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

[Pavel Grunt]

On Tue, 2017-02-21 at 15:10 +0800, John Y. wrote:
> spice-server is 0.12.4-20
> 
> I did not add the spice agent.
> Can spice agent provide better VGA performance? 

It will give you the arbitrary resolution feature (guest will change
its resolution to match the remote-viewer's window size)

> I though it just provide data transferring. 
> 
Also copy & paste between the client and the guest, it allows to
enable the multimonitor support

> I had install spice guest tools.

This may have an effect on performance since it installs some drivers

Pavel

> 
> Regards,
> John
> 
> 
> 2017-02-21 14:29 GMT+08:00 Pavel Grunt <pgrunt at redhat.com>:
> > 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.
> > >
> > > _______________________________________________
> > > Spice-devel mailing list
> > > Spice-devel at lists.freedesktop.org
> > > https://lists.freedesktop.org/mailman/listinfo/spice-devel
> > 
> 
>