Explore the parameters of the cache with cpuid
Example on my Intel Core i5-5200U:
$ make
$ ./cacheid
-- Level: 1 (data cache)
Not inclusive of lower cache levels
Cache addressing: direct mapped cache
Line size: 64
Number of ways: 8
Number of sets: 64
Raw results:
0x00000004 0x00: eax=0x1c004121 ebx=0x01c0003f ecx=0x0000003f edx=0x00000000
-- Level: 1 (instruction cache)
Not inclusive of lower cache levels
Cache addressing: direct mapped cache
Line size: 64
Number of ways: 8
Number of sets: 64
Raw results:
0x00000004 0x01: eax=0x1c004122 ebx=0x01c0003f ecx=0x0000003f edx=0x00000000
-- Level: 2 (unified cache)
Not inclusive of lower cache levels
Cache addressing: direct mapped cache
Line size: 64
Number of ways: 8
Number of sets: 512
Raw results:
0x00000004 0x02: eax=0x1c004143 ebx=0x01c0003f ecx=0x000001ff edx=0x00000000
-- Level: 3 (unified cache)
Inclusive of lower cache levels
Cache addressing: complex addressing
Line size: 64
Number of ways: 12
Number of sets: 4096
Raw results:
0x00000004 0x03: eax=0x1c03c163 ebx=0x02c0003f ecx=0x00000fff edx=0x00000006