From: Christoph Hellwig <hch@lst.de>
To: Anuj gupta <anuj1072538@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
Christian Brauner <brauner@kernel.org>,
"Darrick J. Wong" <djwong@kernel.org>,
Carlos Maiolino <cem@kernel.org>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Anuj Gupta <anuj20.g@samsung.com>,
Kanchan Joshi <joshi.k@samsung.com>,
linux-block@vger.kernel.org, nvdimm@lists.linux.dev,
linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org
Subject: Re: support file system generated / verified integrity information
Date: Tue, 27 Jan 2026 16:16:09 +0100 [thread overview]
Message-ID: <20260127151609.GA1883@lst.de> (raw)
In-Reply-To: <CACzX3AuDkwEw3v0bNmYLk8updk1ghVJa-T9o=EHXor9FA7badw@mail.gmail.com>
On Tue, Jan 27, 2026 at 08:24:28PM +0530, Anuj gupta wrote:
> Hi Christoph,
>
> Here are the QD1 latency numbers (in usec)
Thanks a lot!
Adding in the baseline numbers, as I wanted to compare those:
> Intel Optane:
>
> Sequential read
> | size | baseline | xfs-bounce | xfs-pi |
> +------+----------+-----------+-----------+
> | 4k | 7.18 | 13.62 | 7.20 |
> | 64K | 36.40 | 99.66 | 34.16 |
> | 1M | 206.38 | 258.88 | 306.23 |
> +------+----------+------------+----------+
So for 4k and 64k reads we basically get back to the baseline.
The 1M numbers are puzzling, though. I wonder if we need to
add WQ_CPU_INTENSIVE or do some other tweaks to the XFS I/O
completion workqueue so that we don't overload the scheduler.
next prev parent reply other threads:[~2026-01-27 15:16 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-21 6:43 support file system generated / verified integrity information Christoph Hellwig
2026-01-21 6:43 ` [PATCH 01/15] block: factor out a bio_integrity_action helper Christoph Hellwig
2026-01-23 0:01 ` Darrick J. Wong
2026-01-23 6:03 ` Christoph Hellwig
2026-01-23 7:13 ` Darrick J. Wong
2026-01-26 5:03 ` Christoph Hellwig
2026-01-25 19:46 ` Kanchan Joshi
2026-01-27 14:07 ` Martin K. Petersen
2026-01-27 14:55 ` Anuj gupta
2026-01-21 6:43 ` [PATCH 02/15] block: factor out a bio_integrity_setup_default helper Christoph Hellwig
2026-01-23 0:05 ` Darrick J. Wong
2026-01-23 6:08 ` Christoph Hellwig
2026-01-23 7:14 ` Darrick J. Wong
2026-01-25 20:14 ` Kanchan Joshi
2026-01-27 14:08 ` Martin K. Petersen
2026-01-27 14:55 ` Anuj gupta
2026-01-21 6:43 ` [PATCH 03/15] block: add a bdev_has_integrity_csum helper Christoph Hellwig
2026-01-23 0:07 ` Darrick J. Wong
2026-01-26 18:03 ` Kanchan Joshi
2026-01-27 14:08 ` Martin K. Petersen
2026-01-27 14:55 ` Anuj gupta
2026-01-21 6:43 ` [PATCH 04/15] block: prepare generation / verification helpers for fs usage Christoph Hellwig
2026-01-23 0:07 ` Darrick J. Wong
2026-01-26 18:04 ` Kanchan Joshi
2026-01-27 14:09 ` Martin K. Petersen
2026-01-27 14:56 ` Anuj gupta
2026-01-21 6:43 ` [PATCH 05/15] block: make max_integrity_io_size public Christoph Hellwig
2026-01-23 0:08 ` Darrick J. Wong
2026-01-26 18:04 ` Kanchan Joshi
2026-01-27 14:10 ` Martin K. Petersen
2026-01-27 14:56 ` Anuj gupta
2026-01-21 6:43 ` [PATCH 06/15] block: add fs_bio_integrity helpers Christoph Hellwig
2026-01-23 0:11 ` Darrick J. Wong
2026-01-26 18:12 ` Kanchan Joshi
2026-01-27 5:15 ` Christoph Hellwig
2026-01-27 14:12 ` Martin K. Petersen
2026-01-27 14:57 ` Anuj gupta
2026-01-21 6:43 ` [PATCH 07/15] block: pass a maxlen argument to bio_iov_iter_bounce Christoph Hellwig
2026-01-22 1:04 ` Darrick J. Wong
2026-01-22 6:04 ` Christoph Hellwig
2026-01-22 18:02 ` Darrick J. Wong
2026-01-27 14:12 ` Martin K. Petersen
2026-01-27 14:57 ` Anuj gupta
2026-01-21 6:43 ` [PATCH 08/15] iomap: refactor iomap_bio_read_folio_range Christoph Hellwig
2026-01-22 0:42 ` Darrick J. Wong
2026-01-21 6:43 ` [PATCH 09/15] iomap: pass the iomap_iter to ->submit_read Christoph Hellwig
2026-01-22 0:43 ` Darrick J. Wong
2026-01-21 6:43 ` [PATCH 10/15] iomap: only call into ->submit_read when there is a read_ctx Christoph Hellwig
2026-01-22 0:44 ` Darrick J. Wong
2026-01-22 2:44 ` Joanne Koong
2026-01-22 5:59 ` Christoph Hellwig
2026-01-22 18:02 ` Darrick J. Wong
2026-01-21 6:43 ` [PATCH 11/15] iomap: allow file systems to hook into buffered read bio submission Christoph Hellwig
2026-01-22 0:49 ` Darrick J. Wong
2026-01-22 6:01 ` Christoph Hellwig
2026-01-22 18:04 ` Darrick J. Wong
2026-01-21 6:43 ` [PATCH 12/15] iomap: add a bioset pointer to iomap_read_folio_ops Christoph Hellwig
2026-01-22 0:49 ` Darrick J. Wong
2026-01-21 6:43 ` [PATCH 13/15] iomap: support ioends for buffered reads Christoph Hellwig
2026-01-22 0:50 ` Darrick J. Wong
2026-01-21 6:43 ` [PATCH 14/15] iomap: support T10 protection information Christoph Hellwig
2026-01-22 0:59 ` Darrick J. Wong
2026-01-22 6:03 ` Christoph Hellwig
2026-01-21 6:43 ` [PATCH 15/15] xfs: " Christoph Hellwig
2026-01-22 1:02 ` Darrick J. Wong
2026-01-27 14:54 ` support file system generated / verified integrity information Anuj gupta
2026-01-27 15:16 ` Christoph Hellwig [this message]
2026-01-29 9:23 ` Anuj Gupta
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