本文共 3599 字，大约阅读时间需要 11 分钟。
目录
查看CPU信息
# lscpuArchitecture: x86_64CPU op-mode(s): 32-bit, 64-bitByte Order: Little EndianCPU(s): 1On-line CPU(s) list: 0Thread(s) per core: 1Core(s) per socket: 1Socket(s): 1NUMA node(s): 1Vendor ID: GenuineIntelCPU family: 6Model: 13Stepping: 3CPU MHz: 2400.084BogoMIPS: 4800.16Hypervisor vendor: KVMVirtualization type: fullL1d cache: 32KL1i cache: 32KL2 cache: 4096KNUMA node0 CPU(s): 0
禁用谋个CPU(含超线程)
# chcpu -d 3CPU 3 disabled# lscpu -c --extendedCPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE3 - - - ::: no# lscpu -b --extendedCPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE0 0 0 0 0:0:0:0 yes1 0 0 1 1:1:1:0 yes2 0 0 2 2:2:2:0 yes4 0 1 3 3:3:3:1 yes5 0 1 4 4:4:4:1 yes6 0 1 5 5:5:5:1 yes7 0 1 6 6:6:6:1 yes# lscpu --all --extendedCPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE0 0 0 0 0:0:0:0 yes1 0 0 1 1:1:1:0 yes2 0 0 2 2:2:2:0 yes3 - - - ::: no4 0 1 3 3:3:3:1 yes5 0 1 4 4:4:4:1 yes6 0 1 5 5:5:5:1 yes7 0 1 6 6:6:6:1 yes# chcpu -d 3CPU 3 is already disabled# chcpu -d 1CPU 1 disabled# chcpu -d 3CPU 3 disabled# chcpu -d 5CPU 5 disabled# chcpu -d 7CPU 7 disabled# lscpu --all --extendedCPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE0 0 0 0 0:0:0:0 yes1 - - - ::: no2 0 0 1 1:1:1:0 yes3 - - - ::: no4 0 1 2 2:2:2:1 yes5 - - - ::: no6 0 1 3 3:3:3:1 yes7 - - - ::: no
启用谋个CPU
# chcpu -e 3CPU 3 enabled# lscpu --all --extendedCPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE0 0 0 0 0:0:0:0 yes1 0 0 1 1:1:1:0 yes2 0 0 2 2:2:2:0 yes3 0 0 3 3:3:3:0 yes4 0 1 4 4:4:4:1 yes5 0 1 5 5:5:5:1 yes6 0 1 6 6:6:6:1 yes7 0 1 7 7:7:7:1 yes
0 号 CPU不允许禁用
# lscpu --all --extendedCPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE0 0 0 0 0:0:0:0 yes1 - - - ::: no2 - - - ::: no3 - - - ::: no4 - - - ::: no5 - - - ::: no6 - - - ::: no7 - - - ::: no# chcpu -d 0CPU 0 is not hot pluggable
1号处于启用状态，0号仍然不能禁用
# lscpu --all --extendedCPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE0 0 0 0 0:0:0:0 yes1 0 0 1 1:1:1:0 yes2 - - - ::: no3 - - - ::: no4 - - - ::: no5 - - - ::: no6 - - - ::: no7 - - - ::: no# chcpu -d 0CPU 0 is not hot pluggable
Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript">comments powered by Disqus.</a>comments powered by Disqus 原文出处：Netkiller 系列 手札 本文作者：陈景峯 转载请与作者联系，同时请务必标明文章原始出处和作者信息及本声明。