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+---- Thread: Strange OpenSSL RSA speed Test issue (/showthread.php?tid=4816)
Strange OpenSSL RSA speed Test issue - _835_ - 07-26-2017
Hi guys,
i require your helps and ideas.
i run openssl speed rsa to evaluate the power of my PINE64+ board (i am a crypto guy).
i was a litle bit surprised to see big difference using different distribs :
- the Debian Jessie with Mate DE [3.10.102 BSP 2] by Lenny Raposo show me a nice 9.6 4096bits Private RSA / sec
while other dietPI and armbian get stuck to 6.4 4096bits Private RSA / sec.
So i decide to upgrade both the Debian Jessie Mate and dietPI to the latest kernel 3.10.105, run package update, then i force the CPU setting got from the debian to the dietPI :
sampling_down_factor = 1
sampling_rate = 2000000
sampling_rate_min=40000
up_threshold = 95
but got same result dietPI still show me 6.4 4096bits Private RSA / sec.
What do i miss ?
Any helps appreciate, thanks a lot
RE: Strange OpenSSL RSA speed Test issue - pfeerick - 07-26-2017
Check what scaling govenor is being used on the DietPi?
Code:
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governorIt has been set as interactive for a long time on the pine64 images... I think DietPi was a bit daft at one point and had it set at ondemand... maybe it still is? Also see what happens to your benchmark when you change it to performance.
Code:
sudo -i
echo performance> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
exitRE: Strange OpenSSL RSA speed Test issue - _835_ - 07-27-2017
It was set to 'ondemand',
but your proposal to set it to 'performance' is what i might have done first,
and now i know that the cpu scaling is not the key :-(
all cpu clock set to 1152Mhz ...give same openssl rsa speed measure : 6.4 :-( on the dietPi