From: Christoph Hellwig <hch@lst.de>
To: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>,
Bart Van Assche <bvanassche@acm.org>,
Damien Le Moal <dlemoal@kernel.org>, Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org
Subject: Re: [PATCH 3/3] block/mq-deadline: Disable I/O prioritization in certain cases
Date: Wed, 13 Dec 2023 16:56:06 +0100 [thread overview]
Message-ID: <20231213155606.GA8748@lst.de> (raw)
In-Reply-To: <ZXiual-UkUY4OWY2@google.com>
On Tue, Dec 12, 2023 at 11:03:06AM -0800, Jaegeuk Kim wrote:
> As one of users of zoned devices, I disagree this is a broken model,
So you think that chasing potential for reordering all over the I/O
stack in perpetualality, including obscure error handling paths and
disabling features intentended to throttle and delay I/O (like
ioprio and cgroups) is not a broken model?
> it is essential to place the data per file to get better bandwidth. And for
> NAND-based storage, filesystem is the right place to deal with the more efficient
> garbage collecion based on the known data locations.
And that works perfectly fine match for zone append.
> That's why all the flash
> storage vendors adopted it in the JEDEC.
Everyone sucking up to Google to place their product in Android, yes..
> Agreed that zone append is nice, but
> IMO, it's not practical for production.
You've delivered exactly zero arguments for that.
next prev parent reply other threads:[~2023-12-13 15:56 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-05 5:32 [PATCH 0/3] Improve mq-deadline I/O priority support Bart Van Assche
2023-12-05 5:32 ` [PATCH 1/3] block/mq-deadline: Use dd_rq_ioclass() instead of open-coding it Bart Van Assche
2023-12-06 2:35 ` Damien Le Moal
2023-12-11 16:54 ` Christoph Hellwig
2023-12-05 5:32 ` [PATCH 2/3] block/mq-deadline: Introduce dd_bio_ioclass() Bart Van Assche
2023-12-06 2:35 ` Damien Le Moal
2023-12-11 16:55 ` Christoph Hellwig
2023-12-18 17:35 ` Bart Van Assche
2023-12-05 5:32 ` [PATCH 3/3] block/mq-deadline: Disable I/O prioritization in certain cases Bart Van Assche
2023-12-06 2:42 ` Damien Le Moal
2023-12-06 3:24 ` Bart Van Assche
2023-12-08 0:03 ` Bart Van Assche
2023-12-08 3:37 ` Damien Le Moal
2023-12-08 18:40 ` Bart Van Assche
2023-12-11 7:40 ` Damien Le Moal
2023-12-12 22:44 ` Bart Van Assche
2023-12-12 23:52 ` Damien Le Moal
2023-12-13 1:02 ` Bart Van Assche
2023-12-13 5:29 ` Damien Le Moal
2023-12-11 16:57 ` Christoph Hellwig
2023-12-11 17:20 ` Bart Van Assche
2023-12-12 15:40 ` Christoph Hellwig
2023-12-11 22:40 ` Damien Le Moal
2023-12-12 15:41 ` Christoph Hellwig
2023-12-12 17:15 ` Bart Van Assche
2023-12-12 17:18 ` Christoph Hellwig
2023-12-12 17:42 ` Bart Van Assche
2023-12-12 17:48 ` Christoph Hellwig
2023-12-12 18:09 ` Bart Van Assche
2023-12-12 18:13 ` Christoph Hellwig
2023-12-12 18:19 ` Bart Van Assche
2023-12-12 18:26 ` Christoph Hellwig
2023-12-12 19:03 ` Jaegeuk Kim
2023-12-12 23:44 ` Damien Le Moal
2023-12-13 16:49 ` Jaegeuk Kim
2023-12-13 22:55 ` Damien Le Moal
2023-12-13 15:56 ` Christoph Hellwig [this message]
2023-12-13 16:41 ` Jaegeuk Kim
2023-12-14 8:57 ` Christoph Hellwig
2023-12-14 17:22 ` Jaegeuk Kim
2023-12-15 1:12 ` Damien Le Moal
2023-12-15 2:03 ` Jaegeuk Kim
2023-12-15 2:20 ` Keith Busch
2023-12-15 4:49 ` Christoph Hellwig
2023-12-14 19:32 ` Bart Van Assche
2023-12-14 0:08 ` Bart Van Assche
2023-12-14 0:37 ` Damien Le Moal
2023-12-14 8:51 ` Christoph Hellwig
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