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Message-ID: <1526340668.32688.14.camel@freebsd.org>
Subject: Re: Feedback on benchmarking results of SDHCI and MMCCAM driver
From: Ian Lepore <ian@freebsd.org>
To: Udit agarwal <dev.madaari@gmail.com>, freebsd-questions@freebsd.org,
 freebsd-arm@freebsd.org, Ilya Bakulin <ilya@bakulin.de>
Cc: punitvara <punitvara@gmail.com>, Christian Mauderer
 <Christian.Mauderer@embedded-brains.de>
Date: Mon, 14 May 2018 17:31:08 -0600
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On Tue, 2018-05-15 at 02:48 +0530, Udit agarwal wrote:
> Hi,
> I have conducted several sd card benchmarking tests on FreeBSD 11.1,
> with
> both SDHCI and the newly incorporated MMCCAM driver to compare their
> performance under different conditions.
> I have compiled the plots and raw data in this spreadsheet.
> <https://docs.google.com/spreadsheets/d/1_lf9S136z0tJyni9W3t1__Rlrkal
> 1fd6L7-vnlmYQpc/edit?usp=sharing>,
> 
> Please provide some feedback on the above results.
> 
> Regards,
> Udit agarwal

I'm not sure there's much use in testing with a 16MB blocksize on an
sdcard. There would likely be more value in testing a few more smaller
sizes, say 4, 16, 64, 256, 512k as being more representative of normal
IO, especially filesystem IO.

-- Ian