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From: Jens Axboe <[email protected]>
To: [email protected]
Subject: [PATCHSET 0/4] Add support for shared io-wq backends
Date: Thu, 23 Jan 2020 16:16:10 -0700	[thread overview]
Message-ID: <[email protected]> (raw)

Sometimes an applications wants to use multiple smaller rings, because
it's more efficient than sharing a ring. The downside of that is that
we'll create the io-wq backend separately for all of them, while they
would be perfectly happy just sharing that.

This patchset adds support for that. io_uring_params grows an 'id' field,
which denotes an identifier for the async backend. If an application
wants to utilize sharing, it'll simply grab the id from the first ring
created, and pass it in to the next one and set IORING_SETUP_SHARED. This
allows efficient sharing of backend resources, while allowing multiple
rings in the application or library.

Not a huge fan of the IORING_SETUP_SHARED name, we should probably make
that better (I'm taking suggestions).

-- 
Jens Axboe



             reply	other threads:[~2020-01-23 23:16 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-23 23:16 Jens Axboe [this message]
2020-01-23 23:16 ` [PATCH 1/4] io-wq: make the io_wq ref counted Jens Axboe
2020-01-23 23:16 ` [PATCH 2/4] io-wq: add 'id' to io_wq Jens Axboe
2020-01-23 23:16 ` [PATCH 3/4] io-wq: allow lookup of existing io_wq with given id Jens Axboe
2020-01-24  9:54   ` Stefan Metzmacher
2020-01-24 16:41     ` Jens Axboe
2020-01-23 23:16 ` [PATCH 4/4] io_uring: add support for sharing kernel io-wq workqueue Jens Axboe
2020-01-24  9:51 ` [PATCHSET 0/4] Add support for shared io-wq backends Stefan Metzmacher
2020-01-24 16:43   ` Jens Axboe
2020-01-24 19:14     ` Stefan Metzmacher
2020-01-24 21:37       ` Jens Axboe
2020-01-24 20:34 ` Pavel Begunkov
2020-01-24 21:38   ` Jens Axboe
2020-01-26  1:51 ` Daurnimator
2020-01-26 15:11   ` Pavel Begunkov
2020-01-26 17:00     ` Jens Axboe
2020-01-27 13:29       ` Pavel Begunkov
2020-01-27 13:39         ` Jens Axboe
2020-01-27 14:07           ` Pavel Begunkov
2020-01-27 19:39             ` Pavel Begunkov
2020-01-27 19:45               ` Jens Axboe
2020-01-27 20:33             ` Jens Axboe
2020-01-27 21:45               ` Pavel Begunkov
2020-01-27 22:40                 ` Jens Axboe
2020-01-27 23:00                   ` Jens Axboe
2020-01-27 23:17                     ` Pavel Begunkov
2020-01-27 23:23                       ` Jens Axboe
2020-01-27 23:25                         ` Pavel Begunkov
2020-01-27 23:38                           ` Jens Axboe
2020-01-28 10:01                             ` Stefan Metzmacher
2020-01-28 10:30                               ` Pavel Begunkov
2020-01-28 10:35                                 ` Stefan Metzmacher
2020-01-28 10:51                                   ` Pavel Begunkov

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