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Mit Hilfe von x86info werden Informationen zum Cache, den unterstützten CPU-Funktionen, sowie den Registern und allgemeine Informationen zu den vorhandenen Prozessoren ausgelesen. Im FreeBSD-Portbaum findet man x86info unter sysutils/x86info:

# cd /usr/ports/sysutils/x86info && make install clean

Ruft man x86info mit der -a Option auf, werden alle verfürbaren Informationen zu den vorhandenen Prozessoren angezeigt:

# x86info -a
x86info v1.25.  Dave Jones 2001-2009
Feedback to <davej@redhat.com>.

Found 2 CPUs
MP Table:
#       APIC ID Version State           Family  Model   Step    Flags
#        0       0x14    BSP, usable     6       7       6       0xbfebfbff
#        1       0x14    AP, usable      6       7       6       0xbfebfbff

--------------------------------------------------------------------------
CPU #1
EFamily: 0 EModel: 1 Family: 6 Model: 23 Stepping: 6
CPU Model: Core 2 Duo P8600
Processor name string: Intel(R) Core(TM)2 Duo CPU     T9300  @ 2.50GHz
Type: 0 (Original OEM)  Brand: 0 (Unsupported)
Number of cores per physical package=1
Number of logical processors per socket=2
Number of logical processors per core=2
APIC ID: 0x1    Package: 0  Core: 0   SMT ID 1
eax in: 0x00000000, eax = 0000000a ebx = 756e6547 ecx = 6c65746e edx = 49656e69
eax in: 0x00000001, eax = 00010676 ebx = 01020800 ecx = 0008e3bd edx = bfebfbff
eax in: 0x00000002, eax = 05b0b101 ebx = 005657f0 ecx = 00000000 edx = 2cb4304e
eax in: 0x00000003, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x00000004, eax = 04000121 ebx = 01c0003f ecx = 0000003f edx = 00000001
eax in: 0x00000005, eax = 00000040 ebx = 00000040 ecx = 00000003 edx = 03122220
eax in: 0x00000006, eax = 00000003 ebx = 00000002 ecx = 00000001 edx = 00000000
eax in: 0x00000007, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x00000008, eax = 00000400 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x00000009, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x0000000a, eax = 07280202 ebx = 00000000 ecx = 00000000 edx = 00000503

eax in: 0x80000000, eax = 80000008 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x80000001, eax = 00000000 ebx = 00000000 ecx = 00000001 edx = 20100000
eax in: 0x80000002, eax = 65746e49 ebx = 2952286c ecx = 726f4320 edx = 4d542865
eax in: 0x80000003, eax = 44203229 ebx = 43206f75 ecx = 20205550 edx = 54202020
eax in: 0x80000004, eax = 30303339 ebx = 20402020 ecx = 30352e32 edx = 007a4847
eax in: 0x80000005, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x80000006, eax = 00000000 ebx = 00000000 ecx = 18008040 edx = 00000000
eax in: 0x80000007, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x80000008, eax = 00003024 ebx = 00000000 ecx = 00000000 edx = 00000000

Cache info
 L1 Instruction cache: 32KB, 8-way associative. 64 byte line size.
 L1 Data cache: 32KB, 8-way associative. 64 byte line size.
 L2 cache: 6MB, 24-way set associative, 64-byte line size.
TLB info
 Instruction TLB: 4x 4MB page entries, or 8x 2MB pages entries, 4-way associative
 Instruction TLB: 4K pages, 4-way associative, 128 entries.
 Data TLB: 4MB pages, 4-way associative, 32 entries
 L1 Data TLB: 4KB pages, 4-way set associative, 16 entries
 L1 Data TLB: 4MB pages, 4-way set associative, 16 entries
 Data TLB: 4K pages, 4-way associative, 256 entries.
 64 byte prefetching.
Feature flags:
 fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflsh ds acpi mmx fxsr sse sse2 ss ht tm pbe
Extended feature flags:
 sse3 [2] monitor ds-cpl vmx est tm2 ssse3 cx16 xTPR [15] [19]

2.50GHz processor (estimate).

--------------------------------------------------------------------------
CPU #2
EFamily: 0 EModel: 1 Family: 6 Model: 23 Stepping: 6
CPU Model: Core 2 Duo P8600
Processor name string: Intel(R) Core(TM)2 Duo CPU     T9300  @ 2.50GHz
Type: 0 (Original OEM)  Brand: 0 (Unsupported)
Number of cores per physical package=1
Number of logical processors per socket=2
Number of logical processors per core=2
APIC ID: 0x1    Package: 0  Core: 0   SMT ID 1
eax in: 0x00000000, eax = 0000000a ebx = 756e6547 ecx = 6c65746e edx = 49656e69
eax in: 0x00000001, eax = 00010676 ebx = 01020800 ecx = 0008e3bd edx = bfebfbff
eax in: 0x00000002, eax = 05b0b101 ebx = 005657f0 ecx = 00000000 edx = 2cb4304e
eax in: 0x00000003, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x00000004, eax = 04000121 ebx = 01c0003f ecx = 0000003f edx = 00000001
eax in: 0x00000005, eax = 00000040 ebx = 00000040 ecx = 00000003 edx = 03122220
eax in: 0x00000006, eax = 00000003 ebx = 00000002 ecx = 00000001 edx = 00000000
eax in: 0x00000007, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x00000008, eax = 00000400 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x00000009, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x0000000a, eax = 07280202 ebx = 00000000 ecx = 00000000 edx = 00000503

eax in: 0x80000000, eax = 80000008 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x80000001, eax = 00000000 ebx = 00000000 ecx = 00000001 edx = 20100000
eax in: 0x80000002, eax = 65746e49 ebx = 2952286c ecx = 726f4320 edx = 4d542865
eax in: 0x80000003, eax = 44203229 ebx = 43206f75 ecx = 20205550 edx = 54202020
eax in: 0x80000004, eax = 30303339 ebx = 20402020 ecx = 30352e32 edx = 007a4847
eax in: 0x80000005, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x80000006, eax = 00000000 ebx = 00000000 ecx = 18008040 edx = 00000000
eax in: 0x80000007, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x80000008, eax = 00003024 ebx = 00000000 ecx = 00000000 edx = 00000000

Cache info
 L1 Instruction cache: 32KB, 8-way associative. 64 byte line size.
 L1 Data cache: 32KB, 8-way associative. 64 byte line size.
 L2 cache: 6MB, 24-way set associative, 64-byte line size.
TLB info
 Instruction TLB: 4x 4MB page entries, or 8x 2MB pages entries, 4-way associative
 Instruction TLB: 4K pages, 4-way associative, 128 entries.
 Data TLB: 4MB pages, 4-way associative, 32 entries
 L1 Data TLB: 4KB pages, 4-way set associative, 16 entries
 L1 Data TLB: 4MB pages, 4-way set associative, 16 entries
 Data TLB: 4K pages, 4-way associative, 256 entries.
 64 byte prefetching.
Feature flags:
 fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflsh ds acpi mmx fxsr sse sse2 ss ht tm pbe
Extended feature flags:
 sse3 [2] monitor ds-cpl vmx est tm2 ssse3 cx16 xTPR [15] [19]

2.50GHz processor (estimate).

Mehr Informationen zu x86info findet man in der Manpage x86info(1).