Performance disparity, problem found

Fred Roller fred at
Thu Apr 8 15:33:21 UTC 2010

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.

> ...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


> 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.


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

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