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Пишет LWN.net (![[info]](http://lj.rossia.org/img/syndicated.gif){kind=small} syn_lwnheadline)@ 2020-05-11 19:49:00 |
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Hussain: Lord of the io_uring
Shuveb Hussain has posted an extensive
introduction to io_uring, complete with examples and a reference guide.
"Because of the shared ring buffers between the kernel and user
space, io_uring can be a zero-copy system. Copying bytes around becomes
necessary when there are system calls that transfer data between kernel and
user space are involved. But since the bulk of the communication in
io_uring is via buffers shared between the kernel and user space, this huge
performance overhead is completely avoided."
Shuveb Hussain has posted an extensive
introduction to io_uring, complete with examples and a reference guide.
"Because of the shared ring buffers between the kernel and user
space, io_uring can be a zero-copy system. Copying bytes around becomes
necessary when there are system calls that transfer data between kernel and
user space are involved. But since the bulk of the communication in
io_uring is via buffers shared between the kernel and user space, this huge
performance overhead is completely avoided."
