From: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Paolo Valente <paolo.valente@linaro.org>,
Jens Axboe <axboe@kernel.dk>,
Linus Walleij <linus.walleij@linaro.org>,
linux-block <linux-block@vger.kernel.org>,
linux-mmc <linux-mmc@vger.kernel.org>,
linux-mtd@lists.infradead.org, Pavel Machek <pavel@ucw.cz>,
Ulf Hansson <ulf.hansson@linaro.org>,
Richard Weinberger <richard@nod.at>,
Artem Bityutskiy <dedekind1@gmail.com>,
Adrian Hunter <adrian.hunter@intel.com>, Jan Kara <jack@suse.cz>,
Andreas Herrmann <aherrmann@suse.com>,
Mel Gorman <mgorman@suse.com>,
Chunyan Zhang <zhang.chunyan@linaro.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
"'Paolo Valente' via bfq-iosched\"
<bfq-iosched@googlegroups.com>,
Oleksandr Natalenko <oleksandr@natalenko.name>,
Mark Brown <broonie@kernel.org>"@fuzix.org
Subject: Re: [PATCH] block: BFQ default for single queue devices
Date: Thu, 4 Oct 2018 20:25:53 +0100 [thread overview]
Message-ID: <20181004202553.71c2599c@alans-desktop> (raw)
In-Reply-To: <1538582091.205649.20.camel@acm.org>
> I agree with Jens that it's best to leave it to the Linux distributors to
> select a default I/O scheduler.
That assumes such a thing exists. The kernel knows what devices it is
dealing with. The kernel 'default' ought to be 'whatever is usually best
for this device'. A distro cannot just pick a correct single default
because NVME and USB sticks are both normal and rather different in needs.
Alan
WARNING: multiple messages have this Message-ID (diff)
From: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Jens Axboe <axboe@kernel.dk>,
Andreas Herrmann <aherrmann@suse.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Paolo Valente <paolo.valente@linaro.org>, Jan Kara <jack@suse.cz>,
Mel Gorman <mgorman@suse.com>,
Artem Bityutskiy <dedekind1@gmail.com>,
Richard Weinberger <richard@nod.at>,
Linus Walleij <linus.walleij@linaro.org>,
linux-mmc <linux-mmc@vger.kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Chunyan Zhang <zhang.chunyan@linaro.org>,
linux-block <linux-block@vger.kernel.org>,
"'Paolo Valente' via bfq-iosched\"
<bfq-iosched@googlegroups.com>,
Oleksandr Natalenko <oleksandr@natalenko.name>,
Mark Brown <broonie@kernel.org>"@fuzix.org,
linux-mtd@lists.infradead.org, Pavel Machek <pavel@ucw.cz>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] block: BFQ default for single queue devices
Date: Thu, 4 Oct 2018 20:25:53 +0100 [thread overview]
Message-ID: <20181004202553.71c2599c@alans-desktop> (raw)
In-Reply-To: <1538582091.205649.20.camel@acm.org>
> I agree with Jens that it's best to leave it to the Linux distributors to
> select a default I/O scheduler.
That assumes such a thing exists. The kernel knows what devices it is
dealing with. The kernel 'default' ought to be 'whatever is usually best
for this device'. A distro cannot just pick a correct single default
because NVME and USB sticks are both normal and rather different in needs.
Alan
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Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2018-10-04 19:25 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-02 12:43 [PATCH] block: BFQ default for single queue devices Linus Walleij
2018-10-02 12:43 ` Linus Walleij
2018-10-02 14:31 ` Jens Axboe
2018-10-02 14:31 ` Jens Axboe
2018-10-02 14:45 ` Linus Walleij
2018-10-02 14:45 ` Linus Walleij
2018-10-03 6:29 ` Paolo Valente
2018-10-03 6:29 ` Paolo Valente
2018-10-03 6:53 ` Linus Walleij
2018-10-03 13:25 ` Jan Kara
2018-10-04 7:45 ` Johannes Thumshirn
2018-10-04 7:45 ` Johannes Thumshirn
2018-10-04 8:24 ` Andreas Herrmann
2018-10-03 7:05 ` Artem Bityutskiy
2018-10-03 7:18 ` Linus Walleij
2018-10-03 7:42 ` Damien Le Moal
2018-10-03 7:42 ` Damien Le Moal
2018-10-03 8:28 ` Linus Walleij
2018-10-03 8:53 ` Damien Le Moal
2018-10-03 8:53 ` Damien Le Moal
2018-10-03 8:53 ` Damien Le Moal
2018-10-03 15:53 ` Paolo Valente
2018-10-03 15:53 ` Paolo Valente
2018-10-03 17:34 ` Bryan Gurney
2018-10-04 8:21 ` Linus Walleij
2018-10-04 9:56 ` Ulf Hansson
2018-10-03 12:51 ` Christoph Hellwig
2018-10-03 12:51 ` Christoph Hellwig
2018-10-03 14:58 ` Bart Van Assche
2018-10-03 14:58 ` Bart Van Assche
2018-10-03 15:01 ` Christoph Hellwig
2018-10-03 15:01 ` Christoph Hellwig
2018-10-03 15:15 ` Bart Van Assche
2018-10-03 15:15 ` Bart Van Assche
2018-10-05 6:24 ` Christoph Hellwig
2018-10-05 6:24 ` Christoph Hellwig
2018-10-03 15:52 ` Paolo Valente
2018-10-03 15:52 ` Paolo Valente
2018-10-03 15:52 ` Paolo Valente
2018-10-03 11:49 ` Oleksandr Natalenko
2018-10-03 11:49 ` Oleksandr Natalenko
2018-10-03 14:51 ` Mark Brown
2018-10-03 15:55 ` Paolo Valente
2018-10-03 15:55 ` Paolo Valente
2018-10-03 16:00 ` Bart Van Assche
2018-10-03 16:04 ` Paolo Valente
2018-10-03 16:04 ` Paolo Valente
2018-10-04 7:38 ` Jan Kara
2018-10-04 8:14 ` Linus Walleij
2018-10-04 10:13 ` Mark Brown
2018-10-04 15:10 ` Bart Van Assche
2018-10-04 15:26 ` Mark Brown
2018-10-05 9:49 ` Pavel Machek
2018-10-04 8:25 ` Linus Walleij
2018-10-03 15:54 ` Bart Van Assche
2018-10-03 15:54 ` Bart Van Assche
2018-10-03 16:02 ` Paolo Valente
2018-10-03 16:02 ` Paolo Valente
2018-10-03 16:09 ` Paolo Valente
2018-10-03 17:22 ` Paolo Valente
2018-10-03 17:22 ` Paolo Valente
2018-10-04 19:25 ` Alan Cox [this message]
2018-10-04 19:25 ` Alan Cox
2018-10-04 20:09 ` Bart Van Assche
2018-10-04 20:39 ` Paolo Valente
2018-10-04 20:39 ` Paolo Valente
2018-10-04 22:42 ` Bart Van Assche
2018-10-05 9:16 ` Jan Kara
2018-10-06 3:12 ` Bart Van Assche
2018-10-06 6:46 ` Paolo Valente
2018-10-06 6:46 ` Paolo Valente
2018-10-06 6:46 ` Paolo Valente
2018-10-06 16:20 ` Bart Van Assche
2018-10-06 16:20 ` Bart Van Assche
2018-10-06 16:46 ` Paolo Valente
2018-10-06 16:46 ` Paolo Valente
2018-10-06 16:46 ` Paolo Valente
2018-10-05 9:28 ` Paolo Valente
2018-10-05 9:28 ` Paolo Valente
2018-10-05 6:24 ` Artem Bityutskiy
2018-10-04 20:19 ` Paolo Valente
2018-10-04 20:19 ` Paolo Valente
2018-10-02 21:28 ` Richard Weinberger
2018-10-02 21:28 ` Richard Weinberger
2018-10-03 15:51 ` Paolo Valente
2018-10-03 15:51 ` Paolo Valente
2018-10-03 15:51 ` Paolo Valente
2018-10-05 8:04 ` Pavel Machek
2018-10-05 8:04 ` Pavel Machek
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