From: Stefan Roesch <[email protected]>
To: Jens Axboe <[email protected]>, Dave Chinner <[email protected]>
Cc: [email protected], [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected]
Subject: Re: [PATCH v7 00/15] io-uring/xfs: support async buffered writes
Date: Tue, 7 Jun 2022 09:41:34 -0700 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On 6/3/22 6:04 AM, Jens Axboe wrote:
> On 6/2/22 8:43 PM, Dave Chinner wrote:
>> On Thu, Jun 02, 2022 at 02:09:00AM -0600, Jens Axboe wrote:
>>> On 6/1/22 3:01 PM, Stefan Roesch wrote:
>>>> This patch series adds support for async buffered writes when using both
>>>> xfs and io-uring. Currently io-uring only supports buffered writes in the
>>>> slow path, by processing them in the io workers. With this patch series it is
>>>> now possible to support buffered writes in the fast path. To be able to use
>>>> the fast path the required pages must be in the page cache, the required locks
>>>> in xfs can be granted immediately and no additional blocks need to be read
>>>> form disk.
>>>
>>> This series looks good to me now, but will need some slight rebasing
>>> since the 5.20 io_uring branch has split up the code a bit. Trivial to
>>> do though, I suspect it'll apply directly if we just change
>>> fs/io_uring.c to io_uring/rw.c instead.
>>>
>>> The bigger question is how to stage this, as it's touching a bit of fs,
>>> mm, and io_uring...
>>
>> What data integrity testing has this had? Has it been run through a
>> few billion fsx operations with w/ io_uring read/write enabled?
>
> I'll let Stefan expand on this, but just mention what I know - it has
> been fun via fio at least. Each of the performance tests were hour long
> each, and also specific test cases were written to test the boundary
> conditions of what pages of a range where in page cache, etc. Also with
> data verification.
>
I performed the following tests:
- fio tests with various block sizes and different modes (psysnc, io_uring, libaio)
- fsx tests with one billion ops
- individual test program
- to test with different block sizes
- test short writes
- test holes
- test without readahead
> Don't know if fsx specifically has been used it.
>
prev parent reply other threads:[~2022-06-07 16:42 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-01 21:01 [PATCH v7 00/15] io-uring/xfs: support async buffered writes Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 01/15] mm: Move starting of background writeback into the main balancing loop Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 02/15] mm: Move updates of dirty_exceeded into one place Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 03/15] mm: Add balance_dirty_pages_ratelimited_flags() function Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 04/15] iomap: Add flags parameter to iomap_page_create() Stefan Roesch
2022-06-02 16:26 ` Darrick J. Wong
2022-06-01 21:01 ` [PATCH v7 05/15] iomap: Add async buffered write support Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 06/15] iomap: Return error code from iomap_write_iter() Stefan Roesch
2022-06-02 12:38 ` Matthew Wilcox
2022-06-02 17:08 ` Stefan Roesch
2022-06-06 16:39 ` Stefan Roesch
2022-06-06 19:18 ` Matthew Wilcox
2022-06-06 19:21 ` Stefan Roesch
2022-06-06 19:25 ` Matthew Wilcox
2022-06-06 19:28 ` Stefan Roesch
2022-06-06 20:30 ` Matthew Wilcox
2022-06-06 20:34 ` Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 07/15] fs: Add check for async buffered writes to generic_write_checks Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 08/15] fs: add __remove_file_privs() with flags parameter Stefan Roesch
2022-06-02 9:04 ` Jan Kara
2022-06-01 21:01 ` [PATCH v7 09/15] fs: Split off inode_needs_update_time and __file_update_time Stefan Roesch
2022-06-02 8:44 ` Jan Kara
2022-06-02 12:57 ` Matthew Wilcox
2022-06-02 21:04 ` Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 10/15] fs: Add async write file modification handling Stefan Roesch
2022-06-02 8:44 ` Jan Kara
2022-06-02 9:06 ` Jan Kara
2022-06-02 21:00 ` Stefan Roesch
2022-06-03 10:12 ` Jan Kara
2022-06-06 16:35 ` Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 11/15] fs: Optimization for concurrent file time updates Stefan Roesch
2022-06-02 8:59 ` Jan Kara
2022-06-02 21:06 ` Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 12/15] io_uring: Add support for async buffered writes Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 13/15] io_uring: Add tracepoint for short writes Stefan Roesch
2022-06-01 21:01 ` [PATCH v7 14/15] xfs: Specify lockmode when calling xfs_ilock_for_iomap() Stefan Roesch
2022-06-02 16:25 ` Darrick J. Wong
2022-06-01 21:01 ` [PATCH v7 15/15] xfs: Add async buffered write support Stefan Roesch
2022-07-01 4:39 ` Al Viro
2022-07-01 14:19 ` Jens Axboe
2022-07-01 14:30 ` Jens Axboe
2022-07-01 14:38 ` Jens Axboe
2022-07-01 18:05 ` Darrick J. Wong
2022-07-01 18:14 ` Jens Axboe
2022-07-05 13:47 ` Josef Bacik
2022-07-05 14:23 ` Goldwyn Rodrigues
2022-07-05 16:11 ` Christoph Hellwig
2022-06-02 8:09 ` [PATCH v7 00/15] io-uring/xfs: support async buffered writes Jens Axboe
2022-06-03 2:43 ` Dave Chinner
2022-06-03 13:04 ` Jens Axboe
2022-06-07 16:41 ` Stefan Roesch [this message]
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