统信 虚拟机，统信系统下KVM虚拟机CPU设置的详细解析与操作步骤

统信虚拟机下KVM虚拟机CPU设置解析及步骤详解：本文详细介绍了在统信系统下配置KVM虚拟机CPU的步骤，包括设置CPU类型、数量、虚拟化支持等，帮助用户优化虚拟机性能。

KVM（Kernel-based Virtual Machine）是一种基于Linux内核的虚拟化技术，可以实现硬件资源的虚拟化，提高资源利用率，在统信系统下，KVM虚拟机的设置与操作尤为重要，本文将详细解析统信系统下KVM虚拟机CPU设置的步骤，帮助用户更好地使用KVM虚拟机。

KVM虚拟机CPU设置的重要性

1、提高虚拟机性能：合理设置CPU参数，可以提高虚拟机的运行效率，降低资源消耗。

2、资源分配：通过CPU设置，可以实现不同虚拟机之间的资源分配，满足不同业务需求。

3、系统稳定性：合理设置CPU参数，有助于提高系统稳定性，降低故障率。

统信系统下KVM虚拟机CPU设置步骤

1、登录统信系统，打开终端。

2、输入以下命令，查看当前CPU信息：

lscpu

该命令会显示CPU的详细信息，如核心数、线程数、MHz等。

3、根据需要，修改虚拟机配置文件，虚拟机配置文件通常位于/etc/libvirt/qemu/目录下，以.xml为后缀，以下以myvm.xml为例，修改CPU设置。

4、使用文本编辑器打开虚拟机配置文件：

vi /etc/libvirt/qemu/myvm.xml

5、定位到以下部分，修改CPU参数：

<cpu mode='custom' check='none'>
  <model name='skylake' />
  <feature name='vmx' />
  <feature name='aes' />
  <feature name='popcnt' />
  <feature name='xsave' />
  <feature name='tsx' />
  <feature name='pdpe1gb' />
  <feature name='svm' />
  <feature name='lapic' />
  <feature name='syndbg' />
  <feature name='vpid' />
  <feature name='fpu' />
  <feature name='pse' />
  <feature name='tsc' />
  <feature name='vmx' />
  <feature name='vpid' />
  <feature name='pdpe1gb' />
  <feature name='smap' />
  <feature name='x2apic' />
  <feature name='movbe' />
  <feature name='nx' />
  <feature name='rdtscp' />
  <feature name='epb' />
  <feature name='popcnt' />
  <feature name='tpr_shadow' />
  <feature name='vmx_preemption_timer' />
  <feature name='apic' />
  <feature name='tsc_adjust' />
  <feature name='vnmi' />
  <feature name='flexpriority' />
  <feature name='ept' />
  <feature name='aes' />
  <feature name='xsaveopt' />
  <feature name='pdpe1gb' />
  <feature name='rdrand' />
  <feature name='hyperv' />
  <feature name='la57' />
  <feature name='l1dflush' />
  <feature name='l1dflush_cplup' />
  <feature name='xsavec' />
  <feature name='xsaveopt' />
  <feature name='avx' />
  <feature name='f16c' />
  <feature name='rdtscp' />
  <feature name='misalign' />
  <feature name='umip' />
  <feature name='pku' />
  <feature name='ospke' />
  <feature name='wbnoinvd' />
  <feature name='pku' />
  <feature name='ospke' />
  <feature name='wbnoinvd' />
  <feature name='fsgsbase' />
  <feature name='bmi1' />
  <feature name='smep' />
  <feature name='bmi2' />
  <feature name='erms' />
  <feature name='invpcid' />
  <feature name='rtm' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />
  <feature name='fma4' />
  <feature name='f16c' />
  <feature name='rdrand' />
  <feature name='xsave' />
  <feature name='xsaveopt' />
  <feature name='osxsave' />
  <feature name='avx512f' />
  <feature name='avx512dq' />
  <feature name='avx512ifma' />
  <feature name='avx512pf' />
  <feature name='avx512vpopcntdq' />
  <feature name='avx512vbmi' />