RE: CPU cache problem

From: Z F (mail4me9999@yahoo.com)
Date: Sat Dec 07 2002 - 13:40:38 EST


Hello Manish and Mark

The BIOS does not have any info about L2 cache accept for
enable/disable
switch.
I noticed that after the POST message in the table of all installed
devices it said CPU 1.7 GHz... Memory installed 256 M (RAM) and
CPU cache: NONE.

I have upgraded the BIOS on the system and now it says 128K, as it
should, according to CPU specifications.
Mark tells that /proc/cpuinfo reports L1 cache size (which I assume is
8K+12 K in my case, even though I do not understand what that means)
But how to check that L2 is operational?

For windows I have ASUSprobe software, which after the BIOS upgrade
started to report that CPU has L2 cache, but it reports it regardless
of BIOS switch(enable/disable) as if program simply reads the CPU
specifications. (Before BIOS upgrade it reported 0K L2 cache.)

The question I have is: Is it possible to tell whether or not
the kernel sees the L2 CPU cache and its size?

Thank you very much for your help

Lazar

--- Manish Lachwani <manish@Zambeel.com> wrote:
> Did you check in the BIOS if there is an L2 cache size mentioned? Not
> every
> BIOS supports it but you shoud check there ...
>
> Thanks
> -Manish
>
> -----Original Message-----
> From: Z F [mailto:mail4me9999@yahoo.com]
> Sent: Friday, December 06, 2002 8:32 PM
> To: linux-kernel@vger.kernel.org
> Subject: CPU cache problem
>
>
> Hello everybody
>
> Sorry to bother you with such a question, but I have a
> Intel 1.7GHz Celeron processor with ASUS P4S533 motherboard.
> The problem I have is that cat /proc/cpuinfo reports that
>
> cache size : 20 KB
>
> As far as I know, the CPU has 128K L2 cache.
>
> The kernel version installed on my computer is 2.4.18.
> I tried using cachesize=128 as a boot parameter, but it did not help.
> L2 cache is enabled in BIOS.
>
> Could someone tell me why it is happening, how to fix it and should I
> be
> worried that the motherboard is defective.
>
> Thank you very much for your kind help
>
> Lazar
>
> __________________________________________________
> Do you Yahoo!?
> Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
> http://mailplus.yahoo.com
> -
> 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/
> -
> 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/

__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com
-
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/



This archive was generated by hypermail 2b29 : Sat Dec 07 2002 - 22:00:30 EST