linux-kernel - Re: [PATCH] block: BFQ default for single queue devices

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Date:   Wed, 3 Oct 2018 18:04:02 +0200
From:   Paolo Valente <paolo.valente@...aro.org>
To:     Bart Van Assche <bvanassche@....org>
Cc:     Oleksandr Natalenko <oleksandr@...alenko.name>,
        Jens Axboe <axboe@...nel.dk>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-block <linux-block@...r.kernel.org>,
        linux-mmc <linux-mmc@...r.kernel.org>,
        linux-mtd@...ts.infradead.org, Pavel Machek <pavel@....cz>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Richard Weinberger <richard@....at>,
        Artem Bityutskiy <dedekind1@...il.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Jan Kara <jack@...e.cz>, Andreas Herrmann <aherrmann@...e.com>,
        Mel Gorman <mgorman@...e.com>,
        Chunyan Zhang <zhang.chunyan@...aro.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        'Paolo Valente' via bfq-iosched 
        <bfq-iosched@...glegroups.com>, Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH] block: BFQ default for single queue devices



> Il giorno 03 ott 2018, alle ore 18:00, Bart Van Assche <bvanassche@....org> ha scritto:
> 
> On Wed, 2018-10-03 at 17:55 +0200, Paolo Valente wrote:
>> The problem, in particular, is that bfq is a complex beast, fighting
>> against a jungle of I/O issues.  You have to be really into bfq, even
>> to just know all of its features!
> 
> This is a problem by itself. I don't know anyone who wants to have to deal
> with I/O scheduler tunables.
> 

In fact, I designed and am constantly improving bfq, exactly so that
you don't have to touch any tunable.

Thanks,
Paolo

> Bart.
>