Re: [RFC PATCH 0/2] io_uring: add IPC channel infrastructure

[Jens Axboe]

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