Re: [fedora-arm] Performance test of X64 compared to arm

On Fri, May 30, 2014 at 03:57:52PM -0400, Robert Moskowitz wrote:
> So now I have some approximation of F20 running on my cubieboard2.
> So I want to do a performance comparison, and simple BOGOmips from
> /proc/cpuinfo probably does not tell the whole story of RISC vs
> CISC.
>
> So is there a tool available for F20 on both that I can use?

A quick-n-dirty CPU benchmark is to just run
openssl speed [algorithm]
and compare the results of the various hashing and encryption
algorithms. For example:

~]$ openssl speed md5
Doing md5 for 3s on 16 size blocks: 11289961 md5's in 3.00s
Doing md5 for 3s on 64 size blocks: 8221348 md5's in 2.99s
Doing md5 for 3s on 256 size blocks: 4560242 md5's in 3.00s
...
...
The 'numbers' are in 1000s of bytes per second processed.
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
md5 60213.13k 175975.34k 389140.65k 551768.06k 630786.73k

Another is to calculate pi out to some number of digits and time it.
For example, on my laptop with a Core i7-4600U, calculating to 10,000
digits takes nearly 2 minutes:

~]$ time bc -l <<<'scale=10000;pi=4*a(1);0'
0

real 1m48.646s
user 1m48.590s
sys 0m0.011s

Meanwhile, my Trimslice with a 1GHz Tegra 2 takes over 10 minutes:

~]$ time bc -l <<<'scale=10000;pi=4*a(1);0'
0

real 10m14.643s
user 10m14.523s
sys 0m0.028s

Jeff
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