Re: Playing with BFQ

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> Il giorno 03 mag 2017, alle ore 11:16, Markus Trippelsdorf <markus@xxxxxxxxxxxxxxx> ha scritto:
> 
> On 2017.05.03 at 10:00 +0200, Sedat Dilek wrote:
>> On Tue, May 2, 2017 at 2:16 PM, Markus Trippelsdorf
>> <markus@xxxxxxxxxxxxxxx> wrote:
>>> On 2017.05.02 at 14:07 +0200, Sedat Dilek wrote:
>>>> On Tue, May 2, 2017 at 10:00 AM, Markus Trippelsdorf
>>>> <markus@xxxxxxxxxxxxxxx> wrote:
>>>>> On 2017.05.02 at 09:54 +0200, Sedat Dilek wrote:
>>>>>> Hi,
>>>>>> 
>>>>>> I want to play with BFQ.
>>>>>> 
>>>>>> My base is block-next as of 28-Apr-2017.
>>>> [...]
>>>>>> Not sure if the attached patches make sense (right now).
>>>>> 
>>>>> No, it doesn't make sense at all.
>>>> 
>>>> Hmm, I looked at 4.11.0-v8r11 and 0001 has exactly what my 2 patches do :-).
>>> 
>>> BFQ started as a conventional scheduler. But because mq is the way of
>>> the future it was ported before it was accepted into mainline.
>>> 
>> 
>> I am still playing and want to do my own experiences with BFQ.
>> 
>> Not sure if FIO is a good testcase-tool here.
>> 
>> So if MQ is the way why isn't the Kconfig called CONFIG_MQ_IOSCHED_BFQ
>> according to CONFIG_MQ_IOSCHED_DEADLINE?
> 
> Good point. The current naming is confusing.
> 
> Also:
> # cat /sys/block/sda/queue/scheduler
> mq-deadline [kyber] bfq none
> 
> These should all be prefixed with mq-.
> 

The logic here, as proposed by Jens, is not to add the mq tag when
there is no risk of ambiguity (such as between deadline and
mq-deadline). I'm open to any sensible choice.

Thanks,
Paolo

> -- 
> Markus





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