All of lore.kernel.org
 help / color / mirror / Atom feed
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
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

  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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20070628233312.GB30594@linux-os.sc.intel.com \
    --to=suresh.b.siddha@intel.com \
    --cc=kernel@kolivas.org \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.