linux-kernel - consistency: temperature versus metric bytes (was: Re: Why /proc/cpuinfo doesn't print L1,L2,L3 caches?)

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Date:	Wed, 26 Mar 2008 09:54:14 +0100 (CET)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	Chris Snook <csnook@...hat.com>
cc:	"J.C. Pizarro" <jcpiza@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: consistency: temperature versus metric bytes (was: Re: Why /proc/cpuinfo
 doesn't print L1,L2,L3 caches?)

On Tue, 25 Mar 2008, Chris Snook wrote:
> I think you want this:
> 
> /sys/devices/system/cpu/cpu0/cache
> 
> /proc/cpuinfo is intended to give a general summary of certain properties of
> the processor that tend to be particularly interesting, and present them all
> in one place.  It is not intended to expose everything the kernel knows about
> every processor on the system.

Oh my god! My caches run at different temperatures!! ;-)

| anakin$ cat /sys/devices/system/cpu/cpu0/cache/index*/size 
| 64K
| 64K
| 512K

Furthermore /proc/cpuinfo misses _more_ than 128 KiB:

| anakin$ cat /proc/cpuinfo 

    [...]

| cache size	: 512 KB
                  ^^^^^^

    [...]

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Network and Software Technology Center Europe
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