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Axboe: io_uring and networking in 2023
source link: https://lwn.net/Articles/923369/
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io_uring and networking in 2023 [LWN.net]
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Axboe: io_uring and networking in 2023
[Posted February 15, 2023 by corbet]
Jens Axboe has posted a
detailed guide to improving the performance of networking applications
with io_uring.
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Network applications have been written with a readiness type of model for decades, most commonly using epoll(2) these days to get notified when a given socket has data available. While these applications can be adapted to io_uring by swapping epoll notifiers with io_uring notifiers, going down that path does not lead to an outcome that fully takes advantage of what io_uring offers. It’ll potentially provide a reduction of system calls compared to epoll, but will not be able to take advantage of some of the other features that io_uring offers. To do that, a change to the IO event loop must be done.
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