Linux查看cpu缓存

2.查看cpu各级缓存大小

ls /sys/devices/system/cpu/cpu0/cache/

cat /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size

一、Linux下查看CPU Cache级数，每级大小

(1) 第一种方法:

dmesg | grep cache

(2) 第二种方法:

[root@gc15 ~]# ls /sys/devices/system/cpu/cpu0/cache/index

index0/ index1/ index2/ index3/

一级cache, Data cache

index0和Index1是一级cache中的data和instruction cache

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index0/level

1

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index0/type

Data

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index0/size

32K

一级cache, Instruction cache

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index1/level

1

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index1/type

Instruction

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index1/size

32K

二级cache，共享的

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index2/level

2

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index3/type

Unified

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index2/size

256K

三级cache，共享的

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index3/level

3

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index3/type

Unified

[root@gc15 ~]# cat /sys/devices/system/cpu/cpu0/cache/index3/size

12288K

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