Date: Wed, 24 Nov 2021 07:53:52 -0800 From: bob prohaska <fbsd@www.zefox.net> To: Juan David Hurtado G <jdhurtado@orbiware.com> Cc: freebsd-arm@freebsd.org Subject: Re: 13.0-RELEASE Poor performance on Raspberry pi 3 B+ Message-ID: <20211124155352.GA26072@www.zefox.net> In-Reply-To: <CAL3Ut_Y_BLbGM1WZ%2B8JbkSp9F=s9_xcWbFikLpcOufioxd1m_g@mail.gmail.com> References: <CAL3Ut_bFZhWKThHJsPaa%2BP0JXH6-=e3Pxv3xF3Y0u9dXpQ3kZQ@mail.gmail.com> <CAL3Ut_Y_BLbGM1WZ%2B8JbkSp9F=s9_xcWbFikLpcOufioxd1m_g@mail.gmail.com>
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On Wed, Nov 24, 2021 at 09:33:33AM -0500, Juan David Hurtado G wrote: > Thanks to @evadot and @f451 on Discord, seems there is the issue: > > Raspberry Pi 3B+ > > ``` > root@generic:~ # dmesg | grep -i mmcsd > mmcsd0: 31GB <SDHC SPCC 2.0 SN 1072013D MFG 08/2017 by 49 SP> at mmc0 > 0.4MHz/4bit/65535-block > ``` > > Raspberry Pi 4 with a different card: > ``` > mmcsd0: 31GB <SDHC 00000 0.0 SN 0000509F MFG 09/2019 by 159 TI> at mmc1 > 0.4MHz/4bit/65535-block > ``` > > So no matter the pi or the card, the microsd clock is at 0.4MHz while in > raspios same cards gets 50 MHz apparently > > Seems that explain the behaviour... So is this a FreeBSD bug? or a card > issue even if I've tested with different cards? > > PS: A brand new sandisk ultra is on the way so I can test with it. > Very strange. I get bob@www:~ % dmesg | grep -i mmcsd mmcsd0: 64GB <SDHC EC2QT 3.0 SN 5A4667E1 MFG 08/2019 by 27 SM> at mmc0 50.0MHz/4bit/65535-block on an old Pi2 running FreeBSD www.zefox.net 12.2-STABLE FreeBSD 12.2-STABLE r370512 GENERIC arm and root@pelorus:/home/bob # dmesg | grep -i mmcsd mmcsd0: 16GB <SDHC SL16G 8.0 SN BAAB3C19 MFG 11/2016 by 3 SD> at mmc0 50.0MHz/4bit/65535-block on a Pi3 running FreeBSD pelorus.zefox.org 13.0-RELEASE FreeBSD 13.0-RELEASE #0 releng/13.0-n244733-ea31abc261f: Fri Apr 9 06:06:55 UTC 2021 root@releng1.nyi.freebsd.org:/usr/obj/usr/src/arm64.aarch64/sys/GENERIC arm64 HTH, bob prohaska
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