From: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
To: Con Kolivas <kernel@kolivas.org>
Cc: linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: Wrong cache size reported on Q6600
Date: Thu, 28 Jun 2007 16:33:13 -0700 [thread overview]
Message-ID: <20070628233312.GB30594@linux-os.sc.intel.com> (raw)
In-Reply-To: <200706290931.45355.kernel@kolivas.org>
On Fri, Jun 29, 2007 at 09:31:44AM +1000, Con Kolivas wrote:
> This is a Q6600 which has cache size of 8 MB. Unless it's reporting each
> half's effective L2, I think it should be reporting 8192 instead of 4096.
There are two L2's, each of 4MB. Each L2 shared by two cores.
thanks,
suresh
>
> On 2.6.22-rc6:
>
> cat /proc/cpuinfo
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 6
> model : 15
> model name : Intel(R) Core(TM)2 Quad CPU @ 2.40GHz
> stepping : 7
> cpu MHz : 2401.919
> cache size : 4096 KB
> physical id : 0
> siblings : 4
> core id : 0
> cpu cores : 4
> 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 lm
> constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
> bogomips : 4806.38
> 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 : 15
> model name : Intel(R) Core(TM)2 Quad CPU @ 2.40GHz
> stepping : 7
> cpu MHz : 2401.919
> cache size : 4096 KB
> physical id : 0
> siblings : 4
> core id : 1
> cpu cores : 4
> 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 lm
> constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
> bogomips : 4803.73
> clflush size : 64
> cache_alignment : 64
> address sizes : 36 bits physical, 48 bits virtual
> power management:
>
> processor : 2
> vendor_id : GenuineIntel
> cpu family : 6
> model : 15
> model name : Intel(R) Core(TM)2 Quad CPU @ 2.40GHz
> stepping : 7
> cpu MHz : 2401.919
> cache size : 4096 KB
> physical id : 0
> siblings : 4
> core id : 2
> cpu cores : 4
> 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 lm
> constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
> bogomips : 4803.86
> clflush size : 64
> cache_alignment : 64
> address sizes : 36 bits physical, 48 bits virtual
> power management:
>
> processor : 3
> vendor_id : GenuineIntel
> cpu family : 6
> model : 15
> model name : Intel(R) Core(TM)2 Quad CPU @ 2.40GHz
> stepping : 7
> cpu MHz : 2401.919
> cache size : 4096 KB
> physical id : 0
> siblings : 4
> core id : 3
> cpu cores : 4
> 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 lm
> constant_tsc pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
> bogomips : 4803.93
> clflush size : 64
> cache_alignment : 64
> address sizes : 36 bits physical, 48 bits virtual
> power management:
>
> --
> -ck
> -
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next prev parent reply other threads:[~2007-06-28 23:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-28 23:31 Wrong cache size reported on Q6600 Con Kolivas
2007-06-28 23:25 ` Kyle McMartin
2007-06-28 23:33 ` Siddha, Suresh B [this message]
2007-06-28 23:57 ` Con Kolivas
2007-06-29 15:31 ` Chuck Ebbert
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