From: Ming Lei <ming.lei@redhat.com>
To: Uday Shankar <ushankar@purestorage.com>
Cc: Jens Axboe <axboe@kernel.dk>,
Caleb Sander Mateos <csander@purestorage.com>,
Andrew Morton <akpm@linux-foundation.org>,
Shuah Khan <shuah@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org, linux-doc@vger.kernel.org
Subject: Re: [PATCH v7 7/8] selftests: ublk: add test for per io daemons
Date: Thu, 29 May 2025 17:47:58 +0800 [thread overview]
Message-ID: <aDgtTqj-s_SN7wCK@fedora> (raw)
In-Reply-To: <20250527-ublk_task_per_io-v7-7-cbdbaf283baa@purestorage.com>
On Tue, May 27, 2025 at 05:01:30PM -0600, Uday Shankar wrote:
> Add a new test test_generic_12 which:
>
> - sets up a ublk server with per_io_tasks and a different number of ublk
> server threads and ublk_queues. This is possible now that these
> objects are decoupled
> - runs some I/O load from a single CPU
> - verifies that all the ublk server threads handle some I/O
>
> Before this changeset, this test fails, since I/O issued from one CPU is
> always handled by the one ublk server thread. After this changeset, the
> test passes.
>
> In the future, the last check above may be strengthened to "verify that
> all ublk server threads handle the same amount of I/O." However, this
> requires some adjustments/bugfixes to tag allocation, so this work is
> postponed to a followup.
>
> Signed-off-by: Uday Shankar <ushankar@purestorage.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Thanks,
Ming
next prev parent reply other threads:[~2025-05-29 9:48 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-27 23:01 [PATCH v7 0/8] ublk: decouple server threads from ublk_queues/hctxs Uday Shankar
2025-05-27 23:01 ` [PATCH v7 1/8] ublk: have a per-io daemon instead of a per-queue daemon Uday Shankar
2025-05-28 18:25 ` Caleb Sander Mateos
2025-05-29 9:59 ` Ming Lei
2025-05-29 15:37 ` Caleb Sander Mateos
2025-05-29 15:39 ` Caleb Sander Mateos
2025-05-27 23:01 ` [PATCH v7 2/8] selftests: ublk: kublk: plumb q_id in io_uring user_data Uday Shankar
2025-05-27 23:01 ` [PATCH v7 3/8] selftests: ublk: kublk: tie sqe allocation to io instead of queue Uday Shankar
2025-05-29 9:45 ` Ming Lei
2025-05-27 23:01 ` [PATCH v7 4/8] selftests: ublk: kublk: lift queue initialization out of thread Uday Shankar
2025-05-27 23:01 ` [PATCH v7 5/8] selftests: ublk: kublk: move per-thread data out of ublk_queue Uday Shankar
2025-05-27 23:01 ` [PATCH v7 6/8] selftests: ublk: kublk: decouple ublk_queues from ublk server threads Uday Shankar
2025-05-29 9:47 ` Ming Lei
2025-05-27 23:01 ` [PATCH v7 7/8] selftests: ublk: add test for per io daemons Uday Shankar
2025-05-29 9:47 ` Ming Lei [this message]
2025-05-27 23:01 ` [PATCH v7 8/8] Documentation: ublk: document UBLK_F_PER_IO_DAEMON Uday Shankar
2025-05-28 18:25 ` Caleb Sander Mateos
2025-05-29 9:48 ` Ming Lei
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