blc
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 1:27 pm

Heater wrote:Is there anyway to fix the problem that when people post 3840 x 2160 resolution images here it's un-viewable in the Chrome browser?

Not to mention that it's nearly a one megabyte download which is painful on mobile devices.

And then someone quotes the post containing the image so the layout gets mangled twice!
Upload it to imgur and embed the "Large Thumbnail" version; imgur will provide BBCode which embeds the image and links to the full-res version. Of course that's not as easy as just clicking "Upload Attachment" when writing your post.

Heater
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 1:56 pm

Oddly Firefox displays a nice small image instead.
Memory in C++ is a leaky abstraction .

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GTR2Fan
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 1:59 pm

Heater wrote:Oddly Firefox displays a nice small image instead.
So does Chromium 48 here.
Pi2B Mini-PC/Media Centre: ARM=1GHz (+3), Core=500MHz, v3d=500MHz, h264=333MHz, RAM=DDR2-1200 (+6/+4/+4+schmoo). Sandisk Ultra HC-I 32GB microSD card on '50=100' OCed slot (42MB/s read) running Raspbian/KODI16, Seagate 3.5" 1.5TB HDD mass storage.

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rurwin
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 2:32 pm

I thought it was defined by the skin you chose. The default skin (raspite) shows small pics, but the other (prosilver) shows them at full size.

In prosilver, if you right-click them and select "View Image", the browser will automatically scale it so it fills the window. It's still a pain to have to scroll past though.

Heater
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 2:42 pm

Ah, ha, yep, raspite displays small images. Thanks.
Memory in C++ is a leaky abstraction .

Aydan
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 3:13 pm

RaTTuS wrote:so I have something funky going on on my Pi3
Do you have frequencies defined in you config.txt?
Regards
Aydan

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RaTTuS
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 3:20 pm

Aydan wrote:
RaTTuS wrote:so I have something funky going on on my Pi3
Do you have frequencies defined in you config.txt?
Regards
Aydan
from
cat /boot/config.txt |pastebinit
http://paste.debian.net/411393/

...
# Enable audio (loads snd_bcm2835)
dtparam=audio=on
is all that is there
this is a raspbian jessie not noobs downloaded yesterday
How To ask Questions :- http://www.catb.org/esr/faqs/smart-questions.html
WARNING - some parts of this post may be erroneous YMMV

1QC43qbL5FySu2Pi51vGqKqxy3UiJgukSX
Covfefe

Aydan
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 4:18 pm

what max cpu frequency does /sys/... or vcgencmd report? Maybe the governor doesn't kick in.

Regards
Aydan

clivem
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 6:18 pm

Fidelius wrote: Now still with a case on but containing the linked heat-sink, the internal 80° C sensor value is being reached much later (~15 minutes) and levels out at the ARM throttled-back to ~1050 MHz.
I've been doing some testing with Pi2B and Pi3B in same case type, 100% load on 4 CPU cores...... I end up with throttling on the Pi3B, resulting in a lower clock speed (<900M) on Pi3B, than Pi2B. LOL.

while true; do vcgencmd measure_temp && vcgencmd measure_clock arm; sleep 1; done

Pi2B
frequency(45)=900000000
temp=61.6'C
frequency(45)=900002000
temp=61.6'C
frequency(45)=900000000
temp=62.1'C
frequency(45)=900000000
temp=61.6'C

Pi3B
temp=83.7'C
frequency(45)=813000000
temp=84.2'C
frequency(45)=811000000
temp=84.2'C
frequency(45)=818000000
temp=84.2'C
frequency(45)=804000000
temp=84.2'C
frequency(45)=834000000

skspurling
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 6:26 pm

So, here's an idea. The Raspberry Pi official Tea Hat!
small pump that fills a sealed resevoir connected by an aluminum finger on the SoC to heat the water and draw heat away. Once it reaches the proper temp, pump the hot water into a brewing chamber, that has a timed release for the perfect cup of tea....

Maybe? It would be great to make use of the Pi in the IoT (Internet of Tea's).

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ric96
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 6:29 pm

skspurling wrote:So, here's an idea. The Raspberry Pi official Tea Hat!
small pump that fills a sealed resevoir connected by an aluminum finger on the SoC to heat the water and draw heat away. Once it reaches the proper temp, pump the hot water into a brewing chamber, that has a timed release for the perfect cup of tea....

Maybe? It would be great to make use of the Pi in the IoT (Internet of Tea's).
Bwahahaha :D :D
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hippy
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Thu Mar 03, 2016 6:54 pm

I am going to buy two Pi 3B's, slap them either side of a slice of bread, and make an internet toaster :mrgreen:

nooryani84
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 1:12 am

This is rather worrying. I just ordered a Pi3 to use for emulation and Kodi. I had no intention of adding a heatsink to my unit as I would expect it to run without throttling at stock speeds (otherwise i expect a heatsink would already be default)

So do i need to return the Pi and wait for the next gen of Pis? Dont really want to order additional gear as it is quite expensive with shipping in my country. Very unfortunate...

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ric96
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 1:20 am

nooryani84 wrote:This is rather worrying. I just ordered a Pi3 to use for emulation and Kodi. I had no intention of adding a heatsink to my unit as I would expect it to run without throttling at stock speeds (otherwise i expect a heatsink would already be default)

So do i need to return the Pi and wait for the next gen of Pis? Dont really want to order additional gear as it is quite expensive with shipping in my country. Very unfortunate...
I don't think you will be hitting throttling temps on kodi. It only throttles under very heavy load.
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nooryani84
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 1:23 am

Even with high bitrate 1080p video? I would have waited with my order had i known this. I am a bit surprised this wasn't mentioned.... they would know this from QA

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ric96
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 1:25 am

nooryani84 wrote:Even with high bitrate 1080p video? I would have waited with my order had i known this. I am a bit surprised this wasn't mentioned.... they would know this from QA
Yes even with high bitrate 1080p video as cpu is not used for video decoding.
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twitter @sahajsarup
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 1:27 am

nooryani84 wrote:Dont really want to order additional gear as it is quite expensive with shipping in my country.
Roughly where in the world are you? Even if you do need a heatsink, a suitable one can be had for well under $2US.
Pi2B Mini-PC/Media Centre: ARM=1GHz (+3), Core=500MHz, v3d=500MHz, h264=333MHz, RAM=DDR2-1200 (+6/+4/+4+schmoo). Sandisk Ultra HC-I 32GB microSD card on '50=100' OCed slot (42MB/s read) running Raspbian/KODI16, Seagate 3.5" 1.5TB HDD mass storage.

nooryani84
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 1:28 am

I had planned to use it for emulation as well. Whats the point with a 1200 Mhz clockspeed if it can only maintain it a few minutes? Will have to test it before i decide what to do i guess. Hope its not as bad as they say

nooryani84
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 1:29 am

GTR2Fan wrote:
nooryani84 wrote:Dont really want to order additional gear as it is quite expensive with shipping in my country.
Roughly where in the world are you? Even if you do need a heatsink, a suitable one can be had for well under $2US.
Norway. Just paid 130 usd on the pi, case, adapter and memory card. Shipping is also fairly expensive here.

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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 1:33 am

nooryani84 wrote:I had planned to use it for emulation as well. Whats the point with a 1200 Mhz clockspeed if it can only maintain it a few minutes? Will have to test it before i decide what to do i guess. Hope its not as bad as they say
If you are planning to use retro-pie, you are safe as again most of the graphics work is done by the gpu. Also these CPU stress test are a worst case scenario theoretically comparable to running Premiere Pro on a Pi3.
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 1:34 am

nooryani84 wrote:Shipping is also fairly expensive here.
This is about as big as you can go without overhanging other components. I guess the shipping price to Norway will show for you when you look at the link...

http://www.ebay.co.uk/itm/121655033206? ... EBIDX%3AIT
Pi2B Mini-PC/Media Centre: ARM=1GHz (+3), Core=500MHz, v3d=500MHz, h264=333MHz, RAM=DDR2-1200 (+6/+4/+4+schmoo). Sandisk Ultra HC-I 32GB microSD card on '50=100' OCed slot (42MB/s read) running Raspbian/KODI16, Seagate 3.5" 1.5TB HDD mass storage.

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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 1:35 am

Try searching ebay for "raspberry pi heatsinks".
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twitter @sahajsarup
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nooryani84
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 1:37 am

Will wait and see what happens. I hope u are right and PSX / SNES emulation uses gpu mostly

nooryani84
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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 2:12 am

Ok, so I may just order a set.

Are these too big?
15 x 15 x 8mm

http://digitalimpuls.no/PC-komponenter/ ... 0000120106

Edit: The shipping costs were not bad so went with this one http://thepihut.com/products/raspberry-pi-heatsink Hope it will be enough. Also ordered the one above, not sure which one is better for the Raspberry Pi. Suggestions?

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Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Fri Mar 04, 2016 5:15 am

nooryani84 wrote:Whats the point with a 1200 Mhz clockspeed if it can only maintain it a few minutes?
Yes, this behavior is new for us Pi users. So far with our Pi1 and Pi2 we never needed to worry about any overheating.

So it's indeed a bit disappointing when you intend to use the Pi3 inside a case – you won't be able to have 1200 MHz under full-load then, even with passive cooling (heatsink). When I open the case however, the Pi3 levels out at a few decades below 1200 MHz.

Greetings to Norway!

P.S. Full load meaning something like:

Code: Select all

stress --cpu 4 --timout 600

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