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From: Bart Van Assche <bvanassche@acm.org>
To: Damien Le Moal <Damien.LeMoal@wdc.com>, Jens Axboe <axboe@kernel.dk>
Cc: "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	Christoph Hellwig <hch@lst.de>, Jaegeuk Kim <jaegeuk@kernel.org>,
	Adam Manzanares <Adam.Manzanares@wdc.com>,
	Ming Lei <ming.lei@redhat.com>, Hannes Reinecke <hare@suse.com>
Subject: Re: [PATCH 6/9] block/mq-deadline: Reduce the read expiry time for non-rotational media
Date: Thu, 27 May 2021 12:43:08 -0700	[thread overview]
Message-ID: <06958fb7-3d4c-13a1-26dd-55c8718952f4@acm.org> (raw)
In-Reply-To: <DM6PR04MB7081C2ED7E71979FED8CF68EE7239@DM6PR04MB7081.namprd04.prod.outlook.com>

On 5/26/21 8:27 PM, Damien Le Moal wrote:
> On 2021/05/27 10:02, Bart Van Assche wrote:
>> Rotational media (hard disks) benefit more from merging requests than
>> non-rotational media. Reduce the read expire time for non-rotational media
> 
> "Reduce the read expire time for non-rotational..." -> "Reduce the default read
> expire time for non-rotational..."
> 
>> to reduce read latency.
> 
> I am not against this, but I wonder if we should not let udev do that with some
> rules instead of adding totally arbitrary values here...

Hi Damien and Hannes,

I agree that it's better to configure the expiry time via udev so I'm
considering to leave this patch out.

Thanks,

Bart.

  reply	other threads:[~2021-05-27 19:43 UTC|newest]

Thread overview: 65+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-27  1:01 [PATCH 0/9] Improve I/O priority support Bart Van Assche
2021-05-27  1:01 ` [PATCH 1/9] block/mq-deadline: Add several comments Bart Van Assche
2021-05-27  3:03   ` Damien Le Moal
2021-05-27  6:45   ` Hannes Reinecke
2021-05-27 19:30     ` Bart Van Assche
2021-05-27  8:43   ` Johannes Thumshirn
2021-05-27 15:13   ` Himanshu Madhani
2021-05-27  1:01 ` [PATCH 2/9] block/mq-deadline: Add two lockdep_assert_held() statements Bart Van Assche
2021-05-27  2:25   ` Chaitanya Kulkarni
2021-05-27  3:09   ` Damien Le Moal
2021-05-27  6:46   ` Hannes Reinecke
2021-05-27  8:44   ` Johannes Thumshirn
2021-05-27 15:14   ` Himanshu Madhani
2021-05-27  1:01 ` [PATCH 3/9] block/mq-deadline: Remove two local variables Bart Van Assche
2021-05-27  2:26   ` Chaitanya Kulkarni
2021-05-27  3:11   ` Damien Le Moal
2021-05-27  6:46   ` Hannes Reinecke
2021-05-27  8:44   ` Johannes Thumshirn
2021-05-27 15:15   ` Himanshu Madhani
2021-05-27  1:01 ` [PATCH 4/9] block/mq-deadline: Rename dd_init_queue() and dd_exit_queue() Bart Van Assche
2021-05-27  2:27   ` Chaitanya Kulkarni
2021-05-27  3:13   ` Damien Le Moal
2021-05-27 19:33     ` Bart Van Assche
2021-05-27  6:47   ` Hannes Reinecke
2021-05-27  8:44   ` Johannes Thumshirn
2021-05-27 15:16   ` Himanshu Madhani
2021-05-27  1:01 ` [PATCH 5/9] block/mq-deadline: Improve compile-time argument checking Bart Van Assche
2021-05-27  2:28   ` Chaitanya Kulkarni
2021-05-27  3:24   ` Damien Le Moal
2021-05-27 19:38     ` Bart Van Assche
2021-05-28  1:42       ` Damien Le Moal
2021-05-27  6:48   ` Hannes Reinecke
2021-05-27  8:49   ` Johannes Thumshirn
2021-05-27 15:19   ` Himanshu Madhani
2021-05-27  1:01 ` [PATCH 6/9] block/mq-deadline: Reduce the read expiry time for non-rotational media Bart Van Assche
2021-05-27  2:30   ` Chaitanya Kulkarni
2021-05-27  3:27   ` Damien Le Moal
2021-05-27 19:43     ` Bart Van Assche [this message]
2021-05-27  6:52   ` Hannes Reinecke
2021-05-27 15:20   ` Himanshu Madhani
2021-05-27  1:01 ` [PATCH 7/9] block/mq-deadline: Reserve 25% of tags for synchronous requests Bart Van Assche
2021-05-27  3:33   ` Damien Le Moal
2021-05-27 20:00     ` Bart Van Assche
2021-05-27  6:54   ` Hannes Reinecke
2021-05-27 19:55     ` Bart Van Assche
2021-05-27  1:01 ` [PATCH 8/9] block/mq-deadline: Add I/O priority support Bart Van Assche
2021-05-27  3:48   ` Damien Le Moal
2021-05-27 20:12     ` Bart Van Assche
2021-05-27  7:07   ` Hannes Reinecke
2021-05-27 20:23     ` Bart Van Assche
2021-05-28  1:40       ` Damien Le Moal
2021-05-27  1:01 ` [PATCH 9/9] block/mq-deadline: Add cgroup support Bart Van Assche
2021-05-27  7:09   ` Hannes Reinecke
2021-05-27  6:25 ` [PATCH 0/9] Improve I/O priority support Wang Jianchao
2021-05-27  8:05   ` Wang Jianchao
2021-05-27 18:40     ` Bart Van Assche
2021-05-28  2:05       ` Wang Jianchao
2021-05-28  8:43         ` Paolo Valente
2021-05-28 16:28         ` Bart Van Assche
2021-05-27  8:56 ` Johannes Thumshirn
2021-05-27 17:23   ` Chaitanya Kulkarni
2021-05-27 19:00     ` Bart Van Assche
2021-05-27 17:58 ` Adam Manzanares
2021-05-27 18:53   ` Bart Van Assche
2021-05-27 22:45     ` Adam Manzanares

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