Feedback on FreeBSD SD card benchmarking results

[Ganbold Tsagaankhuu]

On Sun, May 13, 2018 at 1:43 PM, Udit agarwal <dev.madaari at gmail.com> wrote:

> Hi all,
> I did some benchmarking of a sd card on freebsd 11.1  with my objective
> being:
>
>    - To determine the effect of filesystem on SD card's performance with
>    two different drivers, SDHCI and SDIO driver.
>    - To compare the performance of SDHCI and SDIO driver, under different
>    conditions
>    - To analyze the effect of disk caching on Linux and FreeBSD
>
> Here are the results: https://docs.google.com/spreadsheets/d/1_
> lf9S136z0tJyni9W3t1__Rlrkal1fd6L7-vnlmYQpc/edit?usp=sharing
>
> I used IOZONE for benchmarking. However, it doesn't look like that i'm able
> to analyze the performance of disk caching. Using the same command on linux
> shows a wide variation after enabling/disabling disk caching, while on
> freebsd it shows no variation(see test 3 graphs on spreadsheet shared)
> that's wary!
>
> Apart from the benchmark i used, In what other way i can estimate the
> effect of disk caching on FreeBSD?
>


Not sure whether it will help you or not, but you can try benchmarks/fio
also just to see the difference.


Ganbold



>
> Regards,
>
> Udit agarwal
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