Performance disparity, problem found

[Fred Roller]

On 04/08/2010 10:34 AM, Dotan Cohen wrote:
> I have two machines that show very different performance numbers.
>
> After digging a little I found out that the first machine has, in
> /proc/cpuinfo:
> model name      : Intel(R) Celeron(R) M processor         1.00GHz
>    

Like my wallet there is little to no cache in this processor; therefore, 
poor performance.  Maybe has upto 512k cache?

> ...while the other has:
> model name      : Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz
>    

Four time the processor /and/ has 8Mb L2 cache (16 times the cache).  
This system will smoke the other.

     http://www.intel.com/products/processor/core2quad/specifications.htm

> ...and that seems to be the main difference.
>
> Now the problem is that /proc/cpuinfo is read only. Would it be possible
> to make /proc/cpuinfo writable so that I could do:
> echo -n "model name      : Intel(R) Core(TM)2 Quad CPU    Q6600  @
> 2.40GHz">  /proc/cpuinfo
>    

no.

> ...in the first machine and get a performance similar to the second machine?
>
>
>    
As mentioned, if they are supposed to be identical in hardware then you 
have a QC issue at your place of purchase.

-- 
Fred
www.fwrgallery.com

"Life is like linux, simple.  If you are fighting it you are doing something wrong."