1. linux cpu l2 cache怎麼看
緩存信息:
[root@bj4adb2 ~]# dmidecode -t cache | more
# dmidecode 2.11
SMBIOS 2.7 present.
Handle 0x0710, DMI type 7, 19 bytes
Cache Information
Socket Designation: Processor 1 Internal L1 Cache #第一個CPU的L1信息
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 192 kB #192kB大小，192kB/core count per socket =32kB，是這個CPU的L1指令和數據cache的大小
Maximum Size: 320 kB
Supported SRAM Types:
Burst
Installed SRAM Type: Burst
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Data
Associativity: 8-way Set-associative
……
Handle 0x0720, DMI type 7, 19 bytes
Cache Information
Socket Designation: Processor 1 Internal L2 Cache #第一個CPU的L2 cache
Configuration: Enabled, Not Socketed, Level 2
Operational Mode: Write Back
Location: Internal
Installed Size: 1536 kB #1536/6 cores per socket=256kB
Maximum Size: 2560 kB
Supported SRAM Types:
Burst
Installed SRAM Type: Burst
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Unknown
Associativity: 8-way Set-associative
……