FreeBSD既没有GNU/Linux操作系统上的/proc/cpuinfo文件，也不提供lscpu命令（其实lscpu也是访问的/proc/cpuinfo文件）。因此在FreeBSD上想了解当前机器的CPU信息，需要费点小周折：
（1）使用sysctl命令：
# sysctl hw.model hw.machine hw.ncpu
hw.model: Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
hw.machine: amd64
hw.ncpu: 2
（2）读取/var/run/dmesg.boot文件：
# grep -i cpu /var/run/dmesg.boot
CPU: Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz (2400.05-MHz K8-class CPU)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
est0: <Enhanced SpeedStep Frequency Control> on cpu0
est1: <Enhanced SpeedStep Frequency Control> on cpu1
SMP: AP CPU #1 Launched!
（3）通过dmidecode命令获得CPU和cache信息：
# dmidecode -t processor -t cache
# dmidecode 3.0
Scanning /dev/mem for entry point.
SMBIOS 2.4 present.
Handle 0x0004, DMI type 4, 35 bytes
Processor Information
Socket Designation: LGA 775
Type: Central Processor
Family: Pentium 4
Manufacturer: Intel
ID: F6 06 00 00 FF FB EB BF
Signature: Type 0, Family 6, Model 15, Stepping 6
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
......
Handle 0x0005, DMI type 7, 19 bytes
Cache Information
Socket Designation: L1-Cache
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 32 kB
Maximum Size: 32 kB
......
参考资料：
FreeBSD CPU Information Command；
What is the equivalent of /proc/cpuinfo on FreeBSD v8.1?。