Hi,
Ever since our first Windows Server 2012 deployment on oVirt (3.4 back
then, now 3.5.1), I have noticed that working on these VMs via RDP or on
the console via VNC is noticeably slower than on Windows 2008 guests on
the same oVirt environment.
[snip]
Does anyone share this experience?
Any idea why this could happen and how it can be fixed?
Any other information I should share to get a better idea?
Hi Martijn,
Can you please provide the QEMU command line, together with kvm and qemu
version?
This information will be helpful for reproducing the problem.
However, if the problem is not reproducible on a local setup, we will
probably need to ask collecting some performance information with
xperf tool.
Sure!
Command line is this:
/usr/libexec/qemu-kvm -name Getafix -S -M rhel6.5.0 -cpu
Penryn,hv_relaxed -enable-kvm -m 2048 -realtime mlock=off -smp
2,maxcpus=16,sockets=16,cores=1,threads=1 -uuid
34951c25-9a37-4712-a16a-fdfc98f4febc -smbios
type=1,manufacturer=oVirt,product=oVirt
Node,version=6-6.el6.centos.12.2,serial=44454C4C-3400-1058-804C-B1C04F42344A,uuid=34951c25-9a37-4712-a16a-fdfc98f4febc
-nodefconfig -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/Getafix.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc
base=2015-01-12T11:14:02,clock=vm,driftfix=slew -no-kvm-pit-reinjection
-no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2
-device
virtio-serial-pci,id=virtio-serial0,max_ports=16,bus=pci.0,addr=0x4
-drive
if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw,serial=
-device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0
-drive
file=/rhev/data-center/aefd5844-6e01-4070-b3b9-c0d73cc40c78/52678e67-a202-4306-b7ed-5fed8df10edf/images/28cc9a6c-6f2e-4b09-b361-f2a09f27dbc5/4c7b571e-4b29-47b9-ab4b-5799d64f28f9,if=none,id=drive-virtio-disk0,format=raw,serial=28cc9a6c-6f2e-4b09-b361-f2a09f27dbc5,cache=none,werror=stop,rerror=stop,aio=threads
-device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
-netdev tap,fd=41,id=hostnet0,vhost=on,vhostfd=43 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=00:1a:4a:74:59:a2,bus=pci.0,addr=0x3
-chardev
socket,id=charchannel0,path=/var/lib/libvirt/qemu/channels/34951c25-9a37-4712-a16a-fdfc98f4febc.com.redhat.rhevm.vdsm,server,nowait
-device
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.rhevm.vdsm
-chardev
socket,id=charchannel1,path=/var/lib/libvirt/qemu/channels/34951c25-9a37-4712-a16a-fdfc98f4febc.org.qemu.guest_agent.0,server,nowait
-device
virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,name=org.qemu.guest_agent.0
-device usb-tablet,id=input0 -vnc 172.17.6.14:7,password -k en-us -vga
cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 -msg
timestamp=on
Qemu version:
qemu-kvm-rhev-0.12.1.2-2.415.el6_5.14.x86_64
Please let me know if I can do more to help!
Best regards,
Martijn.
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