Long attach times attaching MTD to UBI

[Artem Bityutskiy]

On 09/29/2009 02:31 PM, Adrian Hunter wrote:
> David Lambert wrote:
>> Please excuse me if this is a naive question as I am a newbie to MTD
>> and flash file systems.
>>
>> I am attempting to enable UBIFS on an Atmel AT91RM9200 using kernel
>> version 2.6.30.1. One of the attractions was fast mount times compared
>> to JFFS2 etc. Unfortunately I am running into VERY long attach times
>> as witnessed below. Obviously I must be doing something very wrong as
>> the documentation indicates that attaching a 1G partition should take
>> around 2 seconds, but mine is over 8 minutes!
>
> Is your NAND slow? Have you configured UBI debugging checks turned on?

Please, measure your nand throughput withmtd_speedtest:

http://www.linux-mtd.infradead.org/doc/general.html#L_mtd_tests

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)