[ovirt-users] Info about windows guest performance

Sun Feb 11 08:33:58 UTC 2018

On Sat, Feb 10, 2018 at 8:41 PM, Gianluca Cecchi <gianluca.cecchi at gmail.com>
wrote:

> On Fri, Feb 9, 2018 at 4:32 PM, Gianluca Cecchi <gianluca.cecchi at gmail.com
> > wrote:
>
>>
>>
>> If I edit the VM, in general settings I see "Other OS" as operating
>> system.
>> In General subtab after selecting the VM  in "Virtual Machines" tab I
>> again see "Other OS" in "Operating System" and the field "Origin" filled
>> with the value "VMware"
>>
>> During virt-v2v it seems it was recognized as Windows 2008 though...
>>
>> libguestfs: trace: v2v: hivex_value_utf8 = "Windows Server 2008 R2
>> Enterprise"
>> libguestfs: trace: v2v: hivex_value_key 11809408
>>
>> I can send all the log if it can help.
>> Thanks,
>> Gianluca
>>
>
>
> So it seems it has been a problem with virt-v2v conversion, because if I
> shutdown the VM and set it to Windows 2008 R2 x86_64 and optimized for
> server and I run it, I get this flag for the cpu:
>

A new virt-v2v was just released, worth testing it. It has some nice
features, and perhaps fixes the above too.
For example:
       Virt-v2v now installs Windows 10 / Windows Server 2016 virtio block
       drivers correctly (Pavel Butsykin, Kun Wei).

       Virt-v2v now installs virtio-rng, balloon and pvpanic drivers, and
       correctly sets this in the target hypervisor metadata for hypervisors
       which support that (Tomáš Golembiovský).

       Virt-v2v now installs both legacy and modern virtio keys in the
Windows
       registry (Ladi Prosek).

>
> -cpu Westmere,vmx=on,hv_time,hv_relaxed,hv_vapic,hv_spinlocks=0x1fff
>
> BTW: what are the other flags for:
>
>
> hv_spinlocks=0x1fff
> hv_relaxed
> hv_vapic
> ?
>

These are the enlightenment that allow Windows guests to run faster (hv =
hyper-v).
See[1]
Y.

[1]
http://blog.wikichoon.com/2014/07/enabling-hyper-v-enlightenments-with-kvm.html

> Complete command is:
>
> /usr/libexec/qemu-kvm
> -name guest=testmig,debug-threads=on
> -S
> -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/
> qemu/domain-15-testmig/master-key.aes
> -machine pc-i440fx-rhel7.3.0,accel=kvm,usb=off,dump-guest-core=off
> -cpu Westmere,vmx=on,hv_time,hv_relaxed,hv_vapic,hv_spinlocks=0x1fff
> -m size=4194304k,slots=16,maxmem=16777216k
> -realtime mlock=off
> -smp 2,maxcpus=16,sockets=16,cores=1,threads=1
> -numa node,nodeid=0,cpus=0-1,mem=4096
> -uuid XXX
> -smbios type=1,manufacturer=oVirt,product=oVirt Node,version=7-4.1708.el7.
> centos,serial=XXX,uuid=YYY
> -no-user-config
> -nodefaults
> -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-
> 15-testmig/monitor.sock,server,nowait
> -mon chardev=charmonitor,id=monitor,mode=control
> -rtc base=2018-02-10T18:32:22,driftfix=slew
> -global kvm-pit.lost_tick_policy=delay
> -no-hpet
> -no-shutdown
> -boot strict=on
> -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2
> -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x5
> -device virtio-serial-pci,id=virtio-serial0,max_ports=16,bus=pci.
> 0,addr=0x4
> -drive if=none,id=drive-ide0-1-0,readonly=on
> -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0
> -drive file=/rhev/data-center/ef17cad6-7724-4cd8-96e3-
> 9af6e529db51/fa33df49-b09d-4f86-9719-ede649542c21/images/
> 2de93ee3-7d6e-4a10-88c4-abc7a11fb687/a9f4e35b-4aa0-
> 45e8-b775-1a046d1851aa,format=qcow2,if=none,id=drive-scsi0-
> 0-0-1,serial=2de93ee3-7d6e-4a10-88c4-abc7a11fb687,cache=
> none,werror=stop,rerror=stop,aio=native
> -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=1,drive=drive-
> scsi0-0-0-1,id=scsi0-0-0-1,bootindex=1
> -drive file=/rhev/data-center/ef17cad6-7724-4cd8-96e3-
> 9af6e529db51/fa33df49-b09d-4f86-9719-ede649542c21/images/
> f821da0a-cec7-457c-88a4-f83f33404e65/0d0c4244-f184-
> 4eaa-b5bf-8dc65c7069bb,format=raw,if=none,id=drive-scsi0-0-
> 0-0,serial=f821da0a-cec7-457c-88a4-f83f33404e65,cache=none,
> werror=stop,rerror=stop,aio=native
> -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-
> scsi0-0-0-0,id=scsi0-0-0-0
> -netdev tap,fd=30,id=hostnet0
> -device e1000,netdev=hostnet0,id=net0,mac=00:50:56:9d:c9:29,bus=pci.
> 0,addr=0x3
> -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/channels/
> 421d6f1b-58e3-54a4-802f-fb52f7831369.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/
> 421d6f1b-58e3-54a4-802f-fb52f7831369.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
> -chardev spicevmc,id=charchannel2,name=vdagent
> -device virtserialport,bus=virtio-serial0.0,nr=3,chardev=
> charchannel2,id=channel2,name=com.redhat.spice.0
> -spice tls-port=5900,addr=10.4.192.32,x509-dir=/etc/pki/vdsm/
> libvirt-spice,tls-channel=default,tls-channel=main,tls-
> channel=display,tls-channel=inputs,tls-channel=cursor,tls-
> channel=playback,tls-channel=record,tls-channel=smartcard,
> tls-channel=usbredir,seamless-migration=on
> -device qxl-vga,id=video0,ram_size=67108864,vram_size=8388608,
> vram64_size_mb=0,vgamem_mb=16,max_outputs=1,bus=pci.0,addr=0x2
> -msg timestamp=on
>
> Thanks,
> Gianluca
>
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