On Mon, 2015-05-04 at 08:28 -0400, Michal Skrivanek wrote: > > On 4 May 2015, at 09:35, Martijn Grendelman <[email protected]> > wrote: > > > 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-b7e d-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-table t,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! > > How about trying virtio-scsi? Same difference? > > We'll be supporting virtio blk dataplane in 3.6, that may affect the > performance significantly. > Also a EL7 hypervisor could change results a lot. Do you have any at hand to > give it a try? > Well, also hyperv enlightnment? Not sure, but worth a try. It's currently > disabled in osinfo entry for Win8/2012, can you try that?(on a non-production > VM;)
It worth trying, especially hv_time flag. Vadim. > Thanks, > michal > > > > > Best regards, > > Martijn. > > _______________________________________________ > > Users mailing list > > [email protected] > > http://lists.ovirt.org/mailman/listinfo/users _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
