Re: 13.0-RELEASE Poor performance on Raspberry pi 3 B+

From: Mark Millard via freebsd-arm <freebsd-arm_at_freebsd.org>
Date: Thu, 25 Nov 2021 03:52:07 UTC 
On 2021-Nov-24, at 19:11, Mark Millard <marklmi@yahoo.com> wrote:

> On 2021-Nov-24, at 18:51, Juan David Hurtado G <jdhurtado@orbiware.com> wrote:
> 
>> Thanks for the feedback !
>> 
>>> Very strange. I get
>> Can you share the brand model of the microSD cards that you are using? Just for reference.
>> 
>>> bob prohaska
>> 
>> 
>>> What specific version/variation of the RPi4B was in use?
>> I'm using raspberry pi 4 / 4 GB RAM
> 
> There are: v1.1, V1.2, and v1.4 revisions of that.
> Which?
> 
> (Hmm. got to go. . . .)

Can you see the labeling on the top of the SOC? If yes,

2711ZPKFSB06BOT
vs.
2711ZPKFSB06COT

Which is present?

>>> What RPi4B firmware vintage was in use?
>>> What U-Boot vintage was in use?
>>> What FreeBSD loader.efi vintage is n use?
>> 
>>> ===
>>> Mark Millard
>> 
>> This is what I get:
>> 
>> root@generic:~ # strings /boot/msdos/u-boot.bin | grep "U-Boot 2"
>> U-Boot 2020.10 (Apr 09 2021 - 03:55:54 +0000)
>> 
>> root@generic:~ # strings /boot/msdos/start4.elf | grep VC_BUILD_ID_
>> VC_BUILD_ID_USER: dom
>> VC_BUILD_ID_TIME: 12:10:40
>> VC_BUILD_ID_VARIANT: start
>> VC_BUILD_ID_TIME: Feb 25 2021
>> VC_BUILD_ID_BRANCH: bcm2711_2
>> VC_BUILD_ID_HOSTNAME: buildbot
>> VC_BUILD_ID_PLATFORM: raspberrypi_linux
>> VC_BUILD_ID_VERSION: 564e5f9b852b23a330b1764bcf0b2d022a20afd0 (clean)
>> 
>> PS: I've installed netBSD using the same card / pi 3 B+ combination and it runs ok at 50 MHz. I'll try tomorrow on the pi 4
>> 
>> ```
>> arm64# dmesg | grep sdmmc | grep MHz
>> [     2.009317] sdmmc1: 4-bit width, 50.000 MHz
>> ```



===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)