Linux下查看CPU Cache資訊

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上載者:User

Linux下查看CPU Cache級數,每級大小

 

(1) 第一種方法:
dmesg | grep cache

 

(2) 第二種方法:

[root@gc15 ~]# ls /sys/devices/system/cpu/cpu0/cache/index
index0/ index1/ index2/ index3/

一級cache, Data cache

index0和Index1是一級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
一級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

二級cache,共用的
[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

三級cache,共用的
[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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