Re: Performance test of X64 compared to arm

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On Fri, 30 May 2014, Gordan Bobic wrote:

> That'll be very dependant on the exact application, and compiler. If 
> you just want a very rough data point I guess you could benchmark a 
> sha512sum loop on a large file on tmpfs generated from /dev/urandom. 
> It's as meaningless a number as most, but a lot less meaningless than 
> BogoMIPS - all that measures is how fast the CPU can idle, which in 
> most cases nowdays is going to be the same as the CPU clock speed.

Actually the bogomips is now calibrated with a timer, regardless of the 
CPU clock speed.  The printing of the bogomips value has therefore been 
removed since it is even more meaningless than it used to be.

See https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9fc2105aea


Nicolas
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