Questions tagged [io-uring]
37 questions
0
votes
1 answer
Cannot write file in Linux with liburing
I recently started using liburing and tried to write some demos. I met trouble when tried to write something into the disk.
Here is my code, the error check has been removed.
#include "liburing.h"
#include
#include
#include…
Amor Fati
- 337
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- 7
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0 answers
When using kernel-side polling, how the liburing and kernel avoid lost wakeup?
After go through the source code,
https://github.com/torvalds/linux/blob/ff1176468d368232b684f75e82563369208bc371/fs/io_uring.c#L6907
I am confuse about the wakeup when use kernel-side polling,
user-thread: A. update-tail, then B.…
Zhipeng Teng
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- 2
0
votes
2 answers
/usr/bin/ld: cannot find -lliburing
When compiled using
gcc liburing-test.c -o liburing-test -lliburing
flowing error is displayed
/usr/bin/ld: cannot find -lliburing
collect2: error: ld returned 1 exit status
Abhay Raj Singh
- 99
- 1
- 8
0
votes
0 answers
IORING_ENTER_SQ_WAKEUP - undefined reference to `io_uring_enter'
I'm trying to run some tests using IORING_SETUP_SQPOLL, but when it's set and I call io_uring_cqe_get_data(cqe); I get "cqe failed: Bad file descriptor". Reading about Kernel Side Polling in io_uring.pdf, it seems that I might have to call:
/* fills…
Alberto Pires
- 319
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0
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1 answer
How do I use IORING_OP_READ_FIXED?
On the following page https://lwn.net/Articles/810414/
IORING_OP_READ_FIXED
IORING_OP_WRITE_FIXED
These opcodes also submit I/O operations, but they use "registered" buffers that are already mapped into the kernel, reducing the amount of total…
Eric Stotch
- 141
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1 answer
Multiplexing with io_uring
I've recently written a simple TCP server using epoll, but I want to explore other mechanisms for high performance mutliplexing, to that end I came across io_uring, and am planning on making another simple TCP server using it.
However I read that…
warmtea
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