2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[David Balazic]

kernel 2.4.6-ac5
CPU AMD Duron 700

/proc/cpuinfo gives :
cache size: 64 KB

This is wrong :
 - the Duron has 192 kilobytes of cache ( 64 L1 I, 64 L1 D , 64 L2 unified )
 - what is KB ?
   - "kilo" is abbreviated to 'k' , not 'K'
   - "B" means "Bell" :-)

-- 
David Balazic
--------------
"Be excellent to each other." - Bill & Ted
- - - - - - - - - - - - - - - - - - - - - -

Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[Christian Bornträger]

> /proc/cpuinfo gives :
> cache size: 64 KB
>
> This is wrong :
>  - the Duron has 192 kilobytes of cache ( 64 L1 I, 64 L1 D , 64 L2 unified
> ) - what is KB ?

As far as I know older Durons have a bug. They report a wrong size for the 
cache.

>    - "kilo" is abbreviated to 'k' , not 'K'

Hmm, I think kilo is 1000 and K is 1024.

Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[Christian Bornträger]

> CPU AMD Duron 700
>
> /proc/cpuinfo gives :
> cache size: 64 KB

With an Athlon I get 256KB.
So I guess, that cache size shows only the 2nd level cache size.

Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[David Balazic]

Christian Bornträger wrote:
> 
> > CPU AMD Duron 700
> >
> > /proc/cpuinfo gives :
> > cache size: 64 KB
> 
> With an Athlon I get 256KB.
> So I guess, that cache size shows only the 2nd level cache size.

Well then it should say "L2 cache size:"
It is a bug in any case.

-- 
David Balazic
--------------
"Be excellent to each other." - Bill & Ted
- - - - - - - - - - - - - - - - - - - - - -

Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[David Balazic]

Christian Bornträger wrote:
> 
> > /proc/cpuinfo gives :
> > cache size: 64 KB
> >
> > This is wrong :
> >  - the Duron has 192 kilobytes of cache ( 64 L1 I, 64 L1 D , 64 L2 unified
> > ) - what is KB ?
> 
> As far as I know older Durons have a bug. They report a wrong size for the
> cache.

The kernel messages at boot have no trouble finding out the correct
cache info.

> >    - "kilo" is abbreviated to 'k' , not 'K'
> 
> Hmm, I think kilo is 1000 and K is 1024.


-- 
David Balazic
--------------
"Be excellent to each other." - Bill & Ted
- - - - - - - - - - - - - - - - - - - - - -

Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[William Scott Lockwood III]

It never ceases to amaze me how ANAL some people on this list are.  :-)

----- Original Message ----- 
From: "Ketil Froyn" <ketil@froyn.com>
To: "David Balazic" <david.balazic@uni-mb.si>
Cc: <linux-kernel@vger.kernel.org>
Sent: Tuesday, July 17, 2001 8:35 AM
Subject: Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo


| On Tue, 17 Jul 2001, David Balazic wrote:
| 
| > /proc/cpuinfo gives :
| > cache size: 64 KB
| >
| > This is wrong :
| >  - the Duron has 192 kilobytes of cache ( 64 L1 I, 64 L1 D , 64 L2 unified )
| >  - what is KB ?
| >    - "kilo" is abbreviated to 'k' , not 'K'
| >    - "B" means "Bell" :-)
| 
| I believe it is normal to write 'K' for 1024, 'k' for 1000 and 'B' for
| bytes and 'b' for bits.
| 
| Have a look at acronymfinder.com, they distinguish the capital and
| lowercase b for bits and bytes.
| 
| Ketil
ý:.žË›±Êâmçë¢kaŠÉb²ßìzwm…ébïîžË›±Êâmébžìÿ‘êçz_âžØ^n‡r¡ö¦zË\x1aëh™¨è­Ú&£ûàz¿äz¹Þ—ú+€Ê+zf£¢·hšˆ§~†­†Ûiÿÿïêÿ‘êçz_è®\x0fæj:+v‰¨þ)ߣømšSåy«\x1e­æ¶\x17…\x01\x06­†ÛiÿÿðÃ\x0fí»\x1fè®\x0få’i\x7f

Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[Ketil Froyn]

On Tue, 17 Jul 2001, David Balazic wrote:

> /proc/cpuinfo gives :
> cache size: 64 KB
>
> This is wrong :
>  - the Duron has 192 kilobytes of cache ( 64 L1 I, 64 L1 D , 64 L2 unified )
>  - what is KB ?
>    - "kilo" is abbreviated to 'k' , not 'K'
>    - "B" means "Bell" :-)

I believe it is normal to write 'K' for 1024, 'k' for 1000 and 'B' for
bytes and 'b' for bits.

Have a look at acronymfinder.com, they distinguish the capital and
lowercase b for bits and bytes.

Ketil

[OT] Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[Ketil Froyn]

Ouch, you got me there!! ;-)

Ketil

-----Original Message-----
Date: Tue, 17 Jul 2001 06:51:02 -0500
From: William Scott Lockwood III <thatlinuxguy@hotmail.com>
Reply-To: William Scott Lockwood III <scottlockwood@hotmail.com>
To: linux-kernel@vger.kernel.org
Subject: Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

It never ceases to amaze me how ANAL some people on this list are.  :-)

----- Original Message -----
From: "Ketil Froyn" <ketil@froyn.com>
To: "David Balazic" <david.balazic@uni-mb.si>
Cc: <linux-kernel@vger.kernel.org>
Sent: Tuesday, July 17, 2001 8:35 AM
Subject: Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo


| On Tue, 17 Jul 2001, David Balazic wrote:
|
| > /proc/cpuinfo gives :
| > cache size: 64 KB
| >
| > This is wrong :
| >  - the Duron has 192 kilobytes of cache ( 64 L1 I, 64 L1 D , 64 L2 unified )
| >  - what is KB ?
| >    - "kilo" is abbreviated to 'k' , not 'K'
| >    - "B" means "Bell" :-)
|
| I believe it is normal to write 'K' for 1024, 'k' for 1000 and 'B' for
| bytes and 'b' for bits.
|
| Have a look at acronymfinder.com, they distinguish the capital and
| lowercase b for bits and bytes.
|
| Ketil
N‹§²æìr¸›yúèšØb²X¬·ë\x1eÛazX§zéì¹»\x1c®&Þ–)îÆG«ébžØ^n‡r¡ö¦zË\x1aëh™¨è­Ú&¢ø\x1e®G«éh®\x03(­éšŽŠÝ¢j"ú\x1a¶^[m§ïÿ¾\a«‘êçzZ+ƒùšŽŠÝ¢j"ú!¶iO•æ¬z·švØ^\x14\x04\x1a¶^[m§ïÿÃ\f-»\x1a+ƒùdš_

Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[David Woodhouse]

thatlinuxguy@hotmail.com said:
> It never ceases to amaze me how ANAL some people on this list are.
> :-)

It's called attention to detail, and it's the _reason_ why a lot of people 
are here.

The correct prefix to signify a multiple of 1024 is 'Ki'.

Index: arch/i386/kernel/setup.c
===================================================================
RCS file: /inst/cvs/linux/arch/i386/kernel/setup.c,v
retrieving revision 1.4.2.57
diff -u -r1.4.2.57 setup.c
--- arch/i386/kernel/setup.c	2001/05/14 10:32:23	1.4.2.57
+++ arch/i386/kernel/setup.c	2001/07/17 15:13:54
@@ -2406,7 +2406,7 @@
 
 		/* Cache size */
 		if (c->x86_cache_size >= 0)
-			p += sprintf(p, "cache size\t: %d KB\n", c->x86_cache_size);
+			p += sprintf(p, "cache size\t: %d KiB\n", c->x86_cache_size);
 		
 		/* We use exception 16 if we have hardware math and we've either seen it or the CPU claims it is internal */
 		fpu_exception = c->hard_math && (ignore_irq13 || cpu_has_fpu);


--
dwmw2

[VERY OT] Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[William Scott Lockwood III]

Oh, I understand attention to detail.  After spending eight years in the United States Navy as a Hospital Corpsman, you either understand attention to detail, or you are not a Corpsman any longer.  :-)  It just struck me as funny that, while an understanding of attention to detail is important, so is the way in which information is communicated.  In fact, it's almost as important as the information itself.  I've seen more fights start over how something was said, or not said - I'm sure you get the picture.  :-)

Me, I mainly lurk here for that very reason - I've received too much hatemail from posting to the list, so I try to follow it instead and see what I can learn.  Today, I learned that multiples of 1024 is actually Ki.  Thank you!  I did not know that.

Scott
----- Original Message ----- 
From: "David Woodhouse" <dwmw2@infradead.org>
To: "William Scott Lockwood III" <scottlockwood@hotmail.com>
Cc: <linux-kernel@vger.kernel.org>
Sent: Tuesday, July 17, 2001 10:18 AM
Subject: Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo


| 
| thatlinuxguy@hotmail.com said:
| > It never ceases to amaze me how ANAL some people on this list are.
| > :-)
| 
| It's called attention to detail, and it's the _reason_ why a lot of people
| are here.
| 
| The correct prefix to signify a multiple of 1024 is 'Ki'.
| 
| Index: arch/i386/kernel/setup.c
| ===================================================================
| RCS file: /inst/cvs/linux/arch/i386/kernel/setup.c,v
| retrieving revision 1.4.2.57
| diff -u -r1.4.2.57 setup.c
| --- arch/i386/kernel/setup.c 2001/05/14 10:32:23 1.4.2.57
| +++ arch/i386/kernel/setup.c 2001/07/17 15:13:54
| @@ -2406,7 +2406,7 @@
| 
|   /* Cache size */
|   if (c->x86_cache_size >= 0)
| - p += sprintf(p, "cache size\t: %d KB\n", c->x86_cache_size);
| + p += sprintf(p, "cache size\t: %d KiB\n", c->x86_cache_size);
| 
|   /* We use exception 16 if we have hardware math and we've either seen it or the CPU claims it is internal */
|   fpu_exception = c->hard_math && (ignore_irq13 || cpu_has_fpu);
| 
| 
| --
| dwmw2
| 
| 
| -
| 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/
| 
ý:.žË›±Êâmçë¢kaŠÉb²ßìzwm…ébïîžË›±Êâmébžìÿ‘êçz_âžØ^n‡r¡ö¦zË\x1aëh™¨è­Ú&£ûàz¿äz¹Þ—ú+€Ê+zf£¢·hšˆ§~†­†Ûiÿÿïêÿ‘êçz_è®\x0fæj:+v‰¨þ)ߣømšSåy«\x1e­æ¶\x17…\x01\x06­†ÛiÿÿðÃ\x0fí»\x1fè®\x0få’i\x7f

Re: [VERY OT] Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[Alan Shutko]

"William Scott Lockwood III" <thatlinuxguy@hotmail.com> writes:

> Today, I learned that multiples of 1024 is actually Ki.  

It's a reasonably new standard that hasn't caught on, because many
people think that "kibibyte" is stupid.

-- 
Alan Shutko <ats@acm.org> - In a variety of flavors!
Tempt me with a spoon!

Re: [VERY OT] Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[Ignacio Vazquez-Abrams]

On Tue, 17 Jul 2001, Alan Shutko wrote:

> It's a reasonably new standard that hasn't caught on, because many
> people think that "kibibyte" is stupid.

Kibibbles N Bits! N Bits!! N Bits!!!

Sorry, I had to say it ;)

  http://www.koin.com/athome/wisebuys/athome-wisebuys-980223-184529.html

-- 
Ignacio Vazquez-Abrams  <ignacio@openservices.net>

Re: [VERY OT] Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo

[William Scott Lockwood III]

Well, it does sound stupid but hey - they have to call it something right?  I have always been a bit peeved that I get a 30 gig drive, take it home and plug it in only to find that it is actually much less than 30 gig.  :-)

----- Original Message ----- 
From: "Alan Shutko" <ats@acm.org>
To: "William Scott Lockwood III" <scottlockwood@hotmail.com>
Cc: "David Woodhouse" <dwmw2@infradead.org>; <linux-kernel@vger.kernel.org>
Sent: Tuesday, July 17, 2001 10:50 AM
Subject: Re: [VERY OT] Re: 2.4.6-ac5 gives wrong cache info for Duron in /proc/cpuinfo


| "William Scott Lockwood III" <thatlinuxguy@hotmail.com> writes:
| 
| > Today, I learned that multiples of 1024 is actually Ki.
| 
| It's a reasonably new standard that hasn't caught on, because many
| people think that "kibibyte" is stupid.
| 
| --
| Alan Shutko <ats@acm.org> - In a variety of flavors!
| Tempt me with a spoon!
| 
ý:.žË›±Êâmçë¢kaŠÉb²ßìzwm…ébïîžË›±Êâmébžìÿ‘êçz_âžØ^n‡r¡ö¦zË\x1aëh™¨è­Ú&£ûàz¿äz¹Þ—ú+€Ê+zf£¢·hšˆ§~†­†Ûiÿÿïêÿ‘êçz_è®\x0fæj:+v‰¨þ)ߣømšSåy«\x1e­æ¶\x17…\x01\x06­†ÛiÿÿðÃ\x0fí»\x1fè®\x0få’i\x7f