Thats useful thanks! Is take4 with the updated u-boot/dt? Also your heat sink is very small. It would be interesting if a bigger one could get it to stay below cooling state 3 with this benchmark.
Still with the old u-boot/dt. Heatsink is tiny (still better than nothing). I will test new dtb later today.
cheers
(03-07-2016, 11:30 AM)Andrew2 Wrote: [ -> ] (03-06-2016, 08:04 PM)janjwerner Wrote: [ -> ]http://imgur.com/LyEl9dz
Ahem, the most important information is missing: How low has the clockspeed been reduced? Cooler state 2-3 and reaching 90°C... I would suspect heavy throttling happened.
Oh why didn't i see this yesterday ..
can you post the image with the CPU speed again please. Would also be interesting to see the difference when you updated the device tree.
Thanks!
(03-07-2016, 12:43 PM)longsleep Wrote: [ -> ] can you post the image with the CPU speed again please. Would also be interesting to see the difference when you updated the device tree.
Yes, this would really be interesting. But regarding 'raw performance' I made the experience that it's not worth a try to check the Pine64's real performance potential without a fan (I crashed mine yesterday, collision between fan and heatsink
so I'll have to wait for a new one)
BTW: Do you provide a new Xenial image soon or better upgrade the old one?
constants reminders of my sloppiness. updated the orignal post. sorry guys...
(03-07-2016, 01:34 PM)janjwerner Wrote: [ -> ] constants reminders of my sloppiness. updated the orignal post. sorry guys...
No worries
Thanks for updating.
I will publish a new Xenial image soon, fell asleep yesterday while building ..
(03-07-2016, 01:34 PM)janjwerner Wrote: [ -> ] constants reminders of my sloppiness. updated the orignal post. sorry guys...
Thx, cpufreq not exceeding 1008MHz through the whole test and most of the times even lower (816 MHz minimum). With your current cooling capabilities the A64 can be considered to be clocked with approx. 950MHz. By adding a fan you can improve your benchmark scores by factor 1.2 (when thinking about 1152 MHz max).
If
adopts our ideas regarding power through Euler connector, a perfect heatsink and a fan solution that doesn't suck after an extensive set of tests the Pine64 might also be overclocked up to 1200 MHz, 1248, 1296 or even 1344 MHz (most probably not without tweaking the dvfs settings, increasing VDD_CPUX voltage and therefore massively the need for heat dissipation) benchmark results will improve by factor 1.25 or even 1.4 (at 1344 MHz).
(using appropriate compiler switches and code optimizations might even work better
)
In case you want to improve SQLite performance you should buy another SD card that shows high IOPS (or use tempfs)since this is all that's 'tested' here. And with a fan you should already outperform RPi 3