!! sysctl
! cpu の温度
 sysctl dev.cpu.0.temperature
 dev.cpu.0.temperature: 93.0C
! memory 
 sysctl hw.physmem hw.usermem
! CPU の種類
 sysctl hw.model 

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https://gist.github.com/clemensg/8828061


https://calomel.org/freebsd_network_tuning.html

https://qiita.com/Aqua-218/items/9ff02329b1d29549463f