From: Bart Van Assche <bvanassche@acm.org>
To: daejun7.park@samsung.com, KANCHAN JOSHI <joshi.k@samsung.com>,
Jens Axboe <axboe@kernel.dk>
Cc: "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Christoph Hellwig <hch@lst.de>,
Niklas Cassel <Niklas.Cassel@wdc.com>,
Avri Altman <Avri.Altman@wdc.com>, Bean Huo <huobean@gmail.com>,
Jan Kara <jack@suse.cz>, Christian Brauner <brauner@kernel.org>,
Jaegeuk Kim <jaegeuk@kernel.org>, Chao Yu <chao@kernel.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Jeff Layton <jlayton@kernel.org>,
Chuck Lever <chuck.lever@oracle.com>,
Seonghun Kim <seonghun-sui.kim@samsung.com>,
Jorn Lee <lunar.lee@samsung.com>,
Sung-Jun Park <sungjun07.park@samsung.com>,
Hyunji Jeon <hyunji.jeon@samsung.com>,
Dongwoo Kim <dongwoo7565.kim@samsung.com>,
Seongcheol Hong <sc01.hong@samsung.com>,
Jaeheon Lee <jaeheon7.lee@samsung.com>,
Wonjong Song <wj3.song@samsung.com>,
JinHwan Park <jh.i.park@samsung.com>,
Yonggil Song <yonggil.song@samsung.com>,
Soonyoung Kim <overmars.kim@samsung.com>,
Shinwoo Park <sw_kr.park@samsung.com>,
Seokhwan Kim <sukka.kim@samsung.com>
Subject: Re: (2) [PATCH v3 01/14] fs: Move enum rw_hint into a new header file
Date: Wed, 1 Nov 2023 09:45:46 -0700 [thread overview]
Message-ID: <c06b2624-b05b-48d4-840d-beb208aa33dc@acm.org> (raw)
In-Reply-To: <20231101063910epcms2p18f991db15958f246fa1654f2d412e176@epcms2p1>
On 10/31/23 23:39, Daejun Park wrote:
>> On 10/30/23 04:11, Kanchan Joshi wrote:
>>> On 10/18/2023 2:17 AM, Bart Van Assche wrote:
>> Thanks for having taken a look at this patch series. Jens asked for data
>> that shows that this patch series improves performance. Is this
>> something Samsung can help with?
>
> We analyzed the NAND block erase counter with and without stream separation
> through a long-term workload in F2FS.
> The analysis showed that the erase counter is reduced by approximately 40%
> with stream seperation.
> Long-term workload is a scenario where erase and write are repeated by
> stream after performing precondition fill for each temperature of F2FS.
Hi Daejun,
Thank you for having shared this data. This is very helpful. Since I'm
not familiar with the erase counter: does the above data perhaps mean
that write amplification is reduced by 40% in the workload that has been
examined?
Thanks,
Bart.
next prev parent reply other threads:[~2023-11-01 16:45 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-17 20:47 [PATCH v3 00/14] Pass data temperature information to SCSI disk devices Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 01/14] fs: Move enum rw_hint into a new header file Bart Van Assche
2023-10-30 11:11 ` Kanchan Joshi
2023-10-30 16:10 ` Bart Van Assche
[not found] ` <CGME20231017204823epcas5p2798d17757d381aaf7ad4dd235f3f0da3@epcms2p1>
2023-11-01 6:39 ` Daejun Park
2023-11-01 16:45 ` Bart Van Assche [this message]
[not found] ` <CGME20231017204823epcas5p2798d17757d381aaf7ad4dd235f3f0da3@epcms2p3>
2023-11-02 7:31 ` RE:(2) (2) " Daejun Park
2023-10-17 20:47 ` [PATCH v3 02/14] block: Restore data lifetime support in struct bio and struct request Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 03/14] fs: Restore write hint support Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 04/14] fs/f2fs: Restore data lifetime support Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 05/14] scsi: core: Query the Block Limits Extension VPD page Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 06/14] scsi_proto: Add structures and constants related to I/O groups and streams Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 07/14] sd: Translate data lifetime information Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 08/14] scsi_debug: Reduce code duplication Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 09/14] scsi_debug: Support the block limits extension VPD page Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 10/14] scsi_debug: Rework page code error handling Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 11/14] scsi_debug: Rework subpage " Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 12/14] scsi_debug: Implement the IO Advice Hints Grouping mode page Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 13/14] scsi_debug: Implement GET STREAM STATUS Bart Van Assche
2023-10-17 20:47 ` [PATCH v3 14/14] scsi_debug: Maintain write statistics per group number Bart Van Assche
2023-10-18 19:09 ` [PATCH v3 00/14] Pass data temperature information to SCSI disk devices Jens Axboe
2023-10-18 19:34 ` Bart Van Assche
2023-10-19 0:33 ` Damien Le Moal
2023-10-19 16:48 ` Bart Van Assche
2023-10-19 22:40 ` Damien Le Moal
2023-10-19 23:00 ` Damien Le Moal
2023-10-20 20:45 ` Bart Van Assche
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