linux-kernel - Re: [PATCH for-next v3 0/3] implement pcpu bio caching for IRQ I/O

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Message-Id: <166672693299.6037.1642967404693492462.b4-ty@kernel.dk>
Date:   Tue, 25 Oct 2022 13:42:12 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Pavel Begunkov <asml.silence@...il.com>,
        linux-block@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>,
        io-uring@...r.kernel.org
Subject: Re: [PATCH for-next v3 0/3] implement pcpu bio caching for IRQ I/O

On Fri, 21 Oct 2022 11:34:04 +0100, Pavel Begunkov wrote:
> Add bio pcpu caching for normal / IRQ-driven I/O extending REQ_ALLOC_CACHE,
> which was limited to iopoll. t/io_uring with an Optane SSD setup showed +7%
> for batches of 32 requests and +4.3% for batches of 8.
> 
> IRQ, 128/32/32, cache off
> IOPS=59.08M, BW=28.84GiB/s, IOS/call=31/31
> IOPS=59.30M, BW=28.96GiB/s, IOS/call=32/32
> IOPS=59.97M, BW=29.28GiB/s, IOS/call=31/31
> IOPS=59.92M, BW=29.26GiB/s, IOS/call=32/32
> IOPS=59.81M, BW=29.20GiB/s, IOS/call=32/31
> 
> [...]

Applied, thanks!

[1/3] bio: split pcpu cache part of bio_put into a helper
      commit: 0b0735a8c24f006d2d9d8b2b408b8c90f3163abd
[2/3] block/bio: add pcpu caching for non-polling bio_put
      commit: 13a184e269656994180e8c64ff56db03ed737902
[3/3] io_uring/rw: enable bio caches for IRQ rw
      commit: 93dad04746ea1340dec267f0e98ac42e8bc67160

Best regards,
-- 
Jens Axboe