Re: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6

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On 2019/11/07 16:04, Andrea Vai wrote:
> Il giorno mer, 06/11/2019 alle 22.13 +0000, Damien Le Moal ha scritto:
>>
>>
>> Please simply try your write tests after doing this:
>>
>> echo mq-deadline > /sys/block/<name of your USB
>> disk>/queue/scheduler
>>
>> And confirm that mq-deadline is selected with:
>>
>> cat /sys/block/<name of your USB disk>/queue/scheduler
>> [mq-deadline] kyber bfq none
> 
> ok, which kernel should I test with this: the fresh git cloned, or the
> one just patched with Alan's patch, or doesn't matter which one?

Probably all of them to see if there are any differences.

> 
> Thanks, and bye,
> Andrea
> 
> 


-- 
Damien Le Moal
Western Digital Research




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