Re: [OpenNode-users] KVM Missing timer interrupts?

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I mean that (because I first installed manually the kvm and kmod-kvm
packages) i'm using kmod-kvm-83-164.asys.8, with ovhkernel ending in
.5, (instead of .6). I know it was a mistake ;), more info below.

While I'm waiting for reboot, I downloaded the XP VM to a local
vanilla Centos5.4 server, and it doesn't show the slow clock problem.
I'm hoping that the kernel upgrade resolves the issue.

# uname -r
2.6.18-194.3.1.el5.028stab069.5

Latest ovz kernel installed is
ovzkernel-2.6.18-194.3.1.el5.028stab069.6 (but need to reboot to use
it)

# rpm -ql kmod-kvm
/lib/modules/2.6.18-194.3.1.el5.028stab069.6/extra/kmod-kvm
/lib/modules/2.6.18-194.3.1.el5.028stab069.6/extra/kmod-kvm/ksm.ko
/lib/modules/2.6.18-194.3.1.el5.028stab069.6/extra/kmod-kvm/kvm-amd.ko
/lib/modules/2.6.18-194.3.1.el5.028stab069.6/extra/kmod-kvm/kvm-intel.ko
/lib/modules/2.6.18-194.3.1.el5.028stab069.6/extra/kmod-kvm/kvm.ko

# modprobe -l | grep kvm
/lib/modules/2.6.18-194.3.1.el5.028stab069.5/weak-updates/kmod-kvm/ksm.ko
/lib/modules/2.6.18-194.3.1.el5.028stab069.5/weak-updates/kmod-kvm/kvm.ko
/lib/modules/2.6.18-194.3.1.el5.028stab069.5/weak-updates/kmod-kvm/kvm-amd.ko
/lib/modules/2.6.18-194.3.1.el5.028stab069.5/weak-updates/kmod-kvm/kvm-intel.ko

Thanks for your help,
Julián.

On Thu, Jun 3, 2010 at 12:43,  <ope...@li...> wrote:
> What do you mean by:
> "kvm is up to date, although not build specifically for the running
> kernel" ?
>
> You must run correct version of opennode ovzkernel with specially build
> kvm module for it - otherwise problems are quaranteed (we build kvm
> module specially for every ovzkernel release).
> So please enable opennode-test and do "yum update opennode" - as
> opennode rpm has pre-set kernel and kvm module dependencys - so it
> ensures that matching ovzkernel and opennode kvm module are both
> installed. We provide ovzkernel through opennode repos - not loading it
> directly from official openvz repo - this is intentional for delaying
> kernel upgrades if we have not yet build kvm module for a new openvz kernel.
>
> Cheers,
>
> ----------------------------------------------
> Andres Toomsalu, an...@ac...
>
>
>
>
> ope...@li... wrote:
>> 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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