Date: Sun, 20 Jun 2021 22:55:01 -0700 From: Mark Millard via freebsd-arm <freebsd-arm@FreeBSD.org> To: MJ <mafsys1234@gmail.com> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@FreeBSD.org> Subject: Re: Raspberry Pi 3B and pitiful network speeds Message-ID: <23ABC6D1-F900-4114-8A15-6590EBD0A366@yahoo.com> In-Reply-To: <992E8217-8BE5-4B16-AD57-1B337E7A3CE5@yahoo.com> References: <fcd91ac5-c807-3409-d1b6-a41ba6fdc362@gmail.com> <20210620144513.1f91a68f@basepc> <169baf0b-3f3c-f1dc-4a6f-b8a0ef863f51@denninger.net> <20210620154105.0c83bbcc@basepc> <20210620222922.51da1818@basepc> <3fa3f2a6-8560-f413-b2eb-5c172ce025eb@gmail.com> <6B4F2FB6-ABA1-4CFA-BE2A-6A466C30FF02@yahoo.com> <a3d49ceb-2d73-294d-9522-4979f1bce767@gmail.com> <992E8217-8BE5-4B16-AD57-1B337E7A3CE5@yahoo.com>
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On 2021-Jun-20, at 22:31, Mark Millard <marklmi at yahoo.com> wrote: > On 2021-Jun-20, at 20:27, MJ <mafsys1234 at gmail.com> wrote: >=20 >> On 21/06/2021 1:04 pm, Mark Millard wrote: >>>=20 >>> On 2021-Jun-20, at 19:16, MJ <mafsys1234 at gmail.com> wrote: >>>=20 >>>=20 >>>> 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 >>>>=20 >>>> Hi Denis. >>>>=20 >>>> Yes, you're correct. This is the 3B+. I apologize for = misrepresenting it. It is also the earlier version board, >>>>=20 >>>> 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: >>>=20 >>> = https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-co= des/README.md >>> only shows one revision for 3B+: >>>=20 >>> Code Model Revision RAM Manufacturer >>> . . . >>> a020d3 3B+ 1.3 1GB Sony UK >>> . . . >>>=20 >>> Under RaspiOS the revision code shows up via: cat /proc/cpuinfo >>>=20 >>> It was released in 2018. (See = https://en.wikipedia.org/wiki/Raspberry_Pi .) >>=20 >> Here's the specifications: >>=20 >> = https://static.raspberrypi.org/files/product-briefs/Raspberry-Pi-Model-Bpl= us-Product-Brief.pdf >>=20 >> This is the exact model. It was, I believe v1.1. Later release was = v1.2 >>=20 >> If you do need convincing, I'm prepared to pull it apart and = photograph it... :-) >=20 > I do not expect that it will show any v1.? at all on > the PCB, unfortunately. >=20 > 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. >=20 > 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: >=20 > = https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-co= des/README.md >=20 > 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".) >=20 > 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. While I can not provide any better suggestions for the v1.? part of the overall question, I can provide availability for purchase date evidence: https://www.raspberrypi.org/blog/raspberry-pi-3-model-bplus-sale-now-35/ is the 14th Mar 2018 Eben Upton announcement that the "Raspberry Pi 3 Model B+ on sale now at $35". Yes, they picked pi-day, 03.14, to start availability for purchase. =3D=3D=3D Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)
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