[vfio-users] Performance problem with i5 3330
Sinisa Tkalec
xslisx at gmail.com
Tue Sep 15 09:18:21 UTC 2015
You wanna set cpu like this:
<vcpu placement='static'>3</vcpu>
<cputune>
<vcpupin vcpu='0' cpuset='0'/>
<vcpupin vcpu='1' cpuset='1'/>
<vcpupin vcpu='2' cpuset='2'/>
</cputune>
<os>
<cpu mode='host-passthrough'>
<topology sockets='1' cores='3' threads='1'/>
</cpu>
On 09/15/2015 11:16 AM, francesco dicarlo wrote:
> Done with the scan. Nothing found...
>
> Besides running only malwarebytes anti-malware on win vm hogged guest
> cpu to 70% and all 3 cores assigned to vm on the host went at 65%.
>
> Only scanning... For the sake of completeness, I will post my vm xml.
>
>
> <domain type='kvm' id='12'
> xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
> <name>win8.1</name>
> <uuid>f7060f72-6428-40fe-b19e-6ced0837149e</uuid>
> <memory unit='KiB'>8388608</memory>
> <currentMemory unit='KiB'>8388608</currentMemory>
> <vcpu placement='static' cpuset='0-2'>3</vcpu>
> <resource>
> <partition>/machine</partition>
> </resource>
> <os>
> <type arch='x86_64' machine='pc-i440fx-trusty'>hvm</type>
> <loader>/usr/share/ovmf/OVMF.fd</loader>
> <bootmenu enable='yes'/>
> </os>
> <features>
> <acpi/>
> <hyperv>
> <relaxed state='off'/>
> <vapic state='off'/>
> <spinlocks state='off'/>
> </hyperv>
> </features>
> <cpu mode='custom' match='exact'>
> <model fallback='allow'>SandyBridge</model>
> <vendor>Intel</vendor>
> <topology sockets='1' cores='3' threads='1'/>
> <feature policy='require' name='vme'/>
> <feature policy='require' name='dtes64'/>
> <feature policy='require' name='vmx'/>
> <feature policy='require' name='erms'/>
> <feature policy='require' name='xtpr'/>
> <feature policy='require' name='smep'/>
> <feature policy='require' name='pcid'/>
> <feature policy='require' name='est'/>
> <feature policy='require' name='monitor'/>
> <feature policy='require' name='tm'/>
> <feature policy='require' name='acpi'/>
> <feature policy='require' name='osxsave'/>
> <feature policy='require' name='ht'/>
> <feature policy='require' name='pdcm'/>
> <feature policy='require' name='fsgsbase'/>
> <feature policy='require' name='f16c'/>
> <feature policy='require' name='ds’/>
> <feature policy='require' name='tm2'/>
> <feature policy='require' name='ss'/>
> <feature policy='require' name='pbe'/>
> <feature policy='require' name='ds_cpl'/>
> <feature policy='require' name='rdrand'/>
> </cpu>
> <clock offset='localtime'>
> <timer name='hypervclock' present='no'/>
> <timer name='rtc' tickpolicy='catchup'/>
> <timer name='pit' tickpolicy='delay'/>
> <timer name='hpet' present='no'/>
> </clock>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>restart</on_crash>
> <pm>
> <suspend-to-mem enabled='no'/>
> <suspend-to-disk enabled='no'/>
> </pm>
> <devices>
> <emulator>/usr/bin/qemu-system-x86_64</emulator>
> <disk type='file' device='disk'>
> <driver name='qemu' type='raw' cache='none' io='native'/>
> <source file='/home/repo/vmdisk/win8vmgame.img'/>
> <backingStore/>
> <target dev='vda' bus='virtio'/>
> <boot order='1'/>
> <alias name='virtio-disk0'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x05'
> function='0x0'/>
> </disk>
> <controller type='usb' index='0' model='ich9-ehci1'>
> <alias name='usb0'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
> function='0x7'/>
> </controller>
> <controller type='usb' index='0' model='ich9-uhci1'>
> <alias name='usb0'/>
> <master startport='0'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
> function='0x0' multifunction='on'/>
> </controller>
> <controller type='usb' index='0' model='ich9-uhci2'>
> <alias name='usb0'/>
> <master startport='2'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
> function='0x1'/>
> </controller>
> <controller type='usb' index='0' model='ich9-uhci3'>
> <alias name='usb0'/>
> <master startport='4'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
> function='0x2'/>
> </controller>
> <controller type='pci' index='0' model='pci-root'>
> <alias name='pci.0'/>
> </controller>
> <controller type='ide' index='0'>
> <alias name='ide0'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
> function='0x1'/>
> </controller>
> <interface type='bridge'>
> <mac address='52:54:00:db:d1:3e'/>
> <source bridge='br0'/>
> <target dev='vnet0'/>
> <model type='virtio'/>
> <alias name='net0'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> function='0x0'/>
> </interface>
> <serial type='pty'>
> <source path='/dev/pts/5'/>
> <target port='0'/>
> <alias name='serial0'/>
> </serial>
> <console type='pty' tty='/dev/pts/5'>
> <source path='/dev/pts/5'/>
> <target type='serial' port='0'/>
> <alias name='serial0'/>
> </console>
> <hostdev mode='subsystem' type='pci' managed='yes'>
> <driver name='vfio'/>
> <source>
> <address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
> </source>
> <alias name='hostdev0'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x0'/>
> </hostdev>
> <hostdev mode='subsystem' type='pci' managed='yes'>
> <driver name='vfio'/>
> <source>
> <address domain='0x0000' bus='0x01' slot='0x00' function='0x1'/>
> </source>
> <alias name='hostdev1'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x07'
> function='0x0'/>
> </hostdev>
> <memballoon model='virtio'>
> <alias name='balloon0'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x02'
> function='0x0'/>
> </memballoon>
> </devices>
> <qemu:commandline>
> <qemu:arg value='-cpu'/>
> <qemu:arg value='host,kvm=off'/>
> <qemu:arg value='-vga'/>
> <qemu:arg value='none'/>
> </qemu:commandline>
> </domain>
>
> 2015-09-15 11:04 GMT+02:00 francesco dicarlo <evilsephiroth at gmail.com
> <mailto:evilsephiroth at gmail.com>>:
>
> hmm a pretty new installation with only installed nvidia drivers
> and steam ? it's an image from a reliable source. just checking
> with malwarebytes tool.
>
> I inspected the task manager but nothing came up
>
> 2015-09-15 10:58 GMT+02:00 BugMaze <bugmaze at networkbreak.net
> <mailto:bugmaze at networkbreak.net>>:
>
> Then check your Windows for malware. Most of them are bitcoin
> mining proccess that hog the CPU in the background.
>
>
>
> ---- francesco dicarlo كتب ----
>
> 60 degree under gaming. pretty normal for that shitty intel
> cooler... I use sensors from ubuntu repository.
>
>
>
> 2015-09-15 10:45 GMT+02:00 BugMaze <bugmaze at networkbreak.net
> <mailto:bugmaze at networkbreak.net>>:
>
> Just a wild guess: Maybe your CPU is throttling, do you
> monitor your CPU's temps? I used to have a similar
> experience to yours, reseating the cooler with new thermal
> compound was the magic solution.
>
>
>
> ---- francesco dicarlo كتب ----
>
>
> Hi to all, this is my current hardware:
>
> Cpu: I5 3330
> Ram: 12GB DDR3
> HD: 3 x 4TB(NAS) + 1x120GB (Ubuntu 14.04)
> GPU:Nvidia gtx 970 directCu mini
> DVB-S :Dvb-Sky S952 pci express
>
> I'm currently using my host for these operations:
> -Rtorrent + filebot + irssi + Rutorrent
> - Kodi 14 Client
> - Vdr Server
> - Mysql server for Kodi central repository
> - NFS server for exposing my nas drives
> - Some cron jobs to update kodi repository
>
> Usually, cpu usage stays 10 - 15% also with kodi
> reproducing media with ram almost free (890MB on 12GB)
>
> I've got a windows 8.1 OVMF virtual machine. No problem
> with 970 passthrough.
> Removed hyperV enlightenments,kvm=off with latest nvidia
> drivers.
>
> Assigned 3vcpus pinning 0-2 with virt-manager ui.
> Assigned a raw image of 100GB for testing. Virtio for disk
> and network.
> There's a bridge br0 on the host machine to provide
> connectivity.
> Using huge pages also.
> Latest ovmf from git.
>
> I use it as a steam streaming server by using only wired
> ethernet gigabit.
>
> My problem is only performance.
>
> When I fire up a game,qemu process use 90% of 3 cpus and I
> have framerate by 15 20 fps while gaming on bare metal
> goes always at 60fps. Tried with various
> games(Borderlands,KOF 13, Child of Light). Client is at
> 90% cpu.
>
> I used in the past proxmox for my kvm needs with a i5 3470
> and performance was much more(60 fps) that with kvm-qemu
> on my current distro.
> I can't think that there's so much difference between i5
> 3330 and i5 3470.
>
> Is there something I'm missing? I'm willing to post
> configuration or any other file that you need to do an
> analysis.
>
> The last thing that I'm going to do is to use a empty
> installation of Ubuntu with nothing installed aside kvm
> packages to see performance...
>
>
>
>
>
>
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