3

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

参考：

1.  [【Linux基础】查看硬件信息-CPU][Linux_-CPU]
2.  [AMD Ryzen™ Threadripper™ 3990X][AMD Ryzen_ Threadripper_ 3990X]
3.  [CPU Cache 机制以及 Cache miss][CPU Cache _ Cache miss]
4.  [有什么方法可以知道Linux中L1，L2，L3缓存和RAM的大小吗？][Linux_L1_L2_L3_RAM]

[Linux_-CPU]: https://www.cnblogs.com/badboy200800/p/10606405.html
[AMD Ryzen_ Threadripper_ 3990X]: https://www.amd.com/zh-hans/products/cpu/amd-ryzen-threadripper-3990x
[CPU Cache _ Cache miss]: https://www.cnblogs.com/jokerjason/p/10711022.html
[Linux_L1_L2_L3_RAM]: https://qastack.cn/unix/167038/is-there-any-way-to-know-the-size-of-l1-l2-l3-cache-and-ram-in-linux