PVE环境虚拟机CPU模式分别位KVM和HOST性能对比

命令

openssl speed -elapsed -evp aes-128-gcm

结果

kvm

You have chosen to measure elapsed time instead of user CPU time.

Doing aes-128-gcm for 3s on 16 size blocks: 14437624 aes-128-gcm's in 3.00s

Doing aes-128-gcm for 3s on 64 size blocks: 4532836 aes-128-gcm's in 3.01s

Doing aes-128-gcm for 3s on 256 size blocks: 1112765 aes-128-gcm's in 3.00s

Doing aes-128-gcm for 3s on 1024 size blocks: 309334 aes-128-gcm's in 3.00s

Doing aes-128-gcm for 3s on 8192 size blocks: 39058 aes-128-gcm's in 3.00s

Doing aes-128-gcm for 3s on 16384 size blocks: 19514 aes-128-gcm's in 3.00s

OpenSSL 1.1.1d 10 Sep 2019

built on: Mon Apr 20 20:23:01 2020 UTC

options:bn(64,64) rc4(8x,char) des(int) aes(partial) blowfish(ptr)

compiler: gcc -fPIC -pthread -m64 -Wa,--noexecstack -Wall -Wa,--noexecstack -g -O2 -fdebug-prefix-map=/build/openssl-8Ocme2/openssl-1.1.1d=. -fstack-protector-strong -Wformat -Werror=format-security -DOPENSSL_USE_NODELETE -DL_ENDIAN -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DKECCAK1600_ASM -DRC4_ASM -DMD5_ASM -DAESNI_ASM -DVPAES_ASM -DGHASH_ASM -DECP_NISTZ256_ASM -DX25519_ASM -DPOLY1305_ASM -DNDEBUG -Wdate-time -D_FORTIFY_SOURCE=2

The 'numbers' are in 1000s of bytes per second processed.

type 16 bytes 64 bytes256 bytes 1024 bytes 8192 bytes 16384 bytes

aes-128-gcm 77000.66k96379.24k94955.95k 105586.01k 106654.38k 106572.46k

host

You have chosen to measure elapsed time instead of user CPU time.

Doing aes-128-gcm for 3s on 16 size blocks: 24164323 aes-128-gcm's in 3.00s

Doing aes-128-gcm for 3s on 64 size blocks: 7980988 aes-128-gcm's in 3.00s

Doing aes-128-gcm for 3s on 256 size blocks: 2270894 aes-128-gcm's in 3.00s

Doing aes-128-gcm for 3s on 1024 size blocks: 543897 aes-128-gcm's in 3.00s

Doing aes-128-gcm for 3s on 8192 size blocks: 72932 aes-128-gcm's in 3.00s

Doing aes-128-gcm for 3s on 16384 size blocks: 37819 aes-128-gcm's in 3.00s

OpenSSL 1.1.1d 10 Sep 2019

built on: Mon Apr 20 20:23:01 2020 UTC

options:bn(64,64) rc4(16x,int) des(int) aes(partial) blowfish(ptr)

compiler: gcc -fPIC -pthread -m64 -Wa,--noexecstack -Wall -Wa,--noexecstack -g -O2 -fdebug-prefix-map=/build/openssl-8Ocme2/openssl-1.1.1d=. -fstack-protector-strong -Wformat -Werror=format-security -DOPENSSL_USE_NODELETE -DL_ENDIAN -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DKECCAK1600_ASM -DRC4_ASM -DMD5_ASM -DAESNI_ASM -DVPAES_ASM -DGHASH_ASM -DECP_NISTZ256_ASM -DX25519_ASM -DPOLY1305_ASM -DNDEBUG -Wdate-time -D_FORTIFY_SOURCE=2

The 'numbers' are in 1000s of bytes per second processed.

type 16 bytes 64 bytes256 bytes 1024 bytes 8192 bytes 16384 bytes

aes-128-gcm 128876.39k 170261.08k 193782.95k 185650.18k 199152.98k 206542.17k

结论

host比kvm高近一倍

RedHat/CentOS6.2 x86系统KVM虚拟机网络配置 http://www.linuxidc.com/Linux/2012-05/61445.htm

作业环境

服务器端

操作系统：CentOS 6.3 final x86_64

IP: 133.133.10.50

Hostname：myKVM

KVM：qemu-kvm-0.12.1.2-2.295.el6_3.2.x86_64

客户端：Ubuntu和Win7，先在服务器端装好VNC，通过VNC连接服务器CentOS

一、安装KVM及相关软件

1、KVM 需要有 CPU 的支持（Intel vmx 或 AMD svm），在安装 KVM 之前检查一下 CPU 是否提供了虚拟技术的支持：

[root@myKVM ~]# egrep '^flags.*(vmx|svm)' /proc/cpuinfo

有显示, 有显示则说明处理器具有VT功能

2、在主板BIOS中开启CPU的Virtual Technolege(VT，虚化技术)

3、安装kvm及其需要的软件包

[root@myKVM ~]# yum install kvm kmod-kvm qemu kvm-qemu-img virt-viewer virt-manager libvirt libvirt-python python-virtinst

或

[root@myKVM ~]# yum groupinstall KVM

4、检查kvm模块是否安装，使用以下命令显示两个模块则表示安装完成

[root@myKVM ~]# lsmod | grep kvm

kvm_intel 52570 0

kvm 314739 1 kvm_intel

二、启动virt-manager管理界面

1、客户端

VNC到服务器端，因为需要用服务器的图形界面

2、服务器端

启动libvirtd服务，并保证下次自动启动

[root@myKVM ~]# service libvirtd start

Starting libvirtd daemon: [ 确定 ]

[root@myKVM ~]# chkconfig libvirtd on

三、远程创建和管理KVM虚拟机

1. 打开Application=>System Tools =>Virtual Machine Manager就可以装虚拟机了，功能跟VMware类似

2. “Details”中可查看或修改Guest OS的配置信息

3、安装完成后需要将默认的IDE硬盘和网卡换成virtio,并打上驱动程序，这样性能就可以得到提升。（默认好像就是这样的）

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