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chcpu命令【chcpu命令】chcpu是linux系统下的命令，可以修改cpu的状态 。它可以启用或禁用CPU,扫描新的CPU,改变底层虚拟机监控程式的CPU调度模式,并请求CPU的系统管理程式(配置)或返回CPU hypervisor
基本介绍中文名：chcpu命令
系统：linux系统
作用：修改cpu的状态
用法：chcpu - configure CPUs
Namechcpu - configure CPUsSynopsischcpu [-e] [-d] [-c] [-g] cpu-listchcpu [-p] modechcpu -rchcpu [-h] [-V]Descriptionchcpu can modify the state of CPUs. It can enable or disable CPUs, scan for new CPUs, change the CPU dispatching mode of the underlying hypervisor, and request CPUs from the hypervisor (configure) or return CPUs to the hypervisor (deconfigure).Some options have a cpu-list argument. Use this argument to specify a comma-separated list of CPUs. The list can contain individual CPU addresses or ranges of addresses. For example, 0,5,7,9-11 makes the command applicable to the CPUs with the addresses 0, 5, 7, 9, 10, and 11.Options-r, --rescanTrigger a rescan of CPUs. Use this option on systems that do not automatically detect newly attached CPUs. The Linux kernel then recognizes the new CPUs. -c, --configure cpu-listConfigure all specified CPUs. Configuring a CPU means that the hypervisor takes a CPU from the CPU pool and assigns it to the virtual hardware on which your kernel runs. -e, --enable cpu-listEnable all specified CPUs. Enabling a CPU means that the kernel sets it online. A CPU must be configured, see -c, before it can be enabled. -p, --dispatch modeSet the CPU dispatching mode (polarization). This option has an effect only if your hardware architecture and hypervisor support CPU polarization. Available modes are:horizontalThe workload is spread across all available CPUs.verticalThe workload is concentrated on few CPUs.-d, --disable cpu-listDisable all specified CPUs. Disabling a CPU means that the kernel sets it offline. -g, --deconfigure cpu-listDeconfigure all specified CPUs. Deconfiguring a CPU means that the hypervisor removes the CPU from the virtual hardware on which the Linux instance runs and returns it to the CPU pool. A CPU must be offline, see -d, before it can be deconfigured. -h, --helpDisplay help information and exit. -V, --versionDisplay version information and exit.AuthorHeiko CarstensCopyrightCopyright IBM Corp. 2011See Alsolscpu(1)AvailabilityThe chcpu command is part of the util-linux package and is available from Linux Kernel Archive