Performance Disparity

Date Thu, 01 Apr 2010 12:30:41 +0100

From Paulo Marques <>

Subject Performance disparity, problem found

Hi, all

I have two machines that show very different performance numbers.

After digging a little I found out that the first machine has, in


model name : Intel(R) Celeron(R) M processor 1.00GHz

while the other has:

model name : Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz

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

in the first machine and get a performance similar to the second machine?

via LKML: Paulo Marques: Performance disparity, problem found.