From: Bart Van Assche <[email protected]>
To: Christoph Hellwig <[email protected]>, Keith Busch <[email protected]>
Cc: Keith Busch <[email protected]>,
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], Hannes Reinecke <[email protected]>,
"Martin K . Petersen" <[email protected]>
Subject: Re: [PATCHv10 9/9] scsi: set permanent stream count in block limits
Date: Wed, 30 Oct 2024 09:59:24 -0700 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On 10/29/24 9:55 PM, Christoph Hellwig wrote:
> For the temperature hints the only public user I known is rocksdb, and
> that only started working when Hans fixed a brown paperbag bug in the
> rocksdb code a while ago. Given that f2fs interprets the hints I suspect
> something in the Android world does as well, maybe Bart knows more.
UFS devices typically have less internal memory (SRAM) than the size of
a single zone. Hence, it helps UFS devices if it can be decided at the
time a write command is received where to send the data (SRAM, SLC NAND
or TLC NAND). This is why UFS vendors asked to provide data lifetime
information to zoned logical units. More information about UFS device
internals is available in this paper: Hwang, Joo-Young, Seokhwan Kim,
Daejun Park, Yong-Gil Song, Junyoung Han, Seunghyun Choi, Sangyeun Cho,
and Youjip Won. "{ZMS}: Zone Abstraction for Mobile Flash Storage." In
2024 USENIX Annual Technical Conference (USENIX ATC 24), pp. 173-189.
2024 (https://www.usenix.org/system/files/atc24-hwang.pdf).
Bart.
next prev parent reply other threads:[~2024-10-30 16:59 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-29 15:19 [PATCHv10 0/9] write hints with nvme fdp, scsi streams Keith Busch
2024-10-29 15:19 ` [PATCHv10 1/9] block: use generic u16 for write hints Keith Busch
2024-10-29 17:21 ` Bart Van Assche
2024-10-29 15:19 ` [PATCHv10 2/9] block: introduce max_write_hints queue limit Keith Busch
2024-10-29 15:19 ` [PATCHv10 3/9] statx: add write hint information Keith Busch
2024-10-29 15:19 ` [PATCHv10 4/9] block: allow ability to limit partition write hints Keith Busch
2024-10-29 15:23 ` Christoph Hellwig
2024-10-29 17:25 ` Bart Van Assche
2024-10-30 4:46 ` Christoph Hellwig
2024-10-30 20:11 ` Keith Busch
2024-10-30 20:26 ` Bart Van Assche
2024-10-30 20:37 ` Keith Busch
2024-10-30 21:15 ` Bart Van Assche
2024-10-29 15:19 ` [PATCHv10 5/9] block, fs: add write hint to kiocb Keith Busch
2024-10-29 15:19 ` [PATCHv10 6/9] io_uring: enable per-io hinting capability Keith Busch
2024-10-29 15:19 ` [PATCHv10 7/9] block: export placement hint feature Keith Busch
2024-10-29 15:19 ` [PATCHv10 8/9] nvme: enable FDP support Keith Busch
2024-10-30 0:24 ` Chaitanya Kulkarni
2024-10-29 15:19 ` [PATCHv10 9/9] scsi: set permanent stream count in block limits Keith Busch
2024-10-29 15:26 ` Christoph Hellwig
2024-10-29 15:34 ` Keith Busch
2024-10-29 15:37 ` Christoph Hellwig
2024-10-29 15:38 ` Keith Busch
2024-10-29 15:53 ` Christoph Hellwig
2024-10-29 16:22 ` Keith Busch
2024-10-30 4:55 ` Christoph Hellwig
2024-10-30 15:41 ` Keith Busch
2024-10-30 15:45 ` Christoph Hellwig
2024-10-30 15:48 ` Keith Busch
2024-10-30 15:50 ` Christoph Hellwig
2024-10-30 16:42 ` Keith Busch
2024-10-30 16:57 ` Christoph Hellwig
2024-10-30 17:05 ` Keith Busch
2024-10-30 17:15 ` Christoph Hellwig
2024-10-30 17:23 ` Keith Busch
2024-10-30 22:32 ` Keith Busch
2024-10-30 16:59 ` Bart Van Assche [this message]
2024-10-30 17:14 ` Christoph Hellwig
2024-10-30 17:44 ` Bart Van Assche
2024-10-29 17:18 ` Bart Van Assche
2024-10-30 5:42 ` Christoph Hellwig
2024-10-29 15:24 ` [PATCHv10 0/9] write hints with nvme fdp, scsi streams Christoph Hellwig
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