[Arm-netbook] A10 server dreamboard

[Enrico]

On Tue, May 29, 2012 at 5:14 PM, Gordan Bobic <gordan at bobich.net> wrote:
> You haven't made a case for why you'd actually need USB when you have
> serial console accessible via ssh.

I'll answer to this first because i have not understood why you are
being so aggressive, we are just sharing our experience and ideas.

If you want to think that usb was created for serial console access,
well....be it.


On Tue, May 29, 2012 at 5:14 PM, Gordan Bobic <gordan at bobich.net> wrote:
> On 05/29/2012 04:06 PM, Enrico wrote:
>> A nand flash easily outperforms a good uSD, especially on random
>> access.
>
> Random reads aren't a problem. Random writes on most flash that isn't
> proper SSD grade sucks:
>
> http://www.altechnative.net/2012/01/25/flash-module-benchmark-collection-sd-cards-cf-cards-usb-sticks/
>
> UBIFS or similar may glaze over it on NAND by linearizing writes in it's
> wear leveling - I haven't tried so cannot comment.
>
>> It will have only the rootfs so wearing will not be a problem.
>
> You'd be surprised. Just booting up typically causes 5-10MB to be
> written out to disk. Check vmstat -d after booting and after a bit of usage.

That's why in embedded systems you use a read only rootfs.

Enrico