[CentOS-virt] guest got cpu mhz 0.000
Kuang-Chun Cheng
kccheng at LinuxDAQ-Labs.com
Sat Jul 17 02:50:45 EDT 2010
On Wed, Jul 14, 2010 at 10:04 AM, Kuang-Chun Cheng
<kccheng at linuxdaq-labs.com> wrote:
> Hi,
>
> I'm running CentOS 5.5 (on ThinkPad x61).
> I use KVM to run a SLES 11.0 (32bits, kernel 2.6.27.19-5-pae) guest.
> The "cat /proc/cpuinfo" got the result:
>
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 6
> model : 6
> model name : QEMU Virtual CPU version 0.9.1
> stepping : 3
> cpu MHz : 0.000
> cache size : 32 KB
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 4
> wp : yes
> flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx lm up pni
> bogomips : 1437.69
> clflush size : 64
> power management:
>
>
> The CPU Mhz is 0 !!!!
Strange ... but reboot dom0 seems fix the issue.
KC
> On dom0 (CentOS 5.5), the "cat /proc/cpuinfo" got:
>
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 6
> model : 23
> model name : Intel(R) Core(TM)2 Duo CPU T8100 @ 2.10GHz
> stepping : 6
> cpu MHz : 2094.743
> cache size : 3072 KB
> physical id : 0
> siblings : 2
> core id : 0
> cpu cores : 2
> apicid : 0
> fpu : yes
> fpu_exception : yes
> cpuid level : 10
> 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 ida pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr
> sse4_1 lahf_lm
> bogomips : 4189.48
> clflush size : 64
> cache_alignment : 64
> address sizes : 36 bits physical, 48 bits virtual
> power management:
>
> processor : 1
> vendor_id : GenuineIntel
> cpu family : 6
> model : 23
> model name : Intel(R) Core(TM)2 Duo CPU T8100 @ 2.10GHz
> stepping : 6
> cpu MHz : 2094.743
> cache size : 3072 KB
> physical id : 0
> siblings : 2
> core id : 1
> cpu cores : 2
> apicid : 1
> fpu : yes
> fpu_exception : yes
> cpuid level : 10
> 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 ida pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr
> sse4_1 lahf_lm
> bogomips : 4188.88
> clflush size : 64
> cache_alignment : 64
> address sizes : 36 bits physical, 48 bits virtual
> power management:
>
>
> I have another Thinkpad x201i which also use CentOS 5.5 to host SLES11 guest
> and that machine does not has this problem.
>
> Does anyone know what's wrong ?
> Can change CPU info of guest OS ? Thanks
>
> Regards,
> KC
>
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