[Lubuntu-qa] tests of usb pendrive speed and ability to boot

[Nio Wiklund]

2014-01-23 06:45, Nio Wiklund skrev:
> 2014-01-22 21:36, Lars Noodén skrev:
>> On 22.01.2014 17:38, Nio Wiklund wrote:
>>> Hi everybody,
>>>
>>> I have tested some USB pendrives and published the results in a tutorial
>>> thread in the Ubuntu Forums
>>>
>>> http://ubuntuforums.org/showthread.php?t=2196858&p=12907085#post12907085
>>>
>>> http://ubuntuforums.org/showthread.php?t=2196858&p=12907221#post12907221
>>>
>>> I hope it can help when you need a new pendrive.
>>>
>>> Best regards
>>> Nio
>>
>> Interesting.
>>
>> Can you post the actual lines you used to test?  Also, did you try raw
>> throughput by writing the directly to the device?  of=/dev/sdb
>>
>> Also, the insides of a USB stick might be similar to those of an SD:
>>
>> http://media.ccc.de/browse/congress/2013/30C3_-_5294_-_en_-_saal_1_-_201312291400_-_the_exploration_and_exploitation_of_an_sd_memory_card_-_bunnie_-_xobs.html
>>
>> Apparenly the SDs contain a small Arm7.
>>
>> Regards,
>> /Lars
>>
> Hi Lars,
> 
> I'll upload what you need to repeat the tests, and I'll send you a mail
> when it will be available (not this morning but I hope later today).
> 
> My experience of flashing iso files to pendrives is that piping through
> pv hardly makes it slower than using dd directly (at least not more than
> the typical variation of repeated tests). But sure, it is worth testing.
> 
> I'll have a look at the link about SD memory cards.
> 
> Best regards
> Nio
> 
Hi again Lars,

Interesting lecture about flash memory :-)

I have uploaded the the usb-speed-test at

http://phillw.net/isos/linux-tools/usb-speed-test/

Best regards
Nio