Re: Raspberry Pi 3B and pitiful network speeds

On 21/06/2021 3:31 pm, Mark Millard wrote:
> On 2021-Jun-20, at 20:27, MJ <mafsys1234 at gmail.com> wrote:
>
>> On 21/06/2021 1:04 pm, Mark Millard wrote:
>>> On 2021-Jun-20, at 19:16, MJ <mafsys1234 at gmail.com> wrote:
>>>
>>>
>>>> On 21/06/2021 7:29 am, Denis Ovsienko wrote:
>>>>> . . .
>>>>> As a separate note, in my setup ifconfig tells "100baseTX
>>>>> <full-duplex>", which is expected for RPI3B. In the original message it
>>>>> tells "1000baseT <full-duplex>", which means the board is RPI3B+ or
>>>> Hi Denis.
>>>>
>>>> Yes, you're correct. This is the 3B+. I apologize for misrepresenting it. It is also the earlier version board,
>>>>
>>>> Built in 2017. I think it's version 1.1 (it's in a case, I don't feel like dismantling it).
>>> I do not have access to such for any testing, just a 3B. (Not
>>> a reasonable comparison.) In checking on that, I ran into the
>>> following information:
>>>
>>> https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md
>>> only shows one revision for 3B+:
>>>
>>> Code	Model	Revision	RAM	Manufacturer
>>> . . .
>>> a020d3	3B+	1.3	1GB	Sony UK
>>> . . .
>>>
>>> Under RaspiOS the revision code shows up via: cat /proc/cpuinfo
>>>
>>> It was released in 2018. (See https://en.wikipedia.org/wiki/Raspberry_Pi .)
>> Here's the specifications:
>>
>> https://static.raspberrypi.org/files/product-briefs/Raspberry-Pi-Model-Bplus-Product-Brief.pdf
>>
>> This is the exact model. It was, I believe v1.1. Later release was v1.2
>>
>> If you do need convincing, I'm prepared to pull it apart and photograph it... :-)
> I do not expect that it will show any v1.? at all on
> the PCB, unfortunately.


You are correct.

I bit the bullet and pulled it out of the case (no broken tabs so that's my main concern appeased).

There's no version or anything on it. There is, however, two IC numbers:

1) FCC IC: 2ABCB-RPI3BP

2) IC: 20953-RPI3P

Anyway, version notwithstanding, it still appears FreeBSD is underwhelming when it comes to network speed on these devices given they're capable of 300Mbps.

>
> It is common for boards released towards the start of year Y
> to have PCBs that reference year Y-1. So I do not expect
> that a 2017 helps identify much either.

I just recall when I purchased it it was "early release".


> The only thing I know of that might well identify the v1.?
> vintage is to find the revision code via software, and see
> if it is a020d3 vs. something else. If it is a020d3, then
> the table at:
>
> https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md
Once I reassemble the unit I will put the Devuan card in and see if Linux can tell me more information.
> should apply and it would be v1.3 . Otherwise, the table is useless
> for the issue, having no other documented 3B+ codes. (They document
> that "there may be codes in use in the field that are not in this
> table".)
>
> It does not look like pulling it apart is likely to be worth it.
> If a check is made, the software check of the revision code looks
> more reasonable to me. But it is no big deal if you do not bother
> with such.

Now you say that :-)