[Spice-devel] Remote control delay when I access to windows7 kvm virtual machine with spice

[Pavel Grunt]

Hello John,

On Tue, 2017-02-21 at 10:28 +0800, John Y. wrote:
> I had a kvm virtual machine with windows 7 which is created by
> qemu2.5 and spice-server-1.8.0.
do you mean spice-server 0.12.8 ?

> I used spice to remote access the vm, but I felled lag sometime.
> I opened the notepad and typed some words, but words displayed after
> 0.5-1 seconds. I can fell the delay obviously.
> 
> The vm is on a centos server and ip is 192.168.11.10.
> My client is on ubuntu and the statistics of ping:
> 
> --— 192.168.11.10 ping statistics ---
> 213 packets transmitted, 213 received, 0% packet loss, time 212345ms
> rtt min/avg/max/mdev = 0.294/6.786/17.672/5.125 ms 
> 
> 
> How can I get more information to solve this problem ?
> 
Let us know if adding the spice agent
https://www.spice-space.org/spice-user-manual.html#agent

and installing spice guest tools 
https://www.spice-space.org/download.html#windows-binaries

changes anything.

Thanks,
Pavel

> 
> Here are the information:
> 
> qemu version:
> QEMU emulator version 2.5.1.1, Copyright (c) 2003-2008 Fabrice
> Bellard
> 
> uname -a
> Linux server01 4.2.0-1.el7.elrepo.x86_64 #1 SMP Sun Aug 30 21:25:29
> EDT 2015 x86_64 x86_64 x86_64 GNU/Linux
> 
> libvirt.xml:
> <domain xmlns:qemu="http://libvirt.org/schemas/domain/qemu/1.0"
> type="kvm">  
>   <name>win7_001</name>     
>   <os> 
>     <type arch="x86_64" machine="pc-i440fx-1.7">hvm</type> 
>   </os>  
>   <features> 
>     <acpi/>  
>     <apic/>  
>     <pae/> 
>   </features> 
>   <clock offset="localtime"/>  
>   <on_poweroff>destroy</on_poweroff>  
>   <on_reboot>restart</on_reboot>  
>   <on_crash>destroy</on_crash>  
>   <vcpu current="2">2</vcpu>  
>   <cpu> 
>     <topology sockets="1" cores="2" threads="1"/> 
>   </cpu>
>   <memory>4194304</memory>  
>   <currentMemory>4194304</currentMemory>  
>   <devices> 
>     <emulator>/root/qemu25/x86_64-softmmu/qemu-system-
> x86_64</emulator>  
>     <disk device="disk" type="file"> 
>       <driver name="qemu" type="qcow2" cache="none"/>  
>       <source file="/root/vm/wind7_01/win7.qcow2/>  
>       <target bus="virtio" dev="vda"/> 
>     </disk>  
>     <disk type="file" device="cdrom"> 
>       <source dev=""/>  
>       <target dev="hdc" bus="ide"/> 
>     </disk>  
>     <serial type="pty"> 
>       <source path="/dev/pts/1"/>  
>       <target port="0"/> 
>     </serial>  
>     <input type="tablet" bus="usb"/>  
>     <input type="mouse" bus="ps2"/>  
>     <controller type="usb" index="0" model="ich9-ehci1"> 
>       <alias name="usb0"/> 
>     </controller>  
>     <controller type="usb" index="0" model="ich9-uhci1"> 
>       <alias name="usb0"/>  
>       <master startport="0"/> 
>     </controller>  
>     <controller type="usb" index="0" model="ich9-uhci2"> 
>       <alias name="usb0"/>  
>       <master startport="2"/> 
>     </controller>  
>     <controller type="usb" index="0" model="ich9-uhci3"> 
>       <alias name="usb0"/>  
>       <master startport="4"/> 
>     </controller>  
>     <redirdev bus="usb" type="spicevmc"> 
>       <alias name="redir0"/> 
>     </redirdev>  
>     <redirdev bus="usb" type="spicevmc"> 
>       <alias name="redir1"/> 
>     </redirdev>  
>     <redirdev bus="usb" type="spicevmc"> 
>       <alias name="redir2"/> 
>     </redirdev>  
>     <redirdev bus="usb" type="spicevmc"> 
>       <alias name="redir3"/> 
>     </redirdev>  
>     <graphics type="spice" autoport="yes" listen='0.0.0.0'
> keymap='en-us'/>
>     <sound model="ac97"/>  
>     <video> 
>       <model type="qxl" ram="65536" vram="65536" heads="1"/> 
>     </video>  
>     <channel type="unix"> 
>       <source mode="bind"/>  
>       <target type="virtio" name="org.qemu.guest_agent.0"/> 
>     </channel>  
>     <interface type="bridge">
>       <mac address="fa:16:3e:6f:55:5b"/>
>       <source bridge="virtio"/>
>       <model type="virtio"/>
>     </interface>
>   </devices>  
>   <qemu:commandline> 
>     <qemu:arg value="-cpu"/>  
>     <qemu:arg value="host"/> 
>   </qemu:commandline> 
> </domain>
> 
> 
> Regards
> John.
> 
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