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From: Christoph Hellwig <hch@infradead.org>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Subject: Re: [PATCH 5/6] io_uring: utilize the io batching infrastructure for more efficient polled IO
Date: Mon, 18 Oct 2021 03:20:34 -0700	[thread overview]
Message-ID: <YW1KchZqw+a2s+4N@infradead.org> (raw)
In-Reply-To: <20211017020623.77815-6-axboe@kernel.dk>

On Sat, Oct 16, 2021 at 08:06:22PM -0600, Jens Axboe wrote:
> Wire up using an io_comp_batch for f_op->iopoll(). If the lower stack
> supports it, we can handle high rates of polled IO more efficiently.
> 
> This raises the single core efficiency on my system from ~6.1M IOPS to
> ~6.6M IOPS running a random read workload at depth 128 on two gen2
> Optane drives.
> 
> Signed-off-by: Jens Axboe <axboe@kernel.dk>

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>

  reply	other threads:[~2021-10-18 10:20 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-17  2:06 [PATCHSET v3] Batched completions Jens Axboe
2021-10-17  2:06 ` [PATCH 1/6] block: add a struct io_comp_batch argument to fops->iopoll() Jens Axboe
2021-10-18 10:16   ` Christoph Hellwig
2021-10-17  2:06 ` [PATCH 2/6] sbitmap: add helper to clear a batch of tags Jens Axboe
2021-10-17  2:06 ` [PATCH 3/6] block: add support for blk_mq_end_request_batch() Jens Axboe
2021-10-18 10:18   ` Christoph Hellwig
2021-10-18 13:40     ` Jens Axboe
2021-10-17  2:06 ` [PATCH 4/6] nvme: add support for batched completion of polled IO Jens Axboe
2021-10-18 10:20   ` Christoph Hellwig
2021-10-17  2:06 ` [PATCH 5/6] io_uring: utilize the io batching infrastructure for more efficient " Jens Axboe
2021-10-18 10:20   ` Christoph Hellwig [this message]
2021-10-17  2:06 ` [PATCH 6/6] nvme: wire up completion batching for the IRQ path Jens Axboe
2021-10-18 10:22   ` Christoph Hellwig
2021-10-18 13:41     ` Jens Axboe
2021-10-18 15:14       ` Christoph Hellwig
2021-10-18 15:25         ` Jens Axboe
2021-10-20 11:14 ` [PATCHSET v3] Batched completions John Garry
2021-10-20 14:02   ` Jens Axboe

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