From: Jens Axboe <axboe@kernel.dk>
To: io-uring@vger.kernel.org, Pavel Begunkov <asml.silence@gmail.com>
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH 1/1] io_uring/zcrx: implement large rx buffer support
Date: Sat, 24 Jan 2026 08:34:59 -0700 [thread overview]
Message-ID: <176926889954.811798.10308845596157999017.b4-ty@kernel.dk> (raw)
In-Reply-To: <a840a38936ddcaa4c03b81e66e571a38ca68694f.1769249792.git.asml.silence@gmail.com>
On Sat, 24 Jan 2026 10:36:17 +0000, Pavel Begunkov wrote:
> There are network cards that support receive buffers larger than 4K, and
> that can be vastly beneficial for performance, and benchmarks for this
> patch showed up to 30% CPU util improvement for 32K vs 4K buffers.
>
> Allows zcrx users to specify the size in struct
> io_uring_zcrx_ifq_reg::rx_buf_len. If set to zero, zcrx will use a
> default value. zcrx will check and fail if the memory backing the area
> can't be split into physically contiguous chunks of the required size.
> It's more restrictive as it only needs dma addresses to be contig, but
> that's beyond this series.
>
> [...]
Applied, thanks!
[1/1] io_uring/zcrx: implement large rx buffer support
commit: 795663b4d160ba652959f1a46381c5e8b1342a53
Best regards,
--
Jens Axboe
prev parent reply other threads:[~2026-01-24 15:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-24 10:36 [PATCH 0/1] io_uring: zcrx large buffers support Pavel Begunkov
2026-01-24 10:36 ` [PATCH 1/1] io_uring/zcrx: implement large rx buffer support Pavel Begunkov
2026-01-24 15:32 ` Jens Axboe
2026-01-24 16:31 ` Pavel Begunkov
2026-01-24 15:34 ` Jens Axboe [this message]
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