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Sat, 14 Mar 2026 10:09:42 -0700 (PDT) Message-ID: <0c0806d0-3fe1-4602-abe1-921b0ba0a853@kernel.dk> Date: Sat, 14 Mar 2026 11:09:41 -0600 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH 0/2] io_uring: add IPC channel infrastructure From: Jens Axboe To: Daniel Hodges , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260313130739.23265-1-git@danielhodges.dev> <20260314135053.3334-1-git@danielhodges.dev> <873d56d8-6c1c-447f-ae70-870417c6de5a@kernel.dk> Content-Language: en-US In-Reply-To: <873d56d8-6c1c-447f-ae70-870417c6de5a@kernel.dk> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 3/14/26 10:54 AM, Jens Axboe wrote: > On 3/14/26 7:50 AM, Daniel Hodges wrote: >> On Thu, Mar 13, 2026 at 01:07:37PM +0000, Daniel Hodges wrote: >>> Performance (virtme-ng VM, single-socket, msg_size sweep 64B-32KB): >>> >>> Point-to-point latency (64B-32KB messages): >>> io_uring unicast: 597-3,185 ns/msg (within 1.5-2.5x of pipe for small msgs) >> >> Benchmark sources used to generate the numbers in the cover letter: >> >> io_uring IPC modes (broadcast, multicast, unicast): >> https://gist.github.com/hodgesds/fbcd8bb8497bc0ec2bf1f95244a984fe#file-io_uring_ipc_bench-c >> >> IPC comparison (pipes, unix sockets, shm+eventfd): >> https://gist.github.com/hodgesds/fbcd8bb8497bc0ec2bf1f95244a984fe#file-ipc_comparison_bench-c > > Thanks for sending these, was going to ask you about them. I'll take a > look at your patches Monday. Just a side note since I peeked at a bit - this is using the raw interface? But more importantly, you'd definitely want IORING_SETUP_DEFER_TASKRUN and IORING_SETUP_SINGLE_ISSUER set in those init flags. -- Jens Axboe