Comment 387 for bug 1690085

(In reply to Panagiotis Malakoudis from comment #301)
> And if you want to test a single core benchmark pinned to a specific core to
> check what frequency can be reached, it is easy with following command:
> taskset -c 10 openssl speed rsa2048
>
> On my 1700X, cpupower monitor shows frequency up to 3880 for core 10 in the
> above benchmark.
>
> If you want to stress two cores, you can either run two commands, or:
> taskset -c 6,10 openssl speed -multi 2 rsa2048
>
> Two cores go up to 3800 on my 1700X. Three and above go only to 3500. Two
> cores+multithread (taskset -c 6,7,10,11 for example) go up to 3650. This is
> the point where the new ryzen 2XXX are better, they can use higher turbo
> when using >2 cores. It seems they can do 4000 MHz up to 4 cores/8 threads
> with XFR2.
No problem for it, i use -mmt1 2 3 4 etc for it with 7za b
And as you said, xfr and turbo are working.
Now i see that my performance under windows are better, i think it's because of timing for change frequencies who is smaller on windows. I'm going to tune it a bit for see, on windows better timing improve performance by ~10% iirc.

Yes they can.
between 4.05 et 4.075 GHz over eight cores. "