[libvirt-users] VM Performance using KVM Vs. VMware ESXi
Jatin Davey
jashokda at cisco.com
Tue Apr 14 11:23:52 UTC 2015
On 4/14/2015 4:42 PM, Dominique Ramaekers wrote:
>
> About Spice: I think it’s good practice to use spice because it
> improves the performance of the VM in general by improving screen
> performance. If your VM is constantly displaying output, you’ll
> probably will notice a difference.
>
[Jatin] Ok, This is not my concern as of now. I will take a look at it
sometime later.
>
> About virtio: You can see it in the settings. Better yet, it’s in your
> XML. If you post your XML, we can take a look…
>
Here is the xml associated with my VM:
********************************
<!--
WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
OVERWRITTEN AND LOST. Changes to this xml configuration should be made
using:
virsh edit ********
or other application using the libvirt API.
-->
<domain type='kvm'>
<name>******</name>
<uuid>********</uuid>
<title>*******</title>
<description>***********</description>
<metadata>
<template name="****">
<disks>
<location type="local" name="Local" path="/VM_DATA_01"/>
<disk>
<source
file="/opt/am-data/sw-download/apps//****/ovf/****/system.vmdk"
format="vmdk"/>
<target file="/VM_DATA_01/****/****.qcow2" format="qcow2"/>
</disk>
</disks>
<applications>
<application>
<name>****</name>
<description>****</description>
<version>****</version>
<icon>****</icon>
</application>
</applications>
</template>
</metadata>
<memory unit='KiB'>20971520</memory>
<currentMemory unit='KiB'>20971520</currentMemory>
<vcpu placement='static'>8</vcpu>
<os>
<type arch='x86_64' machine='rhel6.5.0'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/libexec/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source file='/var/lib/libvirt/images/****.qcow2'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<controller type='usb' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x2'/>
</controller>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x1'/>
</controller>
<interface type='bridge'>
<mac address='52:54:00:c9:58:c9'/>
<source bridge='br332'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03'
function='0x0'/>
</interface>
<serial type='pty'>
<target port='0'/>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'
keymap='en-us' passwd='*****'>
<listen type='address' address='0.0.0.0'/>
</graphics>
<sound model='ich6'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04'
function='0x0'/>
</sound>
<video>
<model type='cirrus' vram='9216' heads='1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02'
function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05'
function='0x0'/>
</memballoon>
</devices>
</domain>
*******************************************
Thanks
Jatin
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