Koia
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Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 12:24 am

I have a Pi 3B+ v1.2 (no WiFi etc) and use it with 2018-06-27-raspbian-stretch.img, updated and upgraded. The Pi is extremely slow loading termimnal and other apps. Network bandwidth test with Chromium towards Swedish server shows about 0.2 Mb/s download speed. Running speedtest-cli shows > 20Mb/s. What is wrong?

wh7qq
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 12:35 am

Koia wrote:What is wrong?
Possibly nothing. What kind of memory are you using...size and class of uSD card? Download speed from the Swedish site means little...individual sites are all over the place for speed. The speedtest-cli test is more meaningful and I would be happy as a clam at 20 Mb/sec. What is your reference for "extremely slow". Have you actually timed the loading of the terminal? How do you connect to the internet?

LTolledo
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 3:06 am

slow compared to what?

RPi3B+ vs RPi1B+?
RPi3B+ vs other SBCs?
RPi3B+ vs intel 8086 pc?
RPi3B+ vs Intel I7-7700HQ winpc?

Anyway for my RPi3B+ speed test (in Chromium) in my place shows download speed of 38Mbps and upload speed of 35Mbps. .... Intel I7-720M winpc (using Chrome) reports almost the same.... so it could be bad LAN cable, slow Ethernet HUB switch (10 Mbps?), or slow internet provider... or combinations thereof...
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HawaiianPi
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 4:26 am

Koia wrote:
Tue Sep 11, 2018 12:24 am
I have a Pi 3B+ v1.2 (no WiFi etc)
No such thing. All 3B models have WiFi, so what do you really have?

and use it with 2018-06-27-raspbian-stretch.img, updated and upgraded.
Updated and upgraded how (commands used)?

The Pi is extremely slow loading termimnal and other apps.
Slow compared to what?

What kind of micro SD card are you using (brand/size/class)?

Network bandwidth test with Chromium towards Swedish server shows about 0.2 Mb/s download speed. Running speedtest-cli shows > 20Mb/s. What is wrong?
How fast is your Internet connection?

I can get 40/50 Mb/s on a 100/100 Mb/s connection using wireless with an actual Pi 3B+ model. By comparison an ASUS Tinker Board gets just under 60Mb/s D/U with an Ethernet connection, and my Win10 gaming laptop on wireless a few rooms away from the router gets 70/60 Mb/s.

I'm going to guess you really have a Pi 2B v1.2, which has the same SoC as the 3B, but clocked at a lower speed (900MHz vs 1.2GHz).

Check your model with the following command:

Code: Select all

cat /sys/firmware/devicetree/base/model;echo
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Koia
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 12:58 pm

Hi guys! Thanks!

The image file I mention above is loaded to a SanDisk Ultra Micro SDHC card with 16Gb, I do not have more definite info about it, but it does not matter in this case as you will see below:

I test bandwidth i Chromium at www.bredbandskollen.se. I am using Mobile Internet connection in Stockholm, varying from 10-40 Mb/s download speed depending of time of day.

I tested at 14:00 Stockholm time.

First test with Pi 3B shows 27Mb/s download speed

Second test with Pi 3B+ V1.2 shows only 0.5 Mb/s.

So, same internet connection, same SD card, same image file, all cables connected are the same, just switching between Pi 3B and Pi 3B+.

I have also tried Ubuntu Mate. Testing the same Ubuntu MATE image file on the same SD. I also updated the image file with rpi-update command as recommended. Works really fine on Pi 3B.

However kernel crash with Pi 3B+ shown in first lines of the load script output. 3B+ does not start at all.

I suspect that Pi 3B+ V1.2 uses a anotherl CPU than the one the kernels I have loaded in Raspberian and Ubuntu are intended for.

Does this trigger anyones idas, experiences.

Koia
Posts: 6
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 1:10 pm

Hi, I tested

cat /sys/firmware/devicetree/base/model;echo.

Says: Raspberry Pi Model B Plus Rev 1.2

Helps?

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DarkPlatinum
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 1:17 pm

Koia wrote:
Tue Sep 11, 2018 1:10 pm
Hi, I tested

cat /sys/firmware/devicetree/base/model;echo.

Says: Raspberry Pi Model B Plus Rev 1.2

Helps?
If terminal takes long time to load, then

1. Your sd card is rubbish or
2. Not enough space on SD card or
3. wifi country not set or
4. Too much cached files on memory or
5.Your Pi is underclocked
1 * Raspberry Pi Zero W, 1 * Raspberry Pi 2, 1 * Raspberry Pi 3 1 * Raspberry Pi 3B + :mrgreen:

Check Out My Raspberry Site (Run on a Raspberry Pi 3B :) ): https://html.dynu.net

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DarkPlatinum
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 1:21 pm

Koia wrote:
Tue Sep 11, 2018 1:10 pm
Hi, I tested

cat /sys/firmware/devicetree/base/model;echo.

Says: Raspberry Pi Model B Plus Rev 1.2

Helps?
if you are using a Raspberry Pi 3B+, the output should be Raspberry Pi 3 Model B Plus Rev 1.3
1 * Raspberry Pi Zero W, 1 * Raspberry Pi 2, 1 * Raspberry Pi 3 1 * Raspberry Pi 3B + :mrgreen:

Check Out My Raspberry Site (Run on a Raspberry Pi 3B :) ): https://html.dynu.net

pcmanbob
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 1:37 pm

Koia wrote:
Tue Sep 11, 2018 1:10 pm
Hi, I tested

cat /sys/firmware/devicetree/base/model;echo.

Says: Raspberry Pi Model B Plus Rev 1.2

Helps?
From that response You have the pi 1 B+ : https://www.raspberrypi.org/products/ra ... el-b-plus/

Image


and not the later pi 3B+ : https://www.raspberrypi.org/products/ra ... el-b-plus/

Image
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Koia
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 2:00 pm

Some CPU version info:
model name: ARMv6- compatible processor rev 7 (v61)
CPU implementer: 0x41 (History tells that there are two)
CPU revision: 7
Hardware: BCM2835
Revision: 900021

I have no idea of what kernel version that supports it and how to configure it.

I believed that the Kernel version in 4.14.50-v7 should solve my problems. It is for Rev 1.3 that is a 2018 model of Pi 3B+, while Rev 1.2 is from 2016 as I have read from History info.

Some help again.

pcmanbob
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 2:04 pm

Compare your pi to the images I posted which one does your pi look like ?

once we know that then we might be able to help.
We want information… information… information........................no information no help
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fruitoftheloom
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 2:09 pm

Koia wrote:
Tue Sep 11, 2018 2:00 pm
Some CPU version info:
model name: ARMv6- compatible processor rev 7 (v61)
CPU implementer: 0x41 (History tells that there are two)
CPU revision: 7
Hardware: BCM2835
Revision: 900021

I have no idea of what kernel version that supports it and how to configure it.

I believed that the Kernel version in 4.14.50-v7 should solve my problems. It is for Rev 1.3 that is a 2018 model of Pi 3B+, while Rev 1.2 is from 2016 as I have read from History info.

Some help again.

https://elinux.org/RPi_HardwareHistory


The latest release of Raspbian Stretch supports ALL versions of the Raspberry Pi SBC:

https://www.raspberrypi.org/downloads/raspbian/


.
Thinking outside the box is better than burying your head in the sand...

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DarkPlatinum
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 2:32 pm

Koia wrote:
Tue Sep 11, 2018 2:00 pm
Some CPU version info:
model name: ARMv6- compatible processor rev 7 (v61)
CPU implementer: 0x41 (History tells that there are two)
CPU revision: 7
Hardware: BCM2835
Revision: 900021

I have no idea of what kernel version that supports it and how to configure it.

I believed that the Kernel version in 4.14.50-v7 should solve my problems. It is for Rev 1.3 that is a 2018 model of Pi 3B+, while Rev 1.2 is from 2016 as I have read from History info.

Some help again.
On your Raspberry pi 3 NOT 3b+, do sudo raspi-config, then select update. After it finishes the SD should work properly in ur 3b+.

The latest stable kernel is 4.14.62-v7+
1 * Raspberry Pi Zero W, 1 * Raspberry Pi 2, 1 * Raspberry Pi 3 1 * Raspberry Pi 3B + :mrgreen:

Check Out My Raspberry Site (Run on a Raspberry Pi 3B :) ): https://html.dynu.net

fruitoftheloom
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 2:55 pm

DarkPlatinum wrote:
Tue Sep 11, 2018 2:32 pm
Koia wrote:
Tue Sep 11, 2018 2:00 pm
Some CPU version info:
model name: ARMv6- compatible processor rev 7 (v61)
CPU implementer: 0x41 (History tells that there are two)
CPU revision: 7
Hardware: BCM2835
Revision: 900021

I have no idea of what kernel version that supports it and how to configure it.

I believed that the Kernel version in 4.14.50-v7 should solve my problems. It is for Rev 1.3 that is a 2018 model of Pi 3B+, while Rev 1.2 is from 2016 as I have read from History info.

Some help again.
On your Raspberry pi 3 NOT 3b+, do sudo raspi-config, then select update. After it finishes the SD should work properly in ur 3b+.

The latest stable kernel is 4.14.62-v7+

Maybe so, but if the OP is running Raspbian Wheezy or Jessie your solution will not work ;)
Thinking outside the box is better than burying your head in the sand...

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HawaiianPi
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 4:53 pm

Koia wrote:
Tue Sep 11, 2018 1:10 pm
cat /sys/firmware/devicetree/base/model;echo.
Says: Raspberry Pi Model B Plus Rev 1.2
Well that explains it then. The old model B+ only has a single core processor, and even its single-core performance is far below that of a 3B(+). Also, it only has half a gig of RAM (512MB), compared to 1GB on newer models.

The Raspberry Pi 3B would be up to 10 times faster, and the latest 3B+ is even faster than that. Heck, even the $5 Pi Zero is faster. The old single core model B+ is the slowest Raspberry Pi (along with the other early single core models, A, A+ and original model B). You may be able to overclock it to 1GHz, which is the speed the Pi Zero runs at, but that's only a small improvement.
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Koia
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 9:10 pm

Hi, HawaiianPi!

That was really bad news. The kernel 4.14.50-v7 is the one I use and the latest I have found available on official place for download. There are evidently newer kernels but 14.14.50 should be as OK as 4.14.62 if the problem it is about the hardware in use.

I bought my Pi 3B+ V1.2 only a couple of months ago and I payed I think about 40$ for it. Could have found better use of money!

Thanks guys for help!

pfletch101
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Re: Pi 3B+ V1.2 extremely slow

Tue Sep 11, 2018 9:22 pm

Koia wrote:
Tue Sep 11, 2018 9:10 pm
Hi, HawaiianPi!

That was really bad news. The kernel 4.14.50-v7 is the one I use and the latest I have found available on official place for download. There are evidently newer kernels but 14.14.50 should be as OK as 4.14.62 if the problem it is about the hardware in use.

I bought my Pi 3B+ V1.2 only a couple of months ago and I payed I think about 40$ for it. Could have found better use of money!

Thanks guys for help!
If you were sold the old machine you apparently have as a 3B+, you need to go back to your seller and ask for your money back.

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HawaiianPi
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Re: Pi 3B+ V1.2 extremely slow

Wed Sep 12, 2018 10:43 am

pfletch101 wrote:
Tue Sep 11, 2018 9:22 pm
If you were sold the old machine you apparently have as a 3B+, you need to go back to your seller and ask for your money back.
Yup, this ^

What you have is NOT a Pi 3B+ v1.2 (as I said, there is no such thing). It's an old Pi1 model B+ from around 4 years ago (first release in the summer of 2014, if I remember correctly). Take a look at the pictures posted by pcmanbob to see the difference.

If you were actually supposed to receive a new Pi 3B+ then the seller needs to make this right.
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?

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B.Goode
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Re: Pi 3B+ V1.2 extremely slow

Wed Sep 12, 2018 11:03 am

HawaiianPi wrote:
Wed Sep 12, 2018 10:43 am
pfletch101 wrote:
Tue Sep 11, 2018 9:22 pm
If you were sold the old machine you apparently have as a 3B+, you need to go back to your seller and ask for your money back.
Yup, this ^

What you have is NOT a Pi 3B+ v1.2 (as I said, there is no such thing). It's an old Pi1 model B+ from around 4 years ago (first release in the summer of 2014, if I remember correctly). Take a look at the pictures posted by pcmanbob to see the difference.

If you were actually supposed to receive a new Pi 3B+ then the seller needs to make this right.

This whole situation looks quite confused and maybe will not be resolved by OS/kernel/firmware modifications.

The reports being given by @koia are mutually inconsistent: by reference to https://www.raspberrypi.org/documentati ... /README.md it seems that a device with Revision Code 900021, as stated, is actually an RPi A+ .

Rejecting the device as 'not as described' and insistence on a functional replacement is the only sensible course.

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