Le 20/03/2013 13:48, Frank Agius a écrit :

On 3/19/2013 11:17 AM, Guillaume Gardet wrote:

...

Hi,

On a Beagleboard xM rev. B, I noticed that vanilla kernel 3.4.6 have the folowing bogomips for 300MHz and 800 MHz operations: 262.08 and 700.57.

With kernel 3.7.10, I have : 175.65 and 467.41 bogompis.

Any idea why bogomips are so low now?

I believe this is the reason for the BogoMIPS change:

http://www.spinics.net/lists/arm-kernel/msg221672.html

It looks like BogoMIPS reporting changed because of the delay routine patch introduced in 3.6. So the change in BogoMIPS is real, but should not be a concern.

Thanks for the pointer. So, it should not affect performances. I will try to bench it, to be sure there is no hidden problem. Thanks. Guillaume

frank agius

...

Guillaume

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