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Subject: Re: PROBLEM: Incorrect CPUs (Xeon 1.8 with HT) frequency ?
From: Justin Cormack <justin@street-vision.com>
To: "Andrey V. Ignatov" <andrey@emax.ru>
Cc: Kernel mailing list <linux-kernel@vger.kernel.org>
In-Reply-To: <62115845787.20030120183231@emax.ru>
References: <62115845787.20030120183231@emax.ru>
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Date: 20 Jan 2003 16:01:06 +0000
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On Mon, 2003-01-20 at 15:32, Andrey V. Ignatov wrote:
> I think that kernel detect my CPUs not correctly. I have box with dual
> Xeon CPU 1.80GHz and HT feature. Kernel successfully found all 4
> virtual CPUs but frequency of each CPUs is incorrect as I mean.
> My system build on Intel? E7500 chipset.
> I try kernels : 2.4.20 & 2.4.21-pre3...
> Output from /proc/cpuinfo (for each processor the same):
> vendor_id       : GenuineIntel
> cpu family      : 15
> model           : 2
> model name      : Intel(R) Xeon(TM) CPU 1.80GHz
> stepping        : 7
> cpu MHz         : 798.659
> cache size      : 512 KB
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> coma_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 2
> 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
> bogomips        : 1592.52

Some BIOSs on the Xeon boards dont seem to set the multiplier right. Set
it by hand in the BIOS (as a multiple of real FSB ie 100 for 400MHz bus,
133 for 533 bus).

Justin


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