Performance disparity, problem found
fred at fwrgallery.com
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
> 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
> ...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.
"Life is like linux, simple. If you are fighting it you are doing something wrong."
More information about the ubuntu-users