From: Ming Lei <ming.lei@canonical.com> To: Christoph Hellwig <hch@infradead.org> Cc: Jens Axboe <axboe@kernel.dk>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@linux-foundation.org>, Dave Kleikamp <dave.kleikamp@oracle.com>, Zach Brown <zab@zabbo.net>, Benjamin LaHaise <bcrl@kvack.org>, Kent Overstreet <kmo@daterainc.com>, "open list:AIO" <linux-aio@kvack.org>, Linux FS Devel <linux-fsdevel@vger.kernel.org>, Dave Chinner <david@fromorbit.com> Subject: Re: [PATCH v1 0/9] block & aio: kernel aio and loop mq conversion Date: Fri, 15 Aug 2014 22:32:43 +0800 [thread overview] Message-ID: <CACVXFVPLW-36aJV83L-Jfcp8MfW+XtZObM=sN-_W0ZV5xznEbw@mail.gmail.com> (raw) In-Reply-To: <20140815131137.GA31079@infradead.org> On 8/15/14, Christoph Hellwig <hch@infradead.org> wrote: > On Fri, Aug 15, 2014 at 08:59:56PM +0800, Ming Lei wrote: >> Your concern is right, previous I thought that mq conversion wouldn't >> improve >> throughput, but I did ignore workqueue's concurrency management, it >> turns out blk-mq conversion can improvment throughput close to 10 times >> in >> my test(loop over virtio-blk which is backed by one image on SSD). It is >> like >> POSIX style AIO after mq conversion thanks to workqueue, and I need to >> update the performance data in V2. >> >> Actually kernel AIO needn't such high concurrency. > > Can you juse send a loop blk-mq conversion for now? I think that's OK. > a bit less controversial than the new kernel aio APIs, and keeping the > two separate is a good idea in general. Exactly, the two should be perfect pair for loop block, IMO. Thanks, -- Ming Lei
WARNING: multiple messages have this Message-ID (diff)
From: Ming Lei <ming.lei@canonical.com> To: Christoph Hellwig <hch@infradead.org> Cc: Jens Axboe <axboe@kernel.dk>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@linux-foundation.org>, Dave Kleikamp <dave.kleikamp@oracle.com>, Zach Brown <zab@zabbo.net>, Benjamin LaHaise <bcrl@kvack.org>, Kent Overstreet <kmo@daterainc.com>, "open list:AIO" <linux-aio@kvack.org>, Linux FS Devel <linux-fsdevel@vger.kernel.org>, Dave Chinner <david@fromorbit.com> Subject: Re: [PATCH v1 0/9] block & aio: kernel aio and loop mq conversion Date: Fri, 15 Aug 2014 22:32:43 +0800 [thread overview] Message-ID: <CACVXFVPLW-36aJV83L-Jfcp8MfW+XtZObM=sN-_W0ZV5xznEbw@mail.gmail.com> (raw) In-Reply-To: <20140815131137.GA31079@infradead.org> On 8/15/14, Christoph Hellwig <hch@infradead.org> wrote: > On Fri, Aug 15, 2014 at 08:59:56PM +0800, Ming Lei wrote: >> Your concern is right, previous I thought that mq conversion wouldn't >> improve >> throughput, but I did ignore workqueue's concurrency management, it >> turns out blk-mq conversion can improvment throughput close to 10 times >> in >> my test(loop over virtio-blk which is backed by one image on SSD). It is >> like >> POSIX style AIO after mq conversion thanks to workqueue, and I need to >> update the performance data in V2. >> >> Actually kernel AIO needn't such high concurrency. > > Can you juse send a loop blk-mq conversion for now? I think that's OK. > a bit less controversial than the new kernel aio APIs, and keeping the > two separate is a good idea in general. Exactly, the two should be perfect pair for loop block, IMO. Thanks, -- Ming Lei -- To unsubscribe, send a message with 'unsubscribe linux-aio' in the body to majordomo@kvack.org. For more info on Linux AIO, see: http://www.kvack.org/aio/ Don't email: <a href=mailto:"aart@kvack.org">aart@kvack.org</a>
next prev parent reply other threads:[~2014-08-15 14:32 UTC|newest] Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-08-14 15:50 [PATCH v1 0/9] block & aio: kernel aio and loop mq conversion Ming Lei 2014-08-14 15:50 ` Ming Lei 2014-08-14 15:50 ` [PATCH v1 1/9] aio: add aio_kernel_() interface Ming Lei 2014-08-14 15:50 ` Ming Lei 2014-08-14 18:07 ` Zach Brown 2014-08-14 18:07 ` Zach Brown 2014-08-15 13:20 ` Ming Lei 2014-08-15 13:20 ` Ming Lei 2014-08-14 15:50 ` [PATCH v1 2/9] fd/direct-io: introduce should_dirty for kernel aio Ming Lei 2014-08-14 15:50 ` Ming Lei 2014-08-14 15:50 ` [PATCH v1 3/9] blk-mq: export blk_mq_freeze_queue and blk_mq_unfreeze_queue Ming Lei 2014-08-14 15:50 ` Ming Lei 2014-08-14 15:50 ` [PATCH v1 4/9] blk-mq: introduce init_flush_rq_fn callback in 'blk_mq_ops' Ming Lei 2014-08-14 15:50 ` Ming Lei 2014-08-15 16:19 ` Jens Axboe 2014-08-15 16:19 ` Jens Axboe 2014-08-16 7:49 ` Ming Lei 2014-08-16 7:49 ` Ming Lei 2014-08-17 18:39 ` Jens Axboe 2014-08-17 18:39 ` Jens Axboe 2014-08-14 15:50 ` [PATCH v1 5/9] block: loop: convert to blk-mq Ming Lei 2014-08-14 15:50 ` Ming Lei 2014-08-15 16:31 ` Christoph Hellwig 2014-08-15 16:31 ` Christoph Hellwig 2014-08-15 16:36 ` Jens Axboe 2014-08-15 16:46 ` Jens Axboe 2014-08-16 8:06 ` Ming Lei 2014-08-16 8:06 ` Ming Lei 2014-08-17 17:48 ` Jens Axboe 2014-08-17 17:48 ` Jens Axboe 2014-08-18 1:22 ` Ming Lei 2014-08-18 1:22 ` Ming Lei 2014-08-18 11:53 ` Ming Lei 2014-08-18 11:53 ` Ming Lei 2014-08-19 20:50 ` Jens Axboe 2014-08-20 1:23 ` Ming Lei 2014-08-20 16:09 ` Jens Axboe 2014-08-21 2:54 ` Ming Lei 2014-08-21 2:58 ` Jens Axboe 2014-08-21 3:13 ` Ming Lei 2014-08-21 3:15 ` Ming Lei 2014-08-21 3:16 ` Jens Axboe 2014-08-21 3:34 ` Ming Lei 2014-08-21 5:44 ` Ming Lei 2014-08-27 16:08 ` Maxim Patlasov 2014-08-27 16:08 ` Maxim Patlasov 2014-08-27 16:29 ` Benjamin LaHaise 2014-08-27 16:29 ` Benjamin LaHaise 2014-08-27 17:19 ` Maxim Patlasov 2014-08-27 17:19 ` Maxim Patlasov 2014-08-27 17:56 ` Zach Brown 2014-08-27 17:56 ` Zach Brown 2014-08-28 2:10 ` Ming Lei 2014-08-28 2:10 ` Ming Lei 2014-08-28 2:06 ` Ming Lei 2014-08-28 2:06 ` Ming Lei 2014-08-29 11:14 ` Maxim Patlasov 2014-08-29 11:14 ` Maxim Patlasov 2014-08-14 15:50 ` [PATCH v1 6/9] block: loop: say goodby to bio Ming Lei 2014-08-14 15:50 ` Ming Lei 2014-08-14 15:50 ` [PATCH v1 7/9] block: loop: introduce lo_discard() and lo_req_flush() Ming Lei 2014-08-14 15:50 ` Ming Lei 2014-08-14 15:50 ` [PATCH v1 8/9] block: loop: don't handle REQ_FUA explicitly Ming Lei 2014-08-14 15:50 ` Ming Lei 2014-08-14 15:50 ` [PATCH v1 9/9] block: loop: support to submit I/O via kernel aio based Ming Lei 2014-08-14 15:50 ` Ming Lei 2014-08-14 16:53 ` [PATCH v1 0/9] block & aio: kernel aio and loop mq conversion Jens Axboe 2014-08-14 16:53 ` Jens Axboe 2014-08-15 12:59 ` Ming Lei 2014-08-15 12:59 ` Ming Lei 2014-08-15 13:11 ` Christoph Hellwig 2014-08-15 13:11 ` Christoph Hellwig 2014-08-15 14:32 ` Ming Lei [this message] 2014-08-15 14:32 ` Ming Lei
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