From: Jens Axboe <axboe@kernel.dk>
To: linux-block@vger.kernel.org, Ming Lei <ming.lei@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>, Jooyung Han <jooyung@google.com>,
Mike Snitzer <snitzer@kernel.org>,
zkabelac@redhat.com, dm-devel@lists.linux.dev,
Alasdair Kergon <agk@redhat.com>,
Mikulas Patocka <mpatocka@redhat.com>
Subject: Re: [PATCH V3 0/5] loop: improve loop aio perf by IOCB_NOWAIT
Date: Sat, 22 Mar 2025 11:40:06 -0600 [thread overview]
Message-ID: <174266520675.800027.959344570613955585.b4-ty@kernel.dk> (raw)
In-Reply-To: <20250322012617.354222-1-ming.lei@redhat.com>
On Sat, 22 Mar 2025 09:26:09 +0800, Ming Lei wrote:
> This patchset improves loop aio perf by using IOCB_NOWAIT for avoiding to queue aio
> command to workqueue context, meantime refactor lo_rw_aio() a bit.
>
> In my test VM, loop disk perf becomes very close to perf of the backing block
> device(nvme/mq virtio-scsi).
>
> And Mikulas verified that this way can improve 12jobs sequential rw io by
> ~5X, and basically solve the reported problem together with loop MQ change.
>
> [...]
Applied, thanks!
[1/5] loop: simplify do_req_filebacked()
commit: 04dcb8a909b5b68464ec5ccb123e9614f3ac333d
[2/5] loop: cleanup lo_rw_aio()
commit: 832c9fec8e2314170c5451023565b94f05477aa7
[3/5] loop: move command blkcg/memcg initialization into loop_queue_work
commit: a23d34a31758000b2b158288226bf24f96d8864d
[4/5] loop: try to handle loop aio command via NOWAIT IO first
commit: dfc77a934a3acdb13dadf237b7417c6a31b19da8
[5/5] loop: add hint for handling aio via IOCB_NOWAIT
commit: 4c3f4bad7a6e9022489a9f8392f7147ed3ce74b1
Best regards,
--
Jens Axboe
next prev parent reply other threads:[~2025-03-22 17:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-22 1:26 [PATCH V3 0/5] loop: improve loop aio perf by IOCB_NOWAIT Ming Lei
2025-03-22 1:26 ` [PATCH V3 1/5] loop: simplify do_req_filebacked() Ming Lei
2025-03-22 1:26 ` [PATCH V3 2/5] loop: cleanup lo_rw_aio() Ming Lei
2025-03-22 1:26 ` [PATCH V3 3/5] loop: move command blkcg/memcg initialization into loop_queue_work Ming Lei
2025-03-22 1:26 ` [PATCH V3 4/5] loop: try to handle loop aio command via NOWAIT IO first Ming Lei
2025-03-22 1:26 ` [PATCH V3 5/5] loop: add hint for handling aio via IOCB_NOWAIT Ming Lei
2025-03-22 17:40 ` Jens Axboe [this message]
2025-03-24 14:50 ` [PATCH V3 0/5] loop: improve loop aio perf by IOCB_NOWAIT Jens Axboe
2025-03-25 1:59 ` Ming Lei
2025-03-25 12:07 ` Jens Axboe
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