RE: [Xen-devel] cpu recognition

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> I am seeing a weird anomaly where Xen is correctly 
> recognizing the speed of the cpu's in the box but Linux in 
> Domain-0 is not.  The cpu's are Intel Xeon 704x (dual core 
> 3GHz, either 7040 - 667 MHz FSB - or 7041 - 800 MHz FSB).  
> When I boot on a baremetal 2.6.12 Linux kernel it correctly 
> identifies the chip speed.  Has anyone seen this and is it a problem?

Please can you try running the following in dom0:

hwclock; date; sleep 10; hwclock; date

Thanks,
Ian
 
> xm info:
> 
> system                 : Linux
> host                   : ---
> release                : 2.6.12-xen0-smp
> version                : #1 SMP Mon Nov 28 13:59:13 CST 2005
> machine                : x86_64
> nr_cpus                : 16
> nr_nodes               : 1
> sockets_per_node       : 4
> cores_per_socket       : 2
> threads_per_core       : 2
> cpu_mhz                : 3002
> hw_caps                : 
> bfebfbff:20100800:00000000:00000080:000065bd:00000000:0
> 0000001
> memory                 : 16383
> free_memory            : 133
> xen_major              : 3
> xen_minor              : 0
> xen_extra              : -devel
> xen_caps               : xen-3.0-x86_64 hvm-3.0-x86_64
> platform_params        : virt_start=0xffff800000000000
> xen_changeset          : Mon Nov 28 11:22:02 2005 
> 8090:243265ade4045314ee4170436
> cc704afa
> cc_compiler            : gcc version 4.0.0 20050519 (Red Hat 4.0.0-8)
> cc_compile_by          : root
> cc_compile_domain      : ---
> cc_compile_date        : Mon Nov 28 13:56:08 CST 2005
> 
> /proc/cpuinfo:
> 
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 15
> model           : 4
> model name      :                    Genuine Intel(R) CPU 3.00GHz
> stepping        : 8
> cpu MHz         : 4222.844
> cache size      : 2048 KB
> physical id     : 0
> siblings        : 4
> core id         : 0
> cpu cores       : 2
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 5
> 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 est tm2 cid cx16 xtpr lahf_lm
> bogomips        : 8388.60
> clflush size    : 64
> cache_alignment : 128
> address sizes   : 40 bits physical, 48 bits virtual
> power management:
> </snip>
> 
> 
> 
> -- 
> Karl Rister
> 
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> 

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