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Re: [OpenNode-users] KVM Missing timer interrupts?
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From: <ope...@li...> - 2010-06-03 11:28:21
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Hello Andres,
I already use opennode-test, but it's true that I have to reboot to
get latest ovzkernel (kvm is up to date, although not build
specifically for the running kernel). I have 3 openvz ve's in
production, so I'll have to wait until tonight to reboot the server.
Thanks,
Julián J. M.
On Thu, Jun 3, 2010 at 11:38, <ope...@li...> wrote:
> Hi Juilán,
>
> Please disable in /etc/yum.repos.d/opennode opennode repo and enable
> opennode-test repo - then do yum update opennode and let it update to
> newer ovzkernel and kvm module (and reboot system afterwords to load new
> kernel) - see if it fixes your problems. But keep in mind that there can
> be other problems with opennode-test repo package versions - so avoid it
> doing on production servers.
>
> All the best,
>
> ----------------------------------------------
> Andres Toomsalu, an...@ac...
>
>
>
>
> ope...@li... wrote:
>> Hello,
>>
>> I have a working OpenVZ installation, and recently installed the kvm
>> packages from opennode. I managed to install 2 VMs, one with WinXP and
>> another with Win2003, both 32bits.
>>
>> The problem is that the guests slows down when there is no network
>> traffic, and recovers when I, for example, ping flood the guest IP
>> address.
>>
>> I don't know the cause, but it would seem that the guest is not
>> getting timer interrupts, and can only keep up when there is another
>> source of interrupts (network traffic).
>>
>> Hardware Node:
>>
>> # cat /proc/cpuinfo
>> processor : 0
>> vendor_id : GenuineIntel
>> cpu family : 6
>> model : 23
>> model name : Intel(R) Xeon(R) CPU E5405 @ 2.00GHz
>> stepping : 10
>> cpu MHz : 2000.028
>> cache size : 6144 KB
>> physical id : 0
>> siblings : 4
>> core id : 0
>> cpu cores : 4
>> apicid : 0
>> fpu : yes
>> fpu_exception : yes
>> cpuid level : 13
>> wp : yes
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
>> pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm
>> constant_tsc pni monitor ds_cpl vmx tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
>> bogomips : 4000.05
>> clflush size : 64
>> cache_alignment : 64
>> address sizes : 38 bits physical, 48 bits virtual
>> power management:
>>
>> (There are 8 cores in total.)
>>
>> #uname -a
>> Linux ns21xxxx.ovh.net 2.6.18-194.3.1.el5.028stab069.5 #1 SMP Tue May
>> 18 17:48:31 MSD 2010 x86_64 x86_64 x86_64 GNU/Linux
>>
>> # rpm -qa | grep kvm
>> etherboot-zroms-kvm-5.4.4-13.el5.centos
>> kmod-kvm-83-164.asys.8
>> kvm-83-164.asys.8
>> kvm-qemu-img-83-164.asys.8
>> kvm-tools-83-105.asys.22.4
>>
>> Guest xml config:
>> <domain type='kvm'>
>> <name>WinXP</name>
>> <uuid>7f119fd1-bbf3-64f6-17d5-e5263b6a1502</uuid>
>> <memory>1048576</memory>
>> <currentMemory>1048576</currentMemory>
>> <vcpu>1</vcpu>
>> <os>
>> <type arch='x86_64' machine='pc'>hvm</type>
>> <boot dev='hd'/>
>> </os>
>> <features>
>> <acpi/>
>> <pae/>
>> </features>
>> <clock offset='localtime'/>
>> <on_poweroff>destroy</on_poweroff>
>> <on_reboot>restart</on_reboot>
>> <on_crash>restart</on_crash>
>> <devices>
>> <emulator>/usr/libexec/qemu-kvm</emulator>
>> [...] The rest is trivial, ide HD (raw image), ide cdrom, and e1000 network.
>>
>> I initially installed XP with 2 vCPU. Changed it to 1 after reading
>> some posts regarding clock drifts... Didn't fix it, anyway.
>>
>>
>> This is the cmd line:
>> /usr/libexec/qemu-kvm -S -M pc -m 1024 -smp 1 -name WinXP -uuid
>> 7f119fd1-bbf3-64f6-17d5-e5263b6a1502 -no-kvm-pit-reinjection -monitor
>> pty -pidfile /var/run/libvirt/qemu//WinXP.pid -localtime -boot c
>> -drive file=/home/KVM/WinXPVM.img,if=ide,index=0,boot=on,format=raw
>> -drive file=/home/KVM/NetKVM-and-viostor.iso,if=ide,media=cdrom,index=2,format=raw
>> -net nic,macaddr=52:54:00:6a:d4:af,vlan=0,model=e1000 -net
>> tap,fd=15,script=,vlan=0,ifname=vnet0 -serial pty -parallel none -usb
>> -vnc 127.0.0.1:0
>>
>>
>>
>> Any idea on why it is happening?
>>
>> Thanks in advance,
>> Juilán J. M.
>>
>>
>
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--
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