Re: [Qemu-devel] %cpu used by qemu-kvm processes

[Jean-Pierre Ribeauville]

Hi,

Not yet …
I’ ll do that  .

Is it a chance that it will be different with 2012R2  ?

Regards,


J.P.

De : Felipe Franciosi [mailto:fel...@nutanix.com]
Envoyé : lundi 22 février 2016 23:02
À : Jean-Pierre Ribeauville; Daniel P. Berrange
Cc : qemu-devel@nongnu.org
Objet : Re: [Qemu-devel] %cpu used by qemu-kvm processes

Out of curiosity:

I noticed your VM is called WS2008r2. Do you still see this high cpu 
utilisation with WS2012r2?

Thanks,
Felipe

From: 
<qemu-devel-bounces+felipe=nutanix@nongnu.org<mailto:qemu-devel-bounces+felipe=nutanix@nongnu.org>>
 on behalf of Jean-Pierre Ribeauville 
<jpribeauvi...@axway.com<mailto:jpribeauvi...@axway.com>>
Date: Friday, 19 February 2016 12:06
To: "Daniel P. Berrange" <berra...@redhat.com<mailto:berra...@redhat.com>>
Cc: "qemu-devel@nongnu.org<mailto:qemu-devel@nongnu.org>" 
<qemu-devel@nongnu.org<mailto:qemu-devel@nongnu.org>>
Subject: Re: [Qemu-devel] %cpu used by qemu-kvm processes

Hi,

As I'm  using a RHEV platform , most of these options are automatically 
adjusted  by ovirt ( I presume) .


Linux Guest:

qemu 120443  1  1 Feb16 ?00:59:57 /usr/libexec/qemu-kvm -name 
VM_RHEL7-1 -S -machine rhel6.5.0,accel=kvm,usb=off -cpu SandyBridge -m 4096 
-realtime mlock=off -smp 2,maxcpus=16,sockets=16,cores=1,threads=1 -uuid 
ad1a8b0e-f8b6-4038-be3d-275f38e66eb3 -smbios 
type=1,manufacturer=oVirt,product=oVirt 
Node,version=7.1-1.el7,serial=4C4C4544-0044-3710-8057-B6C04F4D3632,uuid=ad1a8b0e-f8b6-4038-be3d-275f38e66eb3
 -no-user-config -nodefaults -chardev 
socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-VM_RHEL7-1/monitor.sock,server,nowait
 -mon chardev=charmonitor,id=monitor,mode=control -rtc 
base=2016-02-16T15:13:59,driftfix=slew -global kvm-pit.lost_tick_policy=discard 
-no-hpet -no-shutdown -boot menu=on,strict=on -device 
piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device 
virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x6 -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,format=raw,serial= -device 
ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -drive 
file=/rhev/data-center/0002-0002-0002-0002-02c5/3988b428-7ca9-4348-9604-89a74e5954a2/images/9d1986c5-2306-47c4-a968-f5d892120b4e/4d0e24fe-4321-4088-a6d2-d4b1093e3df8,if=none,id=drive-virtio-disk0,format=raw,serial=9d1986c5-2306-47c4-a968-f5d892120b4e,cache=none,werror=stop,rerror=stop,aio=native
 -device 
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
 -netdev tap,fd=32,id=hostnet0,vhost=on,vhostfd=37 -device 
virtio-net-pci,netdev=hostnet0,id=net0,mac=00:1a:4a:5c:db:00,bus=pci.0,addr=0x3 
-chardev 
socket,id=charchannel0,path=/var/lib/libvirt/qemu/channels/ad1a8b0e-f8b6-4038-be3d-275f38e66eb3.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/ad1a8b0e-f8b6-4038-be3d-275f38e66eb3.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 
socket,id=charchannel2,path=//var/lib/libvirt/qemu/VM_RHEL7-1_omnivision_1.agent,server,nowait
 -device 
virtserialport,bus=virtio-serial0.0,nr=3,chardev=charchannel2,id=channel2,name=omnivision_1.agent
 -chardev pty,id=charconsole0 -device 
virtconsole,chardev=charconsole0,id=console0 -device usb-tablet,id=input0 -vnc 
10.147.60.186:5,password -k fr -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -msg timestamp=on
[root@ldc01omv01 Unix_Agents_And_Servers]#

Windows Guest :

qemu  47377  1 10 Feb15 ?09:48:47 /usr/libexec/qemu-kvm -name 
W2008R2-2 -S -machine rhel6.5.0,accel=kvm,usb=off -cpu SandyBridge,hv_relaxed 
-m 2048 -realtime mlock=off -smp 1,maxcpus=16,sockets=16,cores=1,threads=1 
-uuid b59a0b76-a04f-4bd8-ac8d-093ac558341f -smbios 
type=1,manufacturer=oVirt,product=oVirt 
Node,version=7.1-1.el7,serial=4C4C4544-0044-3710-8057-B6C04F4D3632,uuid=b59a0b76-a04f-4bd8-ac8d-093ac558341f
 -no-user-config -nodefaults -chardev 
socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-W2008R2-2/monitor.sock,server,nowait
 -mon chardev=charmonitor,id=monitor,mode=control -rtc 
base=2016-02-15T12:26:10,clock=vm,driftfix=slew -global 
kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown -boot menu=on,strict=on 
-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device 
virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x4 -device 
virtio-serial-pci,id=virtio-serial0,max_ports=16,bus=pci.0,addr=0x5 -drive 
if=none,id=drive-ide0-1-0,readonly=on,format=raw,serial= -device 
ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -drive 
file=/rhev/data-center/0002-0002-0002-0002-02c5/aa48bdee-af68-4

Re: [Qemu-devel] %cpu used by qemu-kvm processes

[Jean-Pierre Ribeauville]

=//var/lib/libvirt/qemu/W2008R2-2_omnivision_1.agent,server,nowait
 -device 
virtserialport,bus=virtio-serial0.0,nr=3,chardev=charchannel2,id=channel2,name=omnivision_1.agent
 -chardev pty,id=charconsole0 -device 
virtconsole,chardev=charconsole0,id=console0 -device usb-tablet,id=input0 -vnc 
10.147.60.186:4,password -k fr -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 
-incoming tcp:[::]:49152 -device 
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -msg timestamp=on

Thx.

Regards,

J.P.

-Message d'origine-
De : Daniel P. Berrange [mailto:berra...@redhat.com]
Envoyé : vendredi 19 février 2016 13:01
À : Jean-Pierre Ribeauville
Cc : qemu-devel@nongnu.org
Objet : Re: [Qemu-devel] %cpu used by qemu-kvm processes

On Fri, Feb 19, 2016 at 11:58:38AM +, Jean-Pierre Ribeauville wrote:
> Hi,
>
> My Guest users ask me why  , from Host point of view , there is a big 
> difference interm of CPU % used by qemu-kvmcontrolling processs :
>
> Result of  "top"  on the host :
>
> For Windows guests:
>
> 8680 qemu  20   0 4939588 4.092g   9668 S  12.6  8.7 927:46.78 qemu-kvm
> 47377 qemu  20   0 2903560 2.121g   9676 S  11.6  4.5 587:08.42 qemu-kvm
>
> For Linux Guests:
>
> 120443 qemu  20   0 4832180 1.312g   9628 S   1.7  2.8  59:43.79 qemu-kvm
> 43224 qemu  20   0 4825724 2.235g   9664 S   1.0  4.8 105:27.18 qemu-kvm
> 44894 qemu  20   0 4864728 1.450g   9648 S   1.0  3.1  41:30.73 qemu-kvm
> 45000 qemu  20   0 4862676 1.508g   9648 S   0.3  3.2  39:41.45 qemu-kvm
>
>
> These guests are just booted , nothing special running on it as shown by 
> "top"  ran on the Linux Guest :
>
> %Cpu(s):  0.0 us,  0.2 sy,  0.0 ni, 99.8 id,  0.0 wa,  0.0 hi,  0.0
> si,  0.0 st
>
> Or   on the Windows Guest
>
> C:\Users\Administrator>wmic cpu get loadpercentage LoadPercentage
> 0
> 0
>
> Any idea to help me to answer them ?

At the very least please show the command line arguments used to boot the 
windows guests, and the arguments used with the Linux guests. The choice of 
hardware config can have a significant impact on performance of different guests

Regards,
Daniel
--
|: http://berrange.com  -o-http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org  -o- http://virt-manager.org :|
|: http://autobuild.org   -o- http://search.cpan.org/~danberr/ :|
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[Qemu-devel] %cpu used by qemu-kvm processes

[Jean-Pierre Ribeauville]

Hi,

My Guest users ask me why  , from Host point of view , there is a big 
difference interm of CPU % used by qemu-kvmcontrolling processs :

Result of  "top"  on the host :

For Windows guests:

8680 qemu  20   0 4939588 4.092g   9668 S  12.6  8.7 927:46.78 qemu-kvm
47377 qemu  20   0 2903560 2.121g   9676 S  11.6  4.5 587:08.42 qemu-kvm

For Linux Guests:

120443 qemu  20   0 4832180 1.312g   9628 S   1.7  2.8  59:43.79 qemu-kvm
43224 qemu  20   0 4825724 2.235g   9664 S   1.0  4.8 105:27.18 qemu-kvm
44894 qemu  20   0 4864728 1.450g   9648 S   1.0  3.1  41:30.73 qemu-kvm
45000 qemu  20   0 4862676 1.508g   9648 S   0.3  3.2  39:41.45 qemu-kvm


These guests are just booted , nothing special running on it as shown by "top"  
ran on the Linux Guest :

%Cpu(s):  0.0 us,  0.2 sy,  0.0 ni, 99.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st

Or   on the Windows Guest

C:\Users\Administrator>wmic cpu get loadpercentage
LoadPercentage
0
0


Any idea to help me to answer them ?

Thx.

Reagrds,

J.P. Ribeauville


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[Qemu-devel] memory stats collect on Windows virtio-driver

[Jean-Pierre Ribeauville]

Hi,

By validating memory stats collect via this libvirt call :

virsh dommemstat win2k8r2-2 --period 20

I'm not able to get others tags than theses ones :

#virsh dommemstat win2k8r2-2
actual 2097152
rss 4729140


For a Linux Guest , it works:

# virsh dommemstat rhel6.1
actual 8192000
swap_in 36269076
swap_out 12422088
major_fault 1781322
minor_fault 9997036
unused 1705388
available 7982708
rss 7906532


Did I miss something ?

Is  there any plan to add these tags collect on Windows side ?



Thx for help.

Regards,


J.P. Ribeauville


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